HomeMy WebLinkAboutH - NWX PH-2 Design GuidelinesSECTION 6: PHASE 2
October 2022 Draft
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Introduction ..............................37
Location .........................................37
Community Character ...................37
Principles of Design ..................38
Development Regulations ..........39
Architectural Styles ...................44
Design Philosophy .........................44
Authentic Adaptations ...................44
Building Form and Massing ..........45
Colors and Materials .....................45
Materials and Finishes ..................46
Material Wrapping .......................46
Eave Paint .....................................46
Roof Materials ...............................46
Ornamental Details .......................46
TABLE OF CONTENTS
SECTION 6: PHASE 2
Gutters and Downspouts ...............47
Windows ........................................47
Shutters ..........................................47
Roofs ..............................................47
Garages ..........................................48
Alley Treatments ...........................48
Solid Waste ....................................48
Motorcourt Clusters ......................49
Attached Neighborhoods ...............50
Fences ........................................51
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SECTION 6: PHASE 2
Introduction
These Design Guidelines will serve as the design basis for future neighborhood development
in Phase 2 of the Northwest Crossing Master Plan. They are intended to help ensure a high
level of design quality while providing the flexibility necessary to encourage project designer
creativity. These Guidelines are also meant to promote development which is pedestrian-oriented,
interconnected, and engaging .
As a flexible document, the Guidelines can accommodate changes in lifestyles, consumer
preferences, economic conditions, community designs and the marketplace, as necessary.
These Guidelines should be used in concert with the City of Bozeman Municipal Code.
Location
The 42-acre Phase 2 site of the Northwest Crossing Master Plan is bound by Baxter Lane to the
North, Harvest parkway to the south, Homestead Creek to the west, and Cottonwood Road
to the East. The site itself is currently vacant of all buildings and the terrain gently slopes from
southeast to northwest. The North/South collector road, Rosa Way, will continue through the
site and connect Harvest parkway to Baxter Lane. Touchstone drive will also continue through
the site from the west, connecting to Cottonwood Road. Situated at the corner of Rosa Way and
Touchstone Drive is a proposed future Community Park which abuts the existing Homestead
Creek and future wetland trails. East of the site is a proposed Sports Park, part of which has been
constructed with current access from Baxter Lane.
Community Character
Creating a master planned community enables opportunities to provide neighborhoods with
more housing and lifestyle options, strengthening the livability for residents and diversity in
neighborhood appearance.
Homes reflecting various architectural styles should enhance the overall community, creating
visual uniqueness but also a cohesive community feel. Implementing this placemaking strategy
enhances the aesthetic character by creating coordination and aesthetic without causing
monotony.
The character will be captured through carefully integrating architecture, natural assets, and
landscape into the overall design. The character will draw from these assets and will also be
founded upon the context of the region. Above all, buildings should relate to the human scale in
their forms, elements, and details, so as to result in a pedestrian oriented and visually interesting
place to live.
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Principles of Design
Having a set of design principles helps to guide development and focus on cornerstones that
create a thoughtful and purposeful community. In accordance with Section 2 of the Northwest
Crossing Design Regulations and Guidelines, the following principles should be considered when
designing the Phase 2 community.
Site Evaluation and Design: Taking the land and views into account. Designing to
fit within the context of the environment and the adjacent uses. Other site design
considerations should be orienting front doors toward the street or paseo, offering
pedestrian connectivity throughout the community and open spaces, using appropriate
landscape planting to soften the built environment.
Scale: Homes in Phase 2 should be designed to enhance a pedestrian atmosphere, breaking
buildings down into smaller forms when appropriate and creating articulation for visual
movement.
Rhythm: Design features on structures should be placed with purpose and care. Doing so
enhances the elevation and provides a visual rhythm, yet overdoing it can cause monotony
and forced architecture.
Proportion: This is the relationship of a part to a whole. Providing features that are
proportionate such as shutters to window size creates style authenticity and form balance.
Balance. Proper distribution of form, materials and color across the entire structure
should be considered rather than looking at each element individually. Uneven
distribution of building mass or detail can make the structure feel unbalanced.
Color: Color can contribute to the diversity of the streetscape. However, too much color
can cause conflict. Colors should be complementary to each other and the other materials
as well as the architectural style of the home.
Textures and Shadows: Textures should be used for visual interest but also applied with
restraint so that structures don’t become too busy. Textures should be appropriate to the
architectural style and the color should be in concert with the other materials. Shadows
can create additional aesthetic and functionality. Thoughtful implementation of eaves and
other shadow-creating features is suggested.
Materiality: Materials should be complimentary to one another and appropriate for the
architectural style. They should be applied to terminate at an inside corner and artfully
included.
Design Integrity: Structures that comply with the above design principles will result in a
visual pleasing architecture and an overall quality community.
