----------_..
Ladd's Addition
Conservation District
Guidelines
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Acknowledgements
Contact Agencies
The guidelines were written by a subco=ittee of the Ladd's Addi-
tion Conservation District Advisory Council, composed of George
Eighmey, Judith Rees, Richard Ross, James Hamrick, Lawretta
Morris, and John Southgate. This handbook was prepared for the
Historic Landmarks Program by Judith Rees and Fred Merchant
with special assistance from the following individuals:
Richard Bellinger - Layout, Graphics & Maps
Barbara Macomber - Cover illustration, Tilley House (1911)
David Yamashita - Tree Sketches, pages 6 & 7
Ladd's Addition Conservation District Advisory Council:
Call 823-7700 for the telephone number of the current chairperson.
For information on Design Review and Special Events:
walking tours, siding removal projects
Portland Historical Landmarks Commission: 823-7700
For information on Design Review and Building Permits
Urban Forestry Commission: 823-4489
For information on trees: pruning, spraying, removal,
and planting
Portland Development Commission: 823-5300
For information on low interest rehabilitation loans for
single-family and multi-family residences
Oregon State Historic Preservation Office: 378-5001 (Salem)
For information on state and federal tax incentives:
special assessment for historic properties and federal
investment tax credit
Historic Preservation League of Oregon: 243-1923
For information on federal tax incentives: preservation
easements
Copies of this booklet are available from the Bureau of Planning,
City of Portland, 1120 SW Fifth Avenue, Portland, Oregon 97204
Portland
Historical Landmarks
Commission
George Sheldon, Chairman
Deborah Novack
Chet Orloff
Sharr Prohaska
Richard Ritz
Susan Seyl
John Warner
Ladd's Addition
District
Advisory Council
Fred Merchant, Chairman
James Hamrick
Carol McIntosh
Deborah Novack
David Yamashita
Bureau of Planning
John Southgate, Landmarks
Commission Staff
Adopted by the
Landmarks Commission:
February 26, 1986
Adopted by the City Council:
February 10, 1988
Ladd's Addition
Conservation District
Guidelines

CITY OF
BUREAU OF PlANNING
PORTLAND, OREGON
Gretchen Kafoury, Commissioner
Robert E. Stacey, Jr., Director
1120 SOW 5th, Room 1002
Portland, Oregon 97204·1966
,Telephone: (503)-796-'7100-,
~. -FAX:·(503).:Z96-3156·~---------------------------1 ~;.:. ~ '.4"~~? ~"n''', i ,.: l>:fQic ~L;f~ ~k.;..;;.'..&.:..~~~
Telephone (503) 623·7700
FAX: (503) 823-7800
ADDENDUM TO DESIGN GUIDELINES:
DESIGN DISTRICT THRESHOLDS
Section 33.825.030 of the Portland Zoning Code outlines the procedures for Major and
Minor Design Review. Major Design Reviews are processed through the Type ill
procedure, which requires a public hearing. Minor Design Reviews are processed
through the Type IT procedure; they are approved by staff based on specific criteria. A
hearing is held if the decision is appealed.
The level of Design Review is determined by the type of development, the value of the
improvements, or the location of the project. There are three threshold levels for use
throughout the City:
Threshold 1: New buildings over 1,000 square feet in area or exterior alterations
valued over $200,000 (in 1990 dollars) require Major Design Review.
Smaller projects require Minor Design Review.
Threshold 2: New development or exterior alterations, valued over $1,000,000 (in
1990 dollars), require Major Design Review. Smaller projects require
Minor Design Review.
Threshold 3: New, primary buildings require Major Design Review. New accessory
buildings and expansions of existing primary buildings require Minor
Design Review. Other projects do not require Design Review.
