A.
ARCHITECTURAL GUIDELINES
SPECIFIC STANDARDS & CRITERIA for
GENERAL
The intent of these standards & criteria is to preserve
the physical features, historical and architectural
character, and residential nature of the Triangle area.
MISSION HILL TRIANGLE ARCHITECTURAL
CONSERVATION
DISTRICT COMMISSION
Dear Mission Hill Triangle Resident and/or Property
Owner:
Enclosed, please find a copy of the Standards &
Criteria for the Mission Hill Triangle Architectural
Conservation District. These guidelines outline the
types of work which are reviewed by the Commission,
as well as items which are exempt from commission
review.
Whether or not you are contemplating work to your
building, please make yourself aware of these
guidelines. They will apply if work you plan to
undertake exterior work on the façade, or any sidewalls
of your building that are visible from a public way.
The intent of the enclosed Standards & Criteria is to
preserve the physical feature, architectural character,
and appearance of the Triangle and to guide both the
applicants and Commission in making decisions
regarding requested alterations or improvements.
There is an application form available if you need to go
through the process. Professional assistance is
available from the City of Boston in completing the
form, however, you are responsible for arranging for
any accompanying documentation (such as
photographs) required for the application.
If you ever have any questions regarding proposed
work, commission staff (Colleen Meagher, 617-6353850) is available to answer your questions.
The dominant historical and architectural features of
the district are the late 19th -century masonry rowhouse
units. Houses within these units appear relatively
uniform in size, materials, setback, and style, with the
individuality of the unit being subordinate to the
harmony of the street.
These standards and criteria are intended to guide the
inevitable changes to the exteriors of buildings and
physical features within the district, in order to make
those changes sensitive to the architectural character of
the district, and to prevent intrusions.
There is no requirement to do work that is not initiated
by the owner of the property.
The most important feature of the buildings are the
façades (including roofs) that face the public streets
and avenues, and therefore these are subject to review.
Sidewalls visible from within the district are also under
review.
Original window and door openings will not be
enlarged, framed down, or closed, with the possible
exception of basement windows (subject to review).
Existing non-conforming window and door openings
may be altered to return to the original size, shape, and
style.
Greenhouse windows are not allowed on the façades.
Window Sash
All sash windows that are double hung will be retained.
If replacements are necessary, they must be double
hung, or appear to be double hung.
Colored-, art-, or leaded-glass windows will be
retained.
The original number and arrangement of lights (glass
panes) will be retained.
Applied exterior muntins will be allowed if they are
painted and bonded to exterior surface of the glass.
All proposed exterior changes involving replacement
doors and doorways, including transoms and vestibule
sidewalls, will be reviewed.
Original doors will be retained whenever possible. If
replacement is necessary, the new doors will match the
original as closely as possible. Non-original doors,
when replaced, should be of wood or appear to be
wood with panels and double leaves. Special
consideration should be given to the preservation of
etched- or frosted-glass door panels. Contemporarystyle changes to doorways are not encouraged and are
subject to review.
Original entryways and paneling will be retained.
Modern-style alterations are not encouraged and shall
be subject to review.
Outer transoms should not be closed in or removed.
Outer Vestibule Doors
Installation of new outer vestibule doors is subject to
review. Metal-and-glass storm doors are not
encouraged; if used, raw, unpainted metal is
inappropriate.
Ornamentation
Non-wooden sash should have a finished color closely
matching the selected trim color.
Sills and Lintels
Original decorative moldings and stonework
surrounding a window or door will be retained
whenever possible. If such material is missing or so
deteriorated as to require replacement, it will be
replaced with an element which duplicates the mass,
material texture and general form of the original.
Original sills and lintels should be retained and
repaired, if possible.
Ornamentation belonging to a different period and style
of architecture is not appropriate.
Rear elevations are rear yards will not be reviewed,
whether or not visible from a public way.
Replacement, when necessary, shall correspond to
original, if possible.
Iron bars, grilles and grates on windows and doors
should be as unobtrusive as possible. (See section P.)
B.
Oriels
C.
The original configuration of windows will be retained.
Original oriels, if existing, should be retained.
No new openings in façades will be allowed unless
they are re-openings of the original.
Doors
Original stoops (including stringer, riser, and treads)
and steps on the main façade will be retained whenever
possible.
Any proposed changes or alterations to the elements
mentioned above will be reviewed unless specifically
exempted; preference will be given to alterations that
maintain, preserve, or restore according to the
standards and criteria for elements identified in the
succeeding sections.