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Development Regulations
The following development standards apply to the product types in Phase 2. This section provides
a diagram illustrating development regulations for each product. Where this document is silent,
the Bozeman Uniform Development Code should prevail.
Figure 6.1: Motorcourt Cluster Conceptual Layout
Table 6.1: Motorcourt Cluster Development Standards (minimums)
Element Setback
(A) Front Living to ROW 10’
(B) Apron 3’
(C) Building to Building Separation 10’
(D) Rear to Lot Line 10’
(E) Side to Lot Line 5’
B
E
A
C
D
ROW
Easement
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Table 6.2: Alley Loaded SFD Development Standards (minimums)
Element Setback
(A) Front Living to ROW 10’
(B) Porch to ROW 10’
(C) Side to Lot Line 5’
(D) Rear Setback to ROW 10’ or 20’ With Stacked Parking
(E) Building to Building Separation 10’
(F) Wet Utility Easement 30’
(G) Utility Easement Inside Lot 5’
(H) ROW 20’
(I) Alley 16’
(J) Open Space 15’ (10% of Lot Size)
(K) Pedestrian Corridor 30’
Figure 6.2: Alley Loaded SFD Conceptual Layout
DD
A
B C
E
ROWEasementH
J
K
I
F
NOTE: Based on review of plans and site conditions by City Staff, it was “determined that the “private courtyard” and “rear yard” areas shown on the alley home open
space proposal (NWX_Alleys_OS Exhibit_Alt1.pdf, dated 8/17/2022) are contiguous, as required by Sec 38.360.330.E, Minimum useable open space for alley-loaded lots.
The two areas are connected and will allow usable space for residents.
Contiguous Open Space
Private Courtyard
Rear Yard
G
G
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Table 6.3: Small Lot SFD Development Standards (minimums)
Element Setback
(A) Front Living to ROW 10’
(B) Porch to ROW 10’
(C) Side to Lot Line 5’
(D) Rear to Lot Line 10’
(E) ROW to Garage 20’
(F) Building to Building Separation 10’
(G) Building Projection in Front of Garage 4’
A B
G
C
F
E
Figure 6.3: Small Lot SFD Conceptual Layout
ROW
Easement
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Figure 6.4: Townhome Conceptual Layout
Table 6.4: Townhome Development Standards (minimums)
Element Setback
(A) Front Living to ROW 10’
(B) Front Low Wall to ROW 10’
(C) Apron 3’
(D) Building to Building Side Separation 10’
C
A
D
B
ROW
Easement
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Figure 6.5: Duplex Setbacks Conceptual Layout
Table 6.5: Duplex Development Standards (minimums)
Element Setback
(A) Front Living to ROW 10’
(B) Porch to ROW 10’
(C) Side to Lot Line 5’
(D) Rear Setback to ROW 10’ or 20’ With Stacked Parking
(E) Building to Building Separation 10’
(F) Wet Utility Easement 30’
(G) Utility Easement Inside Lot 5’
(H) ROW 20’
(I) Alley 16’
E C
D
G G
B
D
H
I
FA
ROWEasement
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Architectural Styles
Architecture is a key component of the appearance of development within Phase 2. These design
guidelines provide general design criteria and guidance with the goal of promoting visual
compatibility while allowing for individuality and architectural diversity.
Both attached and detached homes in Phase 2 should be based upon the following styles:
• American Foursquare
• Craftsman
• Modern Farmhouse
• Contemporary
Design Philosophy
Providing a mix of styles minimizes monotony and encourages interest. The multi-style
streetscene should be diverse in architectural styles, features, windows, front doors, garage doors,
materials and colors.
Starting with the authentic style and transforming to a progressive version of the base style
is acceptable. Traditional styles tend to have defining features that should be consistently
implemented across the housing types offered. Moving to a more contemporary version of
traditional styles should still embrace defining features so that the style is recognizable but
understood to be a contemporary interpretation.
The following principles will guide the architecture to ensure quality implementation:
• Use architectural elements and details that reinforce the architectural styles.
• Choose appropriate massing, roof forms, colors and materials to define the architectural styles and practical to the product type.
• Ensure that plans and styles provide a degree of individual identity while being compatible.
• Provide a varied and interesting street-scene.
Authentic Adaptations
Recognizable authentic architecture is based on traditional forms, materials and details that
reasonably express the heritage of a particular style. Historically derived, or authentically
adapted elevations continue to focus on forms and details, but allow for the integration of
modern materials, colors and artistic interpretation to generate a contemporary, yet recognizable
expression of an architectural style. Historically adapted elevations combine these notions into
physical reinterpretation of an architectural style.
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Authentic adapted elevations should express a recognizable architectural style but can use artistic
design to incorporate new, modern or progressive forms, details and materials in the modern
context of architecture.
Additional styles may be proposed however, they must follow the same principles and attention to
detail as the specific styles provided. Newly introduced styles must be compatible with the overall
Northwest Crossing community aesthetic.