The thresholds are also applied to the Special District Design Zones, so designated for
their particular character or historic value. In these cases, all projects within the Design
Zone are subject to the thresholds as follows:
Districts assigned to Threshold 1:
• Downtown Design District
• Skidmore/Old Town Historic Design Subdistrict
• Yamhill Historic Design Subdistrict
• NW 13th Street Historic Design Subdistrict
• The blocks zoned CX in the NW Triangle Plan area which abut the North
Park Blocks
City Government Information TOO (for Hearing [, Speech Impaired): (503) 796-6868
Districts assigned to Threshold 2:
• Macadam Design District
• All areas in the Central City Plan District subject to design review that are not
covered by Threshold 1
• All areas outside the Central City Plan District with a CXd or EXd designation
Districts assigned to Threshold 3:
• Lair Hill Design District
• Ladd's Addition Design District
Special Terwilliger Blvd. Design District Thresholds:
Major Design Review:
• New development that would be visible from Terwilliger Blvd., except for
houses.
Minor Design Review:
• New houses visible from Terwilliger Blvd.
• Alterations to existing development that is visible from Terwilliger Blvd.
Exempt from Design Review:
• New development that will not be visible from Terwilliger Blvd.
• Alterations to existing development that will not be visible from
Terwilliger Blvd.
The Planning Permit Center staff can answer any questions about the design review
process or the assigned thresholds. The telephone number is 823-7526.
9/25/92
CONTENTS
APPENDICES
LIST OF MAPS
INTRODUCTION 1
COMMUNITY DESIGN GUlDELINES 2
Street System Guidelines 3
Open Space Guidelines 6
NEW CONSTRUCTION GUIDELINES 8
EXTERIOR REHABILITATION GUIDELINES 12
APPENDIX A 17
Information on the National Register ofHistoric Places
APPENDIX B 18
National Register Historic District Classification Map
APPENDIX C 19
Secretary ofthe Interior's Standards for Rehabilitation
APPENDIX D 20
Examples ofInappropriate Changes
LOCATION MAP 1
STREET SYSTEM MAP 4
STREET TREE PLAN MAP 7
NATIONAL REGISTER HISTORIC DISTRICT
CLASSIFICATION MAP 18

INTRODUCTION
LOCATION MAP
A conservation district is a special designation for areas where the
conservation of an historic built environment is the declared City
policy and the desire of district residents and owners. The conser-
vation district designation is intended to provide the City and
district residents with control over those architectural and commu-
nity features which are essential to the preservation of the district
character. Conservation district administration is shared by the
Portland Historical Landmarks Commission and a District Advi-
sory Council, composed of district residents. The Advisory Council
is appointed by the Landmarks Commission, with City Council
ratification.
Fonnal Landmarks Commission review and District Advisory Council
recommendations are required for all new construction, demolition,
signs, redevelopment and neighborhood improvement projects of the
City. Although review of exterior rehabilitation is not required by the
Conservation District ordinance, owners of older buildings are urged
to follow the Secretary of Interior's Standards for Rehabilitation and to
consult informally with the Advisory Council.
To protect the historic character of Ladd's Addition, the City has
adopted guidelines and criteria for development and preservation,
which apply to both private and public actions. The District
Guidelines are intended to maintain and enhance those qualities which
make Ladd's Addition a unique historic neighborhood. These
qualities include:
• the community plan with its radial street system and service alleys
• street trees and fonnal gardens
• diverse collection of early 20th century homes, businesses and
churches.
The District Guidelines promote the continued integrity and identity
of Ladd's Addition in three broad areas:
• Community Design
• New Construction
• Exterior Rehabilitation
The preface to each set of guidelines identifies the historic qualities
that specific guidelines seek to preserve. The guidelines are not
intended to be strict, inflexible standards; rather they serve to direct
development in a manner which best complements the special
qualities of Ladd's Addition.
Ladd·s Additwn Conservation District Guidelines 1
2COMlVIUNITY DESIGN GUIDELINES
The Community Design Guidelines are intended to guide the City,
district residents and property owners in actions which may affect the
preservation of important community qualities, including street
systems and open space.
Aerial view of Ladd's Addition, looking northeast, circa 1920.
Oregon Historical Society, ORH139917
STREET SYSTEM
GUIDELINES
Ladd's Addition is Portland's oldest planned community (1891) and
one of the oldest in the western United States. Ladd's radial street
plan marked a dramatic break in Portland's typical grid street pattern.
With a formal symmetry echoing Renaissance cities and gardens, the
radial streets converge at five formal gardens, which are the
showpieces of the community. Parking strips are lined with mature
street trees, green archways of elms and maples. Service alleys
complement the community plan by keeping parking and utilities
behind homes and businesses.