WINDOWS AND DOORS
Effort should be made to maintain wooden sashes
whenever possible.
STOOPS AND FRONT STAIRS
Replacements should match the original in their
massing and location. Concrete colored to match other
masonry trim is a preferable treatment for replacement.
Since the use of marble is frequent in the district,
replacement of deteriorated marble in kind is
encouraged.
Brick and/or bluestone are inappropriate materials for
this architectural period.
the vertical addition does not interrupt the roofline as
seen from the front of the building. Size and placement
of satellite-dish antennas will be under review.
Original slates visible from a public way should be
retained. Replacement should be of slate, slate
substitute, or dark asphalt shingles.
Railings, if added, should be as unobtrusive as
possible. Black iron is preferable.
The use of siding on the mansard levels of buildings is
not encouraged. If siding is used, material should be
narrow to approximate the pattern of slate courses and
must not cover any trim.
D.
Chimneys
FRONT PORCHES
Original front porches should be retained and repaired
whenever possible.
Original brick chimneys, caps, and pots should be
retained. Replacement should match original.
Replacement should match original in size and
location.
F.
OTHER FAÇADE ELEMENTS
Replacements, when needed, will substantially match
originals in shape, location, and installation technique.
Additional downspouts and stormwater conductor
pipes will be made to match and located to blend into
the façade was much as possible. Existing locations
should serve as a guide for locating new downspouts
and stormwater pipes.
Downspouts and stormwater conductor pipes should be
painted to blend with the façade material, match the
cornice and trim color, or be left natural copper. (See
section P on color choice.)
Exterior paint may be removed with proper safeguards
from any surface not originally intended to be painted,
including most masonry.
In general, the most benign method that works should
be used; brick and other porous masonry will not be
sandblasted.
Allowing the existing paint to weather to the original
surface may be preferable to either removing or
repainting.
Trim Color See “Exemption Section”
Electrical Conduits
H
MASONRY
Alarm systems should be as unobtrusive as possible
and located next to existing windows. Wiring and
conduits are not to be attached or cross the surface of
the building.
General
Balconies and Fire Escapes
Masonry should never be sheathed in another material
due to potential moisture and chemical damage.
No new fire balconies will be permitted on the façades
of buildings unless requires for safety and an
alternative egress route is not possible.
Sandblasting will not be permitted. Gentler cleaning
methods shall be used.
All masonry elements, including decorative areas,
should be retained.
Cornices
E.
ROOFS, DORMERS, VERTICAL
ADDITIONS
The original form and slope, if any, of the roof will be
retained. Significant characteristics of this district are
the intact cornice, mansard, and flat roof lines within
units of rowhouses. Rooftop additions visible from
public ways are virtually non-existent within the
district; continuation of this situation is important.
Whenever possible, existing dormers seen from a
public way should be retained.
Replacement of dormers should approximate the shape
and placement of the original.
The entire cornice, including original details, will be
retained wherever possible. Replacements of the
whole or pieces will match the original in size, shape,
material, and type of detail.
Cornices with visual continuity with adjacent buildings
should be treated to reinforce that continuity.
Replacement must strongly compliment the general
appearance, if duplication is impossible.
Fire balconies should be connected horizontally.
If existing fire balconies are removed, the façade
material should be carefully repaired to match existing
materials.
Replacement
Gutters and Flashing
The size and location of the gutter is an integral part of
the cornice. Replacements should match original
design in shape and method of attachment.
No new decorative balconies should be added to the
façade.
G.
Any vertical addition (penthouses, railings, solar
panels, mechanical equipment) that can be seen from a
public way within the district is not appropriate and
will not be approved. In buildings with a pitched roof,
additions may occur behind the ridge line of the roof if
All replacement elements should match the original in
size, color, and surface texture as closely as possible.
EXTERIOR PAINT
Repair
Materials will be consistent with the original in design.
Ornamental dormer trim should be retained.
Previously unpainted masonry surfaces should not be
painted, except if deterioration or repair requires it. In
this case, the color choice should match as near as
possible the original color of the masonry.
Raw, mill-finished metal (other than copper) is not
appropriate.
Downspouts and Stormwater-Conductor Pipes
Originally, downspouts and stormwater conductor
pipes were located in unobtrusive places.
General
Materials that have never been or were not intended to
be painted should not be painted (e.g. copper, brick,
sandstone, or marble). (See section H “Masonry,
General, number 4.)