Building Details
Providing quality aesthetics in a community can often come down to the building details. From
materials to colors, construction methods to visual variety, details play a large role in the overall
community appearance. With the range of product types, small lot single family detached up to
row townhomes, details and form should be appropriate to the structure type and size.
Building Form and Massing
Homes should be broken down into smaller components to reduce the massing volume and
enhance the visual interest within the streetscene. Homes are suggested to provide a staggered
array of massing along the street. The techniques used should vary depending on housing type,
yet one example is to use massing setbacks at the second or third story. Creating this type of
articulation can help minimize the appearance of box-like structures.
Other enhancements to the building form include:
• Varied roof forms and heights;
• Changes in materials and color;
• Architectural articulation; and
• Clearly defined entry features.
Colors and Materials
The use of color and materials is an essential ingredient to quality development. Successful
applications of colors and materials improve the character and essence of the community.
The primary goal of color and materials palettes is to further enhance and define the architectural
styles within this document. Equally important is the balance of diversity and harmony; variety of
color and materials must be achieved within the context of a harmonious community.
• Selected colors and materials should be appropriate to the styles they represent and used to further differentiate from the other styles.
• Architectural screens, fences and accessory structures should be compatible in material, color and texture to the main buildings.
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Materials and Finishes
Specific materials should be identified for each architectural style. The chosen materials should
represent the specific architectural style enhancing the community aesthetic.
Use complementary building materials that promote a harmonious appearance and provide
interest and variety consistent with the architectural styles. Additionally, material finishes should
express permanence and quality. The following are suggested methods for material and finish
applications:
• Avoid frequent changes in materials;
• Detail finishes properly with the architectural style; and
• Use high-quality, durable, low-maintenance materials.
Material Wrapping
Architectural elements should end at a logical terminus that is incorporated into the overall
architectural design.
When columns, tower elements and pilasters are part of the elevation and materials or used, wrap
entirely so that a “pasted on” appearance does not occur.
Roof Materials
Roof materials, colors, and treatments should correspond to the individual character or style of
the home and be compatible with the overall look of the neighborhood.
Ornamental Details
Use details that appear as functional elements and match the architectural style.
Gutters and Downspouts
Integrate gutters and downspouts into the home design when used.
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Windows
Window details differentiate architectural styles and can provide a high level of architectural
enrichment. The selection and proportion of the windows to the façade should be responsive to
the architectural style of the building. Size and shape should be considered to assure a balanced
relationship with the surrounding roof and walls. In general, windows should enhance rather than
dominate the overall architectural character.
• Divided lite or high-quality simulated divided lite windows are encouraged and should reflect the architectural style; and
• Non street-facing and rear yard windows may delete the divided lites.
Shutters
All shutters should comply with the following:
• Mount shutters on finished wall material, embedded shutters prohibited;
• Match shutter size to the recessed opening window width;
• Shutters must match architectural style; and
• Shutters not required on every window, they should be used purposefully.
Roofs
Rows of homes seen from a distance or along large roads are perceived by their contrast against
the skyline or background. The dominant impact is the shape of the building and roof line.
Composition and balance of roof forms are as definitive of a streetscape as the street trees, active
architecture, or architectural character.
• Rooflines, pitches, ridgelines, and ridge heights should create a balanced form to the architecture and elevation.
• Direction of ridgelines and/or ridge heights should vary along a streetscene.
• Roof overhangs (eaves and rakes) may be used as projections to define design vocabulary and create light and shade patterns.
• Roof form and pitch should be appropriate to the massing and design vocabulary of the home.
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Garages
The location of garages provides another opportunity to vary the street scene. The following
applies to conventionally loaded (front door and garage on same side) detached homes:
• Where feasible, plot and reverse plans when possible so that garages and/or entries are adjacent to each other. Occasionally, break this pattern so that it will not become overly repetitious or reflect the massing directly across the street.
• De-emphasize the visual prominence of garage doors through a method such as setting back the garage from the front facade or articulating the garage door with windows or paneling.
• Design garage door patterns consistent with the style of the home.
• Provide different style door patterns for each architectural style.
• Use a garage light occupancy sensor when providing garage door windows.
Alley Treatments
The use of alleys should be upgraded from purely functional, simple garage-access ways to a space
that residents experience daily. Design of alleys should address the functional and aesthetic features
of the space to create a pleasant experience for residents. Some methods to add interest are:
• Stepped massing (recessed or cantilevered) offsets of at least 1 foot.
• Window trim, colors, or materials and appropriate details from the front elevation
• Rear privacy walls and pedestrian gates designed and located for ease of unit access.
• Enhanced garage door patterns or finishes; garage door should complement the design
vocabulary of the home/neighborhood.