The Addition's unique radial street plan is arranged in a hierarchy
from two broad central boulevards, Ladd and Elliott, to narrower
minor streets and service alleys, all with a central focus on Ladd
Circle. Throughout the district, original street and sidewalk details
reinforce the area's historic character. Most sidewalk comers are
imprinted with the original date of construction and street names.
Horse tethering rings line most curb fronts. Metal curb protectors for
buggy wheels are still found on many street and alley comers.
Through traffic has been a chronic threat to livability in the district for
over sixty years. The City's Arterial Streets Classification Policy for
Ladd's Addition states: "Non-local traffic should be routed around
rather than through Ladd's Addition on the appropriately classified
streets."
,
\
\
\
Ladd's Addition Conservation District Guidelines 3
Street System Guidelines
1. TRAFFIC CONTROL: The city should employ specific controls
to reduce traffic volume and speed on district streets. New
construction should be designed so as to minimize traffic impacts
on district streets.
2. STREET FUNCTIONS: Perimeter streets (Division, Hawthorne,
and the 11th and 12th Avenue couplet) should serve through
traffic. Ladd and Elliott were designed as primary "boulevards"
to collect and distribute local Ladd's Addition traffic. All other
streets within the district were designed to provide access to
abutting properties.
3. SERVICE ALLEYS: Service alleys should provide primary routes
for underground and overhead utilities, and access to parking,
garages and garbage collection. Where alley routes exist,
overhead utilities should not be routed above streets. Existing
overhead utilities which cross streets, parks or parking strips
should be consolidated and rerouted down alleys, placed
underground or removed. Alley safety should be enhanced by
lighting and visibility from abutting buildings. Alleys should be
posted for "No Through Traffic."
4. VEHICULAR AND PARKING ACCESS: Access to off-street
parking should be via service alleys. Off-street parking should
be located in the rear yard or beneath/within buildings. Off-
street parking should be visually screened from adjacent
residences and streets by sight obscuring plants and fences. No
lot within the district should be used solely for parking.
LEGEND
WiX£,T Major City Traffic Street - ASCF«
':N' ;£,: District Collector Street - ASCF«
,;i' x' Neighborlwod Collector Street -ASCF«
Local Service Street - ASCF«
Service Alley
* This classiflCation is referenced in tke Arterial
Streets Classification Policy for the City of
Portland" adopted by City Council, June 30,
1977 and updated Oct. 27, 1983
4 Ladd's Addition Conservation District Guidelines
Sidewalk stamped with
contractor's name and date.
Horse ring.
Water meter cover.
Street System Guidelines
5. SIDEWALK HISTORY: These guidelines were adopted by the
Portland City Council, Resolution No. 33683, on May 16, 1984, as
amended.
a. When repairs are made in the vicinity of stamped sidewalk
details and/or their stones, all intact details (including those
with minor hairline cracks or flaws) should be preserved: street
names, park names, dates and contractor names. This may
necessitate the use of concrete saws and/or additional
handwork.
b. Wheelchair ramps should be located to avoid stamped details at
sidewalk intersections, whenever possible.
c. When a stone with details is badly damaged or hazardous (as
defined in the Public Improvement City Code, Section
17.28.020) and the details are intact, the original dates, streets
and park names should be removed and reset in new concrete.
Contractors names should be reset, when possible.
d. When stamped sidewalk details are damaged beyond repair or
resetting (e.g. major cracks, raised or missing pieces), the
sidewalk stone should be replaced and restamped with all
original street and park names, and both the original and
current date (year). Contractors' names should be restamped,
when possible.
e. When curb repairs are made, original horse rings should be
reset in place. When original rings are badly damaged or
missing, they should be replaced at their original spacing. Ring
replacement will be limited to the supply available to the
Bureau of Maintenance.
f. The Sidewalk Repair Department of the Bureau of Maintenance
will log all corner repairs made in Ladd's Addition following
the adoption of these guidelines. This log of repairs will be
available to the Ladd's Addition Conservation District Advisory
Council upon request.
6. STREET LIGHTS AND STANDARDS: Existing wooden street
light standards within the district should eventually be replaced
with traditional early 20th century style standards.
