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HomeMy WebLinkAboutArticle 4_38.520.040 Building Massing and Articulation ARTICLE 5-PROJECT DESIGN DIVISION 38.520. - BUILDING DESIGN Sec. 38.520.010. - Purpose. See the individual "purpose" statements for each section in this division. Sec. 38.520.020. - Applicability and compliance. The provisions of this division apply to all development within Bozeman, except single-, two-, three-, and four-unit dwellings on individual lots unless otherwise noted. Specifically: A. For clarification on the relationship between the provisions in this division and other documents and codes, see 38.500.020.A. B. For the application of building additions and remodels and site improvements, see 38.500.020.8. C. For clarification on how the provisions of this division are applied, see 38.500.020. D. The review authority may waive or relax these provisions in the industrial zones depending on the type of use, number of anticipated employees and customers, and the site's physical context. The greater number of employees and/or customers and higher visibility levels warrant a greater application of building design standards. Sec. 38.520.030. - Building character. A. Purpose. 1. To promote regionally appropriate architecture that is based on human scaled design details, durable high quality materials, sustainable design measures, and that responds uniquely to the site's context. 2. To emphasize high quality design in Bozeman's built environment. 3. To avoid generic, corporate architectural designs that are not readily reusable or convert to another use that lessens the character and identity of Bozeman. For example, some franchise convenience uses have very specific architectural features (such as a distinctive roofline design that functions as a sign) that reinforce their identity. B. Building character standards and guidelines. Developments within the Neighborhood Conservation Overlay District (NCOD) are subject to 38.240.020. Sec. 38.520.040. - Building massing and articulation. A. Purpose. 1. To articulate building elements in order to achieve an appropriate perceived scale and add visual interest. 2. To create clear and welcoming building entries. PUBLIC HEARING DRAFT i NOVEMBER 24,2025 UNIFIED DEVELOPMENT CODE I BOZEMAN,MONTANA 5-21 ARTICLE 5-PROJECT DESIGN B. Nonresidential facade articulation. Storefronts and other buildings with non-residential uses on the ground level must include a minimum of three of the following articulation features every 60 feet (maximum) to create a human scaled facade pattern: Storefronts and other buildings with non-residential uses on the ground level must incorporate a human-scaled facade pattern. Each facade segment of 60 feet or less must include articulation features as follows: 1. Required Features: a. The following two articulation features must be included: (1) Change in roof line per subsection E below. (2) All applicable buildings must provide vertical building modulation of at least 2 feet in depth, tied to a change in roofline per subsection F below or a change in building material, siding style, or color. 2. Additional Features: a. At least two of the following additional articulation features must also be included: (1) Windows. (2) Entries. (3) Use of weather protection features. (4) Use of structural expression. (5) Change in building material or siding style. (6) Articulation of a single building material through varying colors, textures, or incorporating joints or an integrated trim pattern. (7) Other design techniques that effectively reinforce a human-scaled pattern compatible with the building's surrounding context. (8) Providing vertical elements such as a trellis with plants, green wall, art element. 3. Exceptions: a. Only two articulation features are required on building facades in the B-P district,- b. Only one articulation feature is required on building facades in the M-1 district; c. Buildings in the M-2 district are exempt from these standards. d. Building walls facing alleys or rear and side yards must incorporate at least two of the articulation strategies listed in paragraph B. 5-22 UNIFIED DEVELOPMENT CODE I BOZEMAN,MONTANA PUBLIC HEARING DRAFT I NOVEMBER 24,2025 ARTICLE 5-PROJECT DESIGN t �r .e 4 The left image uses window patterns,weather protection elements,and roofline modulation. The photo example to the right also includes window pattems and weather protection along with brick vertical piers to articulate the fa4ade. The lower example illustrates how a multitenant retail building can successfully be articulated(windows,weather protection,vertical building modulation,and roofline changes) r Figure 38.520.040-1. Facade articulation examples. C. Residential facade articulation. Residential buildings must include articulation features at appropriate intervals relative to the scale of the facade in order to reduce the perceived massing of the building and add visual interest. At least three of the following features must be employed at intervals relative to the individual dwelling units or at a maximum of every 30 feet. The scale of the facade articulation should be compatible with the surrounding context. 1. Use of windows. 2. Entries. 3. Use of weather protection features. 4. Use of vertical piers/columns. 5. Change in roofline per subsection E below (required for multi-unit buildings in the R-C and R-D districts). 6. Change in building material and/or siding style. 7. Articulation of a single building material through varying colors, textures, or incorporating joints or an integrated trim pattern. PUBLIC HEARING DRAFT i NOVEMBER 24,2025 UNIFIED DEVELOPMENT CODE I BOZEMAN,MONTANA 5-23 ARTICLE 5-PROJECT DESIGN 8. Providing vertical building modulation if tied to a change in roofline modulation per subsection F below or a change in building material, siding style, or color. 9. Other design techniques that effectively break up the massing at no more than 30-foot intervals. 10. Providing vertical elements such as a trellis with plants, green wall, and/or art element. 30' max. 30' max. 30' max. Below examples use a combination of vertical building modulation,window patterns,material changes,and roofline modulation. t i Figure 38.520.040-2. Residential facade articulation examples. D. Departure criteria associated with articulation standards. Proposals must meet the purpose of the articulation standards. The following criteria will be considered in determining whether the proposed articulation treatment meets that purpose: 1. The type and width of the proposed articulation treatment and the degree to which it achieves the purpose of the standards, given the building's current and desired context (per Bozeman's land use plan or applicable adopted subarea plan). 2. The zoning district in which the project is located and the level of flexibility appropriate to that context. a. R-A and R-B districts: Greater flexibility may be appropriate due to their lower-intensity residential character, diverse housing forms, and typically smaller-scale development patterns. b. R-C, R-D, REMU, and nonresidential districts: Flexibility is more limited due to expectations for greater building intensity, more consistent street patterns, and higher design requirements. 3. The quality and compatibility of facade materials - including doors, windows, and other architectural features - and their ability to add visual interest to the street from both a pedestrian scale and more distant viewpoints. 5-24 UNIFIED DEVELOPMENT CODE I BOZEMAN,MONTANA PUBLIC HEARING DRAFT i NOVEMBER 24,2025 ARTICLE 5-PROJECT DESIGN E. Roofline modulation. 1. In order to qualify as a facade articulation feature in subsection 8 and subsection C above, rooflines must employ one or more of the following elements: a. For flat roofs an extension of the parapet or a break in the parapet of at least two foot measured from the adjacent roof or adjacent parapet. If no parapet is present a horizontal roof edge/eave extension of at least two feet. b. A pitched roofline segment(s) scaled appropriately to the facade. c. A facade projection of at least one foot in depth, provided at the same location as the roofline change described in (a) or (b) above. d. To qualify as a modulation, the required treatment must include either (c) in combination with (a) or (c) in combination with (b). 2. Departures will be considered provided the roofline modulation design effectively reduces the perceived scale of the building and adds visual interest. _ _-Knimumheight difference-V UL n ,. $ N W.- - Roofline modulation examples for flat roofs. Figure 38.520.040-4. Acceptable examples of roofline modulation. RR�� Hi -�7 The left building illustrates a pitched roof example and the right building includes a combination of flat and gabled rooflines. Figure 38.520.040-5.Acceptable examples of roofline modulation. PUBLIC HEARING DRAFT I NOVEMBER 24,2025 UNIFIED DEVELOPMENT CODE I BOZEMAN,MONTANA 5-25