Exterior Paint Removal
Defective mortar joints should be carefully repaired so
the color and raking match the original. Attention to
the mix and application is encouraged to minimize
shrinkage of the new mortar.
Cracked or broken masonry elements should be
repaired and retained in all possible situations, or if
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replacement is necessary, with the same or very similar
material. For example, stone lintels or other stonework
should not be replaced with brick.
In the event that a party wall becomes exposed as a
side wall, the exposed wall should have adequate
structural reinforcement and a finished treatment, such
as a course of standard brick of closely matching hue.
All new construction is subject to District Commission
review and approval. Plans submitted for approval
must be consistent with, or complimentary to, the
historical and architectural character and appearance of
the neighborhood. Particular attention will be pair to
scale, materials, set backs, and rhythm of the façade.
Design should not be imitative of a style earlier to that
which is prevalent in the district.
J.
L.
Wood, chain-link, or opaque fences are not appropriate
to front yards. Where existing, they should be treated
to be unobtrusive in color, and preferably screened by a
hedge of similar height.
Stone and marble curb walls surrounding the front
yards should be maintained.
Front-Walkway Materials
PUBLIC AREAS
Sidewalks
Public sidewalks should be designed and constructed to
reinforce the character of the district. New paving
materials for public sidewalks will be of consistent
material throughout the area and are subject to District
Commission review and approval.
Street Furniture
All street furniture is subject to District Commission
review and approval.
DEMOLITION
All plans for demolition of any existing building, or
portion of a building, visible from a public way will be
subject to District Commission review and approval.
M.
RECONSTRUCTION
In the event of fire or other destruction to an existing
building, replacement structures or elements thereof
should match the original in design and materials as
closely as possible and are subject to District
Commission review and approval.
General
Any new wiring for electrical service, telephone
service, cable television, etc., should be placed
underground, and the street and sidewalk must be
repaired to match the surrounding area in form,
material, and detailing. Receptacle boxes (exempting
remote utility-reading devices) should not be placed on
the building façades.
Water, Gas, Sewage Lines
Installation of new underground lines or repair of
existing lines shall result in the street and sidewalk
being repaired to match the surrounding area.
K.
Much of the character of the district depends on the
scale and appearance of the open spaces along streets.
These features, the front yards and walkways, are
generally bordered by masonry curbing, and should be
retained as originally intended. Compatibility with
adjacent yards is encouraged.
Front Fences
Existing iron fences should be retained (and repaired as
necessary).
New or replacement fences should be made of
materials appropriate to the period and style of the
building. Wrought or cast iron of standard or rolled
stock, not exceeding the height of the window sills of
the first floor, are recommended.
These few properties include 1617 Tremont Street,
134–140 Smith Street, and 690 Huntington Avenue, at
the corner of Wigglesworth Street. Because of the later
construction dates, and non-conformity in use and
architectural character to the remainder of the district,
these will not be subject to the same standards and
criteria as the residential properties.
Changes and alterations, except for demolition and new
construction, to these structures will be reviewed only
in the following:
Height: Cannot exceed the top roofline of the abutting
structures within the district.
Asphalt shall not be used.
Original paving stones or slabs over coal chute covers
or openings should be retained whenever possible.
FRONT YARDS AND WALKWAYS
Street Lighting
Utility Items in Front of Buildings
Cement, brick, and granite pavers are the preferred
materials.
Front Yards
I.
All new street lighting is subject to District
Commission review and approval.
The private sidewalks are visually related to the
building and should reinforce the quality and
appearance of the architecture.
Commercial Properties Constructed After The Main
Period Of The District’s Significance
The uniform setback of buildings and the resultant
front yards, accomplished through early deed
restrictions, are a significant feature of the
neighborhood.
Land Coverage and Setback: Must conform to those
established by the abutting structures within the
district.
Overall Materials : Should harmonize with the
materials of the abutting structures within the district
and should relate to those of the existing structure
being changed or altered.
Massing: Must conform to that established by the
abutting structures within the district.
Existing front yards should not be paved.
N.
Excavation of major portions of front yards below
existing grades should not be allowed except for small
areaways to accommodate existing window openings,
ventilation, or drainage.
SIGNS
General
Construction of buildings, portions of buildings, or
other ground-level projections in the front yards will
not be permitted.
All signs within the district are subject to the Boston
Sign Code. New and additional signage is also subject
to this code. All signs must be approved by the District
Commission in order to ensure architectural and
historical appropriateness.