7. PUBLIC UTILITY FEATURES: Original public utility features,
such as water meter covers, manhole covers and hydrants should
be retained, unless replacement is warranted for public health and
safety.
8. HISTORIC PLAQUES AND SIGNS: Standardized historic plaques
and signs marking buildings, streets or the district itself are
encouraged and should be consistent in design with City and
Federal standards for historic places. Note: As of June 1990, a
standardized plaque had not been designed.
Ladd's Addition Conservation District Guidelines 5
OPEN SPACE
GUIDELINES
Western Rose Garden
Looking north on Ladd Avenue
toward Ladd Circle
Ladd's Addition's parks and open spaces work together with the
radial street plan to create the district's special historic character. The
parks were designed and planted in 1909-10. At the same time,
continuous rows of street trees were planted on parking strips
throughout the district. Although there has been a gradual loss of
some original street trees, the remaining rows of mature American
Elms and Norway Maples are a unique natural treasure and a
significant part of the district's character. The Addition's streetscapes
are characterized by large trees, broad unbroken parking strips, deep
setbacks and open front yards.
1. PARK SYSTEM DESIGN AND PLANTINGS: The historic formal
garden design and plantings in Ladd Circle and the rose gardens
should be maintained and restored.
2. PARK USE: Ladd Circle is a formal garden and a central "village
green," suitable for passive recreation and community gatherings.
The rose gardens are formal gardens, suitable primarily for
walking and flower appreciation. Pedestrian movement and
safety should take priority over vehicle movement in the vicinity
of Ladd Circle and the rose gardens.
3. ABERNETHY COMMUNITY SCHOOL GROUNDS: The
Abernethy Community School grounds and facilities should be
improved and maintained to provide a wide range of active
recreational activities for district residents of all ages.
4. PRIVATE OPEN SPACE, FRONT YARDS: Front and side yards
which abut a street should be visually open to the street. Hedges,
retaining walls and fences which visually obscure front yards are
discouraged. Fences should be kept behind the building lines, as
viewed from the street. Original grade should be retained; berms
and excavations are discouraged.
5. USE OF PARKING STRIPS: Parking strips should be planted with
designated street trees and grass. Hedges, shrubs, ground covers,
mulches and unapproved street trees are not recommended in
parking strips. Overhead utility lines should not extend over
parking strips, as such lines conflict with tree growth and the
district's visual quality. Parking strips are not to be used for
parking areas or for street and sidewalk widening.
't'1: '
American Elm Norway Liltle Leaf
Maple Linden
6 Ladd's Addition Conservation District Guidelines
European
White Birch
Globe
Locust
Single Seed
Hawthorne
Scanlon
Red Maple
Golden
Desert Ash
Open Space Guidelines
Unpruned Properly
Pruned
6. STREET TREE CONSERVATION, REMOVAL AND
MAINTENANCE: All prudent measures should be taken by the
City, utility companies and property owners to preserve original
street trees, especially the American Elms and Norway Maples.
The Street Tree Division will notify the Advisory Council of
requests for removal permits. Removal is warranted only when an
imminent danger to the public exists. Sidewalk repairs and other
excavation or construction near trees should avoid cutting tree
roots.
Sheared Pollarded
The City is responsible for disease prevention and tree spraying.
The City Code makes normal maintenance and pruning the
obligation of property owners. Pruning practices should respect
natural growth habits; topping, shearing and pollarding of street
trees is strongly discouraged. Permits from the Street Tree Division
are required for the planting, removing, or pruning of all trees
except those on private property. Street trees are on public
property.
7. STREET TREE REPLANTING: On all frontages, replanting of
missing street trees should be done in accordance with the Ladd's
Addition Street Tree Plan. Replanting is required in obtaining tree
removal permits.
8. STREET TREE PLAN: A Street Tree Plan adopted by the City for
Ladd's Addition governs street tree selection and replacement on
each street. Species designated in the plan should be consistent
with the character, height, canopy and spacing of a street's original
plantings, the width of the parking strip, and the scale and function
of the street within the district.STREET TREE PLAN MAP _
LEGEND
•• f • ,~ '~
. .
, .
';'" I,f "., . .I I ~', , .