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Motorcourt Clusters
Detached single-family homes located in clusters allow for traditional homes in a higher density
configuration while reducing the number of garages that face a street. Due to the nature of their
configuration, some design elements differ or should be considered in comparison to detached
conventional lots. Although the design guidelines stated in the prior sections of this chapter apply,
a number of additional concepts should be considered.
Plotting
• Front doors should face onto a central paseo, motorcourt or street.
• Units at the street end should have front doors facing the street.
• Garages should be accessed off of motorcourt.
• Guest or driveway parking may be accommodated for in the motorcourt.
Massing
Unlike conventional detached homes, these smaller detached homes do not always allow
room for enhancements such as wrapped porches or massing offsets. However, where
possible, include elements such as a small porch, minor offset, or the application of single
story elements (see following section). Material and color may also be used to break up
large wall planes.
Single Story Elements
As the neighborhoods get higher in density, opportunities to provide single story elements
become fewer. The size and scale of these single story elements become reduced due to
limitations in space and type of massing for these denser neighborhoods. Key entry points
into the neighborhoods and places of high public visibility are opportunities to place
these pedestrian-scale features. These elements may include eyebrows over entries, arches,
potshelves, trellis’, and other decorative features.
Upper Story Massing Offsets
As neighborhoods become denser, the level of massing offsets may become less
pronounced. This is natural and acceptable as long as the overall motorcourt does not look
out of pedestrian scale and lacking articulation.
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Attached Neighborhoods
By the very nature of the building types, attached home neighborhoods are much like
small villages. Though most of the design methods stated in this chapter apply to attached
neighborhoods, the following are a number of additional considerations.
Each “small village” should be designed for compatibility within itself, using a blend of
harmonious architectural styles and a tastefully balanced palette of colors and materials. However,
they must also share aesthetic that will enable cohesion with the rest of the Phase 2 community.
The following general concepts should be considered when planning for and designing attached
housing.
• Design and site buildings with a strong physical relationship to common areas of the community.
• Emphasize pedestrian access and connections to public sidewalks, paseos, and open space systems.
Site Planning Criteria
The following site planning criteria should be treated as design guidelines for “small
village” site planning and community placemaking.
• Building massing, design, and setbacks should reinforce a pedestrian-scale for the
street scene without generating unusable pockets or dead spaces.
• Internal auto circulation on higher density villages will typically be served by a
drive aisle system rather than a local street system.
• Buildings should be oriented toward streets, pedestrian pathways and/or active
spaces.
• Where building design undulates, spaces along the pedestrian realm should be
large enough to foster visual interest, but not too deep to disrupt the continuity of
the scene.
• Provide pedestrian connections to trails, interior paseos, and courts from
perimeter sidewalks.
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Parking and Garage Placement
The design and layout of parking provides additional opportunity to promote interaction
among residents. The following techniques should be considered where appropriate:
• Parking for attached dwellings, such as garages, carports or open parking areas,
should generally be located behind or to the side of buildings.
• Attached units may use common driveways, private streets, and alley-loaded
access.
• Walkways should be convenient, easily-accessible provided and connect parking
areas with dwellings.
Fences
Fences help to define and enhance the visual character of the community. Phase 2 utilizes various
fence designs to provide aesthetic variety, maximize view opportunities and enable privacy. These
guidelines apply to all product types in Phase 2.
Community Fences
Design consideration is necessary due to their visual impact upon arriving at the community.
Community fences can be a large component to the overall community aesthetic. A strong,
cohesive appearance is important when they do. Desired appearance should be achieved through
the use of general guidelines.
All fences that adjoin community street scenes and are along the boundary edges should be
deemed community fences.
Where common or private areas interface with perimeter streets, public open space and/or
residential lots, fencing should be consistent with the overall theme of the community.
Perimeter Rail Fence
Rail fencing can be used in the public realm such as delineating the community boundary, around
park areas, or along trails. They are visually pleasing and can contribute to the aesthetic of the
community landscape. Such fences should not exceed 4’ in height.
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Privacy Fences
In order to help maintain connection between homes and public street spaces, the following
guidelines should apply:
• If using a low-fence design, front yard and corner side yard fences should be limited to 4’ in height. Corner side yard fencing may extend to 6’ in height after the first 4’ of the front elevation wall plane.
• Rear and interior side yard fences should not exceed 6’ in height. Fences located in the rear or side setback of properties adjoining any city linear park shall be a maximum height of 4’ (per BMC 338.350.060).
• Rear yard and interior side yard fences should be set back a minimum of 4’ from the front façade of the building.
• All fencing shall comply with BMC 338.350.060.
Figure 6.6 Conceptual Front Door and Fencing Diagram
Legend
4’ Max. Fence when adjacent to streets or City linear parks
6’ Max. Rear and Side Yard Fences permitted when not
adjacent to streets or City linear parks
Required Front Door Orientation