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Zoning certificate · Planning application

Two-story garage with one-bedroom apartment above approved for single-family lot

The city approved a 1,199-square-foot, two-story building behind an existing home, with a two-car garage below and a one-bedroom unit above. Conditions bar commercial use and limit exterior construction hours.

ApprovedCZC26-00030Filed April 27, 2026West End · 2509 W Bannock St+1 related filing
Site plan for Two-story garage with one-bedroom apartment above approved for single-family lot
Site plan from the application documents.
Pin at the reported location; the shaded outline is the primary parcel (Ada County).

From the filing

The application's description as it appears in City of Boise's record. See the official record

The city approved a new two-story building behind an existing single-family home at 2509 W. Bannock Street in Boise. The roughly 1,199-square-foot building would have a garage on the ground floor and a one-bedroom apartment (accessory dwelling unit) upstairs. It would be about 26 feet 6 inches tall and reached from the rear alley.

ADU above a detached two-car garage

Project name on file: 2509 W BANNOCK ST - ADU

Timeline

  1. July 7, 2026

    Appeal Period: Completed

  2. June 26, 2026

    Review Complete: Completed

  3. June 26, 2026

    Front Desk Planning: No Review Required

  4. June 26, 2026

    Current Planning: Complete

  5. June 22, 2026

    Assign Reviewers: Completed

  6. June 11, 2026

    Review Complete: Corrections Required

  7. June 1, 2026

    Assign Reviewers: Completed

  8. May 19, 2026

    Review Complete: Corrections Required

  9. May 5, 2026

    Assign Reviewers: Completed

  10. April 30, 2026

    Fee Payment: Payment Received

  11. April 30, 2026

    Prescreen Review: Passed

  12. April 29, 2026

    Prescreen Review: In Progress

  13. April 27, 2026

    Prescreen Review: Corrections Required

  14. April 27, 2026

    Prescreen Review: In Progress

  15. April 27, 2026

    Application Submittal: ePlanReview

  16. April 27, 2026

    Application filed

Documents

Site plans

  • Site plan for a zoning certificate showing an accessory dwelling unit, utility and water line replacement, setbacks, and related site features.

    June 1, 2026 · 1 page · 688 KB · PDS-Maps and Drawings

    Download Site plan, version 2
  • Sheet A100 showing existing site conditions and items to be demolished, removed, or relocated, including walkways, stairs, a concrete pad, a fence, and an AC unit.

    May 7, 2026 · 1 page · 325 KB · PDS-Maps and Drawings

    Download Existing site plan and demolition plan
  • Site plan for a zoning certificate showing the existing house, a new garage with accessory dwelling unit, water line replacement, setbacks, and utility and landscape features.

    May 7, 2026 · 1 page · 864 KB · PDS-Maps and Drawings

    Download Proposed site plan

Plans

  • Ground floor plan for the accessory dwelling unit and garage, with general notes and gross square footage figures (ADU 613 SF, garage 572 SF).

    June 22, 2026 · 1 page · 356 KB · PDS-Maps and Drawings

    Download Ground floor plan, version 2
  • Elevation drawing sheet showing exterior material legend (roofing, siding, windows, concrete, stained cedar) with general construction notes; text is partly garbled from extraction.

    June 22, 2026 · 1 page · 537 KB · PDS-Maps and Drawings

    Download North and east exterior elevations, version 2
  • Revised exterior elevation drawing with a material legend (roofing, siding, windows, concrete, cedar) and general construction notes.

    June 22, 2026 · 1 page · 510 KB · PDS-Maps and Drawings

    Download Exterior elevations, version 2
  • Floor plan sheet A-202 at 1/8" scale with general notes and gross area tallies: 613 SF conditioned ADU, 572 SF garage, 1,199 SF total building.

    June 22, 2026 · 2 pages · 501 KB · PDS-Maps and Drawings

    Download Upper floor plan, version 2
  • Floor plan sheet A-201 at 1/8 inch scale showing the first floor layout, with general construction notes and gross square footage totals for the ADU and garage.

    May 7, 2026 · 1 page · 338 KB · PDS-Maps and Drawings

    Download First floor plan
  • Floor plan sheet A-202 at 1/8" scale, with general notes and area totals showing a 600 SF conditioned ADU and a 599 SF garage on a 1,199 SF total footprint.

    May 7, 2026 · 1 page · 463 KB · PDS-Maps and Drawings

    Download Second floor plan
  • Elevation drawings with an exterior material legend (metal roofing, cedar siding, painted metal, concrete) and general construction notes for the zoning certificate.

    May 7, 2026 · 1 page · 517 KB · PDS-Maps and Drawings

    Download Exterior elevations and material legend
  • Exterior material legend and general construction notes for the building elevations, listing siding, roofing, window and trim finishes in charcoal grey and stained cedar.

    May 7, 2026 · 1 page · 529 KB · PDS-Maps and Drawings

    Download Exterior elevations and material legend

Project narrative

  • Letter describing a proposed two-story ADU with a two-car garage and a one-bedroom unit above, plus upgrades to the existing home, including new siding, a deck and utility lines.

    May 7, 2026 · 1 page · 910 KB · PDS-Letter of Intent

    Download Letter of intent for accessory dwelling unit with garage

Decisions

Notices

  • Planning and Development Services notice that the project was reviewed and approved as following the Boise City Zoning Ordinance, for a detached accessory dwelling unit and a large accessory structure.

    June 24, 2026 · 2 pages · 667 KB · PDS-Legal Notice

    Download Notice of approval for zoning certificate

Application

Photos

Correspondence

  • Boise Parks and Recreation has no comments but recommends planting one or two new deciduous trees on the site to strengthen the urban canopy.

    June 2, 2026 · 1 page · 72 KB · PDS-Agency Comments

    Download Boise Parks and Recreation comments
  • Fire Department recommends approval, conditioned on a heat detector interconnected with ADU smoke alarms and on hydrants and access being in place before construction.

    June 2, 2026 · 1 page · 194 KB · PDS-Agency Comments

    Download Boise Fire Department comments
  • Public Works says the property must connect to the central sanitary sewer, which is available in the adjacent alley, and sewer capacity fees may apply at building permit issuance.

    June 2, 2026 · 1 page · 65 KB · PDS-Agency Comments

    Download Public Works sewer comments
  • Agency correspondence on the zoning certificate application; the extracted text is largely garbled, so the specific comments cannot be read.

    June 2, 2026 · 1 page · 109 KB · PDS-Agency Comments

    Download Agency comments
  • Veolia Water Idaho reports system pressure and flow at a nearby hydrant for fire sprinkler design, with the note that Fire Department will determine adequacy.

    May 7, 2026 · 1 page · 113 KB · PDS-Other Small Docs

    Download Water utility fire flow availability form

Other documents

  • Noticing radius map

    June 24, 2026 · 509 KB · PDS-Maps and Drawings

  • Transmittal sheet

    May 19, 2026 · 137 KB · PDS-Transmittal Agencies

  • Statement of legal interest

    May 7, 2026 · 108 KB · PDS-Statement of Legal Interest

  • Receipt

    April 30, 2026 · 135 KB · PDS-Receipts

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