Flowering Chanticleer Profusion Tilford
Plum Pear Crabapple Red Maple
[
[
[
... Gold/lfl DesertA~~~--~"""-"-'-""r
. II II 11111111 n I"""li.
American Elm J'
£
Norway Maple Jf
Other species J
•
as labeled J~
Jl~'!!~~P
l
J~J~
-
-
Ladd's Addition Conservation District Guidelines 7
Ladd Circle store under construction in 1923.
Oregon Historical Society, ORHI68576
Typical relation ofresidell
EXAMPLES OF RESIDENTIAL BUIWING STYLES FOUND IN
LADD'S ADDITION
20th
Century
English
Cottage
20th
Century
Tudor
Revival
20th
Century
Colonial
" Revival
20th
Century
Mission
Revival
Bungalow
Craftsman
Craftsman
FourSquare
American
FourSquare
Typical relation ofCOm1)1.€l
8 Ladd's Addition Conservation District Guidelines
Juilding to street.
building to street.
Ladd's Addition, a residential real estate development, was primarily
developed in the 25 year span between 1905 and 1930. Although the
individual structures from this period represent a variety of styles,
including Bungalow, Mission, Tudor, and Colonial Revi val, they have
a continuity of materials, scale, detailing, orientation and setback
which creates a uniformity. Structures remaining from this era form
the basis of the architectural character of the neighborhood and their
features express an "architectural vocabulary" which can be used in
designing new buildings which will be compatible within the district.
The guidelines are intended to insure maximum compatibility of new
buildings with historic buildings, not to build "new old buildings" or
exact duplicates of older styles. New Construction Guidelines apply
to all new detached structures and to building additions which require
a foundation.
1. SITING: All new buildings should face the street. Commercial
buildings should be pedestrian oriented and have a zero front
yard setback. All other buildings should maintain the historical
front yard setback on the block, usually fifteen to twenty feet. The
original topography and grade of building sites should be
maintained.
2. LANDSCAPING: On the site of non-commercial structures, the
retention of front lawns and mature trees is encouraged. The
predominant use of ground covers, such as bark mulch and
broadleaf evergreens, is discouraged. Plants popular in the 1910's
and 1920's are encouraged.
3. FENCES AND RETAINING WALLS: Front and side yards which
abut a street should be visually open to the street. Hedges,
retaining walls and fences which visually obscure front yards are
discouraged. Fences should be kept behind the building lines, as
viewed from the street.
4. PARKING: Parking areas and driveways are discouraged in the
front yard. Required on-site parking should be located in the rear
yard or beneath new construction. Parking areas, providing space
for three or more cars, should be screened from adjacent
properties: hedges and canopy trees are recommended as screens.
No lot within the district should be converted solely for parking
use.
5. BUILDING HEIGHT: In areas zoned for single family residential
use, new buildings should not be less than one and one-half stories
or more than two and one-half stories or thirty five feet in height.
In all other areas, new buildings should not exceed three stories or
forty five feet in height.
6. BUILDING FACADE PROPORTIONS: The front facades of non-
commercial buildings should be vertical, i.e., higher than they are
wide.
Ladd's Addition Conservation District Guidelines 9
New Construction Guidelines
7. FOUNDATIONS: Non-commercial structures should have
foundations which are three or four feet in height and constructed
of masonry materials, such as ornamental concrete block, poured
concrete with a stucco wash, or stone. Commercial buildings
should have foundations which are within six inches of the
sidewalk elevation.
8. EXTERIOR SIDING MATERIALS: Materials used on new
buildings should be consistent with predominant materials used
on buildings of a similar use within the district. On single family
residences and duplexes: stucco, horizontal wood siding, wood
shingles, brick, or a combination of these materials. On
commercial and multi-family residences: stucco or brick. The
following materials are discouraged: plywood, used brick, shakes,
exposed concrete block and metal.
HORIZONTAL WOOD SIDING WOOD SHINGLE
Lapped Clapboard False
bevel
Shiplap Tongue-and-
joint groove joint
Coursed
9. ROOF FORM: Non-commercial buildings should have gable or
hip roofs with medium to steep pitch. Dormers and gable roofed
projections are encouraged. Commercial buildings should have
flat roofs with parapets or false fronts. Detailing of the parapets
with cornices and stepping is encouraged.
