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Home My WebLink AboutCC Mass and Scale Tools Work Session 6-24-2025City Commission June 24, 2025 UDC Update Mass and Scale Work Session Engage.bozeman.net/udc Project Resource Bozeman Development Code Timeline 2020 2021 2022 2023 2024 2025 2026 Jan 2021 - Oct 2022: BCP implementation - affordable housing Nov 2020: Bozeman Community Plan (BCP) July 1, 2022: UDC update project begins Aug 11, 2022: Website goes live Sep 13, 2022 - May 1, 2023: City /Board sessions, neighborhood meetings July - Aug 2023: Community Development Board Commission Overview Aug 14, 2023: Draft code publicly available Aug 2023: Public open houses and code overview, public hearings begin Oct 2023 - Sep 2024: Review pauses, presentations to neighborhood/ community Sep 2024: Supplemental Engagement Plan approved Dec 2024 - May 2025: Open houses, workshops, meetings, surveys, toolkits May 20, 2025: Supplemental engagement concludes May 21, 2025: Revisions begin, public review / hearings, final decision by Commission May 17, 2026: State deadline for adoption Sep 12, 2022 - Ongoing: In person public engagement begins Activities We are here! Work Session Outline •Presentation by staff on mass and scale conceptual approaches •Questions by City Commission •Public Comment •Direction by City Commission regarding which mass and scale conceptual approaches to rely on in the updated UDC Mass and Scale Tools Interactions Example Note: Lot Size ●Lot Size: 50’ x 130’ ●6,500 sq ft Note: Setbacks ●Setbacks create a buildable area of 4,400 sq ft Note: Building Coverage ●40% Maximum Building Coverage reduces the buildable area to 2,600 sq ft Note: Amenity Space ●150 sq ft required (min) ●500 sq ft provided Note: Height ●Maximum of 3 stories ●6,200 sq ft floor area (including garages and porches) Note: Massing ●Maximum Wall Plate height of 25’ ensures that the third story is within the roofline of the building Note: Windows and Entrances ●15% - 20% transparency ●Porches and other covered entry features ●Duplex is compatible with existing Single Unit homes Mass and Scale 2D Concepts Lot setback *^ Lot area * Lot aggregation (maximum lot size) Lot coverage *^ Mass and Scale 3D Concepts Minimum dwelling floor area *^ Height *^ Stories and vertical massing *^ Wall plate ^ Floor Area Ratio (FAR) * Graduated square footage cap Building width/size ^ Step backs and planes *^ Zone edge transitions *^ Elevation design requirements *^ Division 38.260. - RULES OF INTERPRETATION Provides additional details to understand standards and address the complexities of sites with many different features and uses. B2-M R-A HOUSING •Lots of housing variety – including all these kinds of housing -- already exist in Bozeman COMMERCIAL Style, size, and use vary greatly and may include a residential component. Style, size, and use vary greatly. INDUSTRIAL 2D Concepts Setback *^ Note: Setbacks ●Setbacks create a buildable area of 4,400 sq ft out of 6,500 sq. ft. Setback Lot Area * Current Code Lot Area Requirements Ranges Residential: None – 5,000 sq. ft. per dwelling Industrial: None – 43,560 sq. ft. Commercial: None – 5,000 sq. ft. Mixed Use: None – 5,000 sq. ft. per dwelling Proposed draft does not include this standard Lot Aggregation Lot Coverage *^ Note: Building Coverage ●A 40% Maximum Building Coverage reduces the buildable surface area to 2,600 sq. ft. from 6,500 sq. ft. 3D Concepts Minimum Dwelling Size *^ Height *^ Data as of July 1, 2022 Stories/Vertical Massing *^ Measured floor to floor Wall Plate Height ^ Roof Type: Front Gable Total Height: 40’ Max wall plate height: 25’ Note: 3rd floor is within the roofline of the building, meets new R-B requirements 25’ Wall Plate Roof Type: Gambrel Total Height: 40’ Max wall plate height: 25’ Note: 3rd floor is within the roofline of the building, meets new R-B requirements 25’ Wall Plate Roof Type: Shed Total Height: 40’ Max wall plate height: 25’ Note: Wall plate exceeds 25’. Not permitted under new code 25’ Wall Plate NOT PERMITTED UNDER NEW CODE 25’ Wall Plate Roof Type: Shed Total Height: <40’ Max wall plate height: 25’ Note: Wall plate height now meets new code 25’ Wall PlatePERMITTED UNDER NEW CODE Dormers may exceed wall plate (<50% of façade) 25’ Wall Plate 25’ Wall Plate Dormers exceed 50% of façade NOT PERMITTED Dormers may exceed wall plate (<50% of façade) 25’ Wall Plate 25’ Wall Plate Wall Plate exceeded with rear bump-out NOT PERMITTED Floor Area Ratio * FAR = Area of structure divided by land area Graduated Square Footage Cap for Homes Building Width ^ Building Width RA B2-M Building Size *^ Building Size RA RB Step Backs & Planes *^ Step Back Plane Note: Existing Code ●6 floors on same wall plane building pulled up to streetscape Note: Example ●Building pulled up to streetscape ●10’ step-back at 4th floor Transitions *^ S Black AveE Olive St Existing Zoning Map Draft Zoning Map B-3 Building Design Standards *^ Commission Discussion & Direction 1.Which combination of tools does the Commission want to see in the UDC? Commission Discussion & Direction 1.Continuing to rely on stories for building height? 2.Reducing story height maximum of upper stories? 3.Deleting maximum building size in RA and RB districts 4.Adjusting maximum wall plate height in RB district 5.Continue to leave out minimum lot area and FAR from draft? 6.Apply step backs district wide to districts allowing 4 stories or more? a.If yes, then are zone edge transitions duplicative? b.If no, what adjustments do you wish to make to zone edge transitions? 7.Lot aggregation (max lot size)? 8.Graduated square footage cap?