O.
Minimal illumination of signs is encouraged.
COMMERICAL PROPERTIES
Signs shall not have applied plastic letters. Use of
painted wooden signs of a traditional design are
encouraged.
NEW CONSTRUCTION
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Billboards are not permitted.
Exterior blank walls should not be used as a sign,
display, or bulletin board.
Exterior lighting (new or additional) should not be
glaring.
Mechanical equipment must be visually enclosed and
placed to be unobtrusive.
Storefronts Previously Constructed as Additions to
Façades and Side Elevations
Changes to these additions will be reviewed.
If removal of these additions, in whole or in part, is
desired, the repair to the adjacent wall should be in
harmony with the remainder of the row.
P.
ITEMS THAT ARE EXEMPTED FROM
REVIEW
A number of feature are exempt from review.
Nonetheless, the visual character of these elements
contributes to the overall harmony of a building and to
the district. The following is an attempt to guide the
homeowner in making appropriate and sensitive
choices:
Light Fixtures: They should be appropriate to the later
Victorian style of the buildings, residential in character,
and not overly large or glaring. Early period or
colonial styles are not in keeping with the district
character. Use of exposed conduit is discouraged and,
where necessary, it should be painted to match the
background material. Simple contemporary fixtures of
“appropriate” size are often compatible to an
architectural district. Unornamented modern fixtures
can be appropriate. Exterior flood lights should have
minimal “spill over” to abutting buildings.
Exterior Shutters and Blinds: Louvered window blinds
are most appropriate on buildings with original shutter
hardware. New blinds should be of wood, mounted on
pintels, and appear to be operable. They should match
the height and one-half the width of the window
opening. They should also be dark in color.
Window Grilles: Security grilles should be
comparatively simple in design and sized to fit fully
within the window opening. They should be painted
black, and the horizontal rails should have pierced
joints (and not overlapping, welded joints). Grilles
should also be mounted within the reveal of the
windows and secured into the mortar joints (rather than
into the masonry).
Portable Window Air Conditioners: Seasonal window
air conditioners should be installed, whenever possible,
on secondary elevations. Those on façades should not
protrude beyond the line of the building. No throughwall air conditioners shall be allowed.
Intercom and Alarm Devices/Door Hardware: Door
hardware should be compatible with the size and finish
of original examples; Victorian-era styles are most
appropriate, and early American “colonial” styles are
the least appropriate. Buzzers, intercoms, and
mailboxes should be located within the recessed entry
(or vestibule) and not on the façade of the building.
Brass-plated devices are encouraged. Alarm devices
should be mounted only in inconspicuous locations.
Window Boxes: These should be painted to match the
trim color and sized to match the width of the window
opening.
Canopies/Awnings: These are not encouraged, unless
physical evidence on the building (photographic
evidence) documents their original presence on the
building. Where used, they should be of canvas
mounted on retractable hardware (rather than a fixed,
metal frame).
Storm Windows: Exterior combination storm windows
should have a baked-enamel finish that closely matches
the trim color of the window. In some instances, the
frames of exis ting storm windows may be repainted to
match the trim; dark finishes (bronze, black) are more
appropriate than standard white. Mill-finish aluminum
storm windows are strongly discouraged. The framing
should be narrow, and the meeting rail should align
with the primary window.
Paint Color: IN NO CASE SHOULD PAINT BE
ALLOWED ON PREVIOUSLY UNPAINTED
MASONRY SURFACES, THIS EXEMPTION
PERTAINS ONLY TO COLOR CHOICE. Although
paint color will not be reviewed, the following is an
attempt to guide the homeowner in making appropriate
and sensitive choices:
Window casings/trim: In general, dark earth-tone
colors or a combination of a lighter, stone-colored trim
and black sash are most appropriate.
Sills and Lintels : When painted, sills and lintels should
be in earth or stone tones.
Marble: If previously painted, marble may be
repainted in light tones.
Metal Storm Doors: If used, a metal storm door should
match the color of the existing door.
Gutters and Flashing: Gutters and flashing should be
painted to match the cornice or trim, or in the case of
copper, left natural.
Dormers: In some cases should be painted a separate
color on the mansard level; often harmonizing with
slate tones is most appropriate.
Street Signs
Including traffic, directional, and parking, should be
attached to an existing public lamp post or pole
whenever possible.
Sign posts for public signs should be installed only if
necessary.
Number of posts used for public signs on a street
should be maintained to the minimum number
necessary to perform their function.
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