10. BUILDING ADDITIONS: Building additions should be in keeping
with the original architectural character, color, mass, scale, and
materials. Additions should be designed to have the least impact
upon character-defining features and should be located
inconspicuously when viewed from the street.
11. DEVELOPMENT IMPACTS: All new development should be
designed and operated to minimize potential adverse impacts
upon surrounding residences and to reduce conflicts with
residential uses. Factors to be considered are traffic generation,
deliveries, parking, noise, lighting, crime prevention, hours of
operation and activity, visual effects and buffering.
12. FRONT FACADE DETAILING: Primary entrances to buildings
should be oriented to the street rather than to a rear yard or
interior side yard. Front porches and projecting features such as
balconies, bays and dormer windows are encouraged. Blank
facades with no windows are discouraged.
10 Ladd's Addition Conservation District Guidelines
Example ofmodern neon sign.
New Construction Guidelines
13. WINDOWS AND DOORS: Window sashes and doors should be
wood frame and detailed with wood trim. For commercial
buildings, storefront windows with large fixed panes below and
smaller panes above are encouraged. For other buildings, vertical,
double-hung windows, as well as groups of vertical windows
which may be horizontal in overall expression, are encouraged.
-=
[j a a ~ ~~=--=-
Fixed Double- or Casement Hopper Awning
single-hung
14. AWNINGS: On commercial structures, retractable fabric awnings
which are architecturally compatible with historic commercial
structures are encouraged. Awnings should fit within window
bays.
15. COLOR: Earth tones and muted colors which are derived from
natural materials, such as stone, brick and soil are encouraged.
Use of bright colors is discouraged.
16. SIGNS: For commercial buildings, freestanding signs are
discouraged; wall signs, window signs, canopy and projecting
signs attached to the building are encouraged. Sign materials
appropriate to the 1910's and 1920's, such as painted wood and
neon are encouraged. Plastic sign faces are discouraged. Signs
should not be the dominant feature of a building or site.
17. CRIME PREVENTION: Crime prevention elements should be
included in the design with specific attention to landscaping,
parking areas, walkways, lighting, entries, and visibility.
Windows and entries should not be obscured. Parking areas,
walkways, and entries should be adequately illuminated for
visibility.
The 7-11 store at BE 20th Auenue and BE Elliott Auenue, constructed in 1985,
garnered a preservation award to the neighborhood and the store owner.
£add's Addition Conservation District Guidelines 11
EXTERIOR REHABILITATION GUIDELINES
Preservation in action, tuck pointing ofa chimney.
EXAMPLE OF INAPPROPRIATE EXTERIOR CHANGES
_ Donahoe House, 1628 SE LaddAvenue, c. 1915.
Oregon Historical Society, ORHI80866
12 Ladd's Addition Conservation District Guidelines
Same structure in 1989
Ladd neighbors assist in
removing asbestos siding, an
annual Historic Preservation
Week project.
The architectural character of Ladd's Addition was established in the
three decades following the turn of the century. The vast majority of
district residences, churches, and commercial buildings built prior to
1930, contribute to a consistent early 20th Century neighborhood
character. New construction is rare, since few vacant or redevelopable
properties exist.
In recent years there has been widespread rehabilitation of older
residences. Although this activity is essential to maintaining the
district's vitality, exterior rehabilitation can unknowingly alter or
remove abuilding's original architectural features. Original building
facades, siding, porches, columns, windows and other architectural
features have, in many cases, been changed by inappropriate
rehabilitation, and the building's compatibility with its neighbors and
the district is diminished. Each loss or change of original architectural
features inevitably erodes the historic integrity and property values of
the district. Where original features have been removed, their
restoration is encouraged whenever they can be documented through
plans, photographs, or other means.
To protect the character of Ladd's Addition, exterior rehabilitation
should conform to the following guidelines and the Secretary of
Interior's Standards for Rehabilitation. The Secretary of Interior's
Standards are a nationally recognized set of guidelines for historic
buildings and buildings within historic districts (APPENDIX C).
Exterior rehabilitation plans are not subject to formal review by the
Landmarks Commission and Advisory Council. However, property
owners are urged to informally review their plans for exterior
rehabilitation with the Advisory Cound!.
1. FACADES ORIENTED TO A STREET: In rehabilitating existing
buildings, the architectural integrity of street-oriented facades
should be maintained. Additions and structural alterations should
be limited to the rear and side yard facades and be minimally
visible from the street.
2. FOUNDATIONS: Changes to the foundation should match or be
compatible with the original foundation in height and materials.
3. EXTERIOR SIDING MATERIAL: Restoration and maintenance of
original siding materials is encouraged. Materials used on
additions should match or be compatible with the predominant
materials used on the original structure. Most single family
residences and duplexes in Ladd's Addition feature stucco,
horizontal wood siding, wood shingles, brick or a combination of
these materials. Most cornrnerdal and multi-family structures
feature stucco or brick. The following materials are discouraged:
plywood, used brick, shakes, exposed concrete block and metal.
Ladd's Addition Conservation District Guidelines 13
Exterior Rehabilitation Guidelines
Hou:omb House, 1990 SE
Mulberry Avenue, c. 1915, Oregon
Histori<:al Society, ORHI 63002
4. ROOF FORM: Repair and alteration of roofs should retain:
a. The original roof shape and pitch;
b. Original structural and decorative features such as gables,
dormers, chimneys, cornices, parapets, pediments, frieze
boards, exposed rafters and other ornamental details; and,
c. Whenever possible the original type, size, color, and pattern of
roofing materials. New roof features including roof additions
and new dormers should be compatible in size, scale, materials
and color with the original building. Skylights, solar,
mechanical and service equipment, and new roof features
should be inconspicuous from the street.
5. FRONT FACADE DETAILING: Original entrances to buildings,
front porches and projecting features, such as balconies, bays and
dormer windows should be retained or restored.
6.
m
D
WINDOWS AND DOORS: Original windows and doors,
including trim, should be retained or restored. If repair is not
feasible, new windows or windows on additions should match or
be compatible with original windows in form, materials, type,
pattern and placement of openings. On residences, the removal of
original wood sash windows and replacement with aluminum
sash is especially discouraged. Restoration of commercial
storefront windows with large fixed glass panes below and
smaller glass panes above is especially encouraged.
7. AWNINGS: On commercial structures, retractable fabric awnings
which are architecturally compatible with the historic integrity of
the structure are encouraged. Awnings should fit within window
bays. Existing traditional awnings should be rehabilitated.
8. COLOR: Restoration of .original colors, or colors appropriate to
the style and era of the building, is encouraged.
14 Ladd's Addition Conservation District Guidelines
Typical streetcar era commercial
building with vintage signs.
Exterior Rehabilitation Guidelines
9. SIGNS: Whenever possible retention or restoration of original
pre-1940 signs is encouraged. For commercial buildings, wall
signs, window signs, canopy, and projecting signs attached to the
building are encouraged; freestanding signs are discouraged. Sign
materials and design and letters appropriate to pre-1940 buildings,
such as painted wood and neon are encouraged. Plastic sign faces
are discouraged. Signs should not be the dominant feature of a
building or site.
10. FRONT LAWN: On sites of non-commercial structures, retention
of front lawns, mature trees and older shrubs and perennials are
encouraged. Plants popular in the 1910's and 1920's are
encouraged. The predominant use of ground covers, such as bark
mulch and broadleaf evergreens, is discouraged. Original grades
should be retained; berms and excavations are discouraged.
11. FENCES AND RETAINING WALLS: Front and side yards which
abut a street should be visually open to the street. Hedges,
retaining walls and fences which visually obscure front yards are
discouraged. Fences should be kept behind building lines, as
viewed from the street.
12. PARKING: Required on-site parking should be located in the rear
yard and within original garages, if possible. Original garages
should be maintained for vehicle storage and parking and not
converted to other uses. Parking areas, providing space for three
or more cars, should be screened from adjacent properties; hedges
and canopy trees are recommended for screening. Parking areas
and driveways should not be placed in the front yard.
13. CRIME PREVENTION: Crime prevention elements should be
included in the design, with specific attention to landscaping,
parking areas, walkways, lighting, entries, and visibility.
Windows and entries should not be obscured. Parking areas,
walkways, and entries should be adequately illuminated for
visibility.
Ladd's Addition Conservation District Guidelines 15
16 Ladd's Addition Conservation Distru:t Guidelines
APPENDIX A
Information on the
National Register of
Historic Places
In 1989, Ladd's Addition was listed as a historic district on the
National Register of Historic Places. This listing means that buildings
in Ladds Addition are potentially eligible for several financial benefits,
including the State Special Assessment Program, whereby the true
cash value of a property is frozen for fifteen years. Other benefits
include investment tax credits (for major rehabilitation of income-
producing properties) and charitable deductions for donations of
conservation easements.
National Register listing does not mean any additional regulation of a
building, unless one is taking advantage of one of the tax incentives.
Properties placed on the Special Asessment Program are subject to
review by the State Historic Preservatin Office (SHPO) in consultation
with the Ladds Addition Conservation District Advisory Council. The
SHPO reviews exterior or interior modifications to a building. The
SHPO uses the Secretary of Interior's Standards (Appendix C) in its
review. To qualify for the program, a building must be a contributing
building in the district, as identified on the map in Appendix B. Some
non-contributing buildings may also qualify if modifications required
by SHPO are made to restore original architectural integrity.
Call the State Historic Preservation Office at (503) 378-5001 in Salem if
you have any questions about the Special Assessment Program or
other tax incentive programs.
Ladd's Addition Conservation District Guidelines 17
APPENDIX B
National Register
Historic District
Classification Map
as o£1989
18 Ladd's Addition Conservation Distril;t Guuulines
APPENDIX C
The Secretary of the
Interior's
Standards for
Rehabilitation
1. A property shall be used for its historic purpose or be placed in
a new use that requires minimal change to the defining
characteristics of the building and its site and environment.
2. The historic character of a property shall be retained and
preserved. The removal of historic materials or alteration of
features and spaces that characterize a property shall be
avoided.
3. Each property shall be recognized as a physical record of its
time, place, and use. Changes that create a false sense of
historical development, such as adding conjectural features or
architectural elements from other buildings, shall not be
undertaken.
4. Most properties change over time; those changes that have
acquired historic significance in their own right shall be
retained and preserved.
5. Distinctive features, finishes, and construction techniques or
examples of craftsmanship that characterize a historic property
shall be preserved.
6. Deteriorated historic features shall be repaired rather than be
replaced. Where the severity of deterioration requires
replacement of a distinctive feature, the new feature shall
match the old in design, color, texture, and other visual
qualities and, where possible, materials. Replacement of
missing features shall be substantiated by documentary,
physical, or pictorial evidence.
7. Chemical or physical treatments, such as sandblasting, that
cause damage to historic materials shall not be used. The
surface cleaning of structures, if appropriate, shall be
undertaken using the gentlest means possible.
8. Significant archeological resources affected by a project shall be
protected and preserved. If such resources must be disturbed,
mitigation measures shall be undertaken.
9. New additions, exterior alterations, or related new construction
shall not destroy historic materials that characterize the
property. The new work shall be differentiated from the old
and shall be compatible with the massing, size, scale, and
architectural features to protect the historic integrity of the
property and its environment.
10. New additions and adjacent or related new construction shall be
undertaken in such a manner that if removed in the future, the
essential form and integrity of the historic property and its
environment would be unimpaired.
Ladd's Addition Conservation District Guidelines 19
APPENDIXD
Inappropriate Changes:
adapted from A Field
Guide to American
Houses by V. & L.
McAlester
ORIGINAL BUNGALOW:
Defining elements include lap
siding, shingles in gables, open
porch with square wood posts,
multi-pane double-hung
windows, simple pipe handrails,
open roof overhangs with gable
brackets.
VARIANT 1. Inappropriate siding and enclosed
porch.
VARIANT 3. Inappropriate siding with vertical
- boards in gables, air conditioner, windows replaced,
brackets removed.
20 Ladd's Addition Conseruation Distru:t Guidelines
\
\
~!'!'!-..... •
VARIANT 2. Inappropriate awnings, shutters,
posts replaced with wrought iron, siding and soffits
enclosed.
VARIANT 4. Inappropriate siding and covering
trim boards, porch changed, windows removed,
brackets removed, colonial storm door, wrought
iron railing.