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Zoning certificate · Planning application

Two-story garage with 882-square-foot apartment approved in Boise backyard

The city approved a 1,800-square-foot building behind an existing home, with a ground-floor garage and a two-bedroom accessory dwelling unit upstairs, standing about 26 feet tall. Conditions include no commercial use, a paved path at least five feet wide to the unit's entrance, and limited construction hours.

ApprovedCZC25-00280Filed Jan. 1, 2026Depot Bench · 3115 W Teton St+1 related filing
Site plan for Two-story garage with 882-square-foot apartment approved in Boise backyard
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 in the rear yard of an existing single-family home at 3115 W Teton Street. The 1,800 square foot structure has a garage on the ground floor and an approximately 882 square foot, two-bedroom accessory dwelling unit upstairs. It would stand about 26 feet tall.

Detached ADU and garage

Project name on file: 3115 W TETON ST - ADU

Timeline

  1. March 28, 2026

    Appeal Period: Completed

  2. March 17, 2026

    Review Complete: Completed

  3. March 17, 2026

    Current Planning: Complete

  4. March 10, 2026

    Current Planning: In Review

  5. March 10, 2026

    Assign Reviewers: Completed

  6. Feb. 27, 2026

    Review Complete: Corrections Required

  7. Feb. 27, 2026

    Current Planning: Corrections Required

  8. Feb. 25, 2026

    Current Planning: Corrections Required

  9. Feb. 25, 2026

    Current Planning: In Review

  10. Feb. 25, 2026

    Assign Reviewers: Completed

  11. Feb. 17, 2026

    Review Complete: Corrections Required

  12. Feb. 5, 2026

    Current Planning: Corrections Required

  13. Jan. 30, 2026

    Current Planning: In Review

  14. Jan. 30, 2026

    Assign Reviewers: Completed

  15. Jan. 24, 2026

    Fee Payment: Payment Received

  16. Jan. 5, 2026

    Prescreen Review: Passed

  17. Jan. 4, 2026

    Prescreen Review: In Progress

  18. Jan. 1, 2026

    Application Submittal: ePlanReview

  19. Jan. 1, 2026

    Application filed

Documents

Site plans

  • Cover sheet with sheet index, vicinity map, and general project notes for the architectural drawing set, prepared by Dean's Drafting & Design LLC.

    March 4, 2026 · 1 page · 1.3 MB · PDS-Maps and Drawings

    Download Cover sheet and site plan

Plans

  • General construction notes covering wall and ceiling assemblies, floor finishes, door jambs, blocking, cabinetry and fixture coordination with the owner.

    March 4, 2026 · 11 pages · 2.5 MB · PDS-Maps and Drawings

    Download Building plans general notes
  • Building elevation sheet with general notes and a materials schedule covering roofing, brick veneer, concrete, fiber-cement siding and trim, and metal guardrail finishes.

    March 4, 2026 · 2 pages · 1.3 MB · PDS-Maps and Drawings

    Download Elevations with materials and finishes notes
  • Architectural ground floor plan sheet with general construction notes on floor and ceiling finishes, wall assemblies, blocking, and cabinetry coordination with the owner.

    March 4, 2026 · 1 page · 1.2 MB · PDS-Maps and Drawings

    Download Ground floor plan with general notes
  • Continuation of the general construction notes covering fasteners, wood framing code references, vapor retarders, air barriers, cleanup, smoking restrictions, and warranty turnover.

    March 4, 2026 · 1 page · 1.4 MB · PDS-Maps and Drawings

    Download General project notes (continued)
  • Upper level floor plan for a zoning certificate, with general notes on ceiling heights, wall and door assemblies, floor and ceiling finishes, blocking, and cabinetry coordination.

    March 4, 2026 · 1 page · 1.3 MB · PDS-Maps and Drawings

    Download Upper floor plan with general notes

Project narrative

  • Narrative describing a two-story detached garage with accessory dwelling unit, its floor areas, materials, parking, and plans to preserve a mature Bur Oak tree.

    March 4, 2026 · 1 page · 47 KB · PDS-Letter of Intent

    Download Letter of explanation for detached garage and ADU

Decisions

Notices

  • City of Boise staff approved a zoning certificate for a detached accessory structure over 1,000 square feet and a second-story accessory dwelling unit, with appeals due by March 27, 2026.

    March 13, 2026 · 2 pages · 1.2 MB · PDS-Legal Notice

    Download Notice of approval for zoning certificate

Application

  • Zoning certificate application for a detached accessory dwelling unit and garage, 1,800 sq ft ADU with two bedrooms, filed by the applicant's contractor company.

    Jan. 1, 2026 · 3 pages · 205 KB · PDS-Application

    Download Zoning certificate application for accessory dwelling unit

Photos

  • Two pages of site photographs taken Oct. 2025 showing the front entry, driveway, and rear property line from several viewpoints, prepared by Dean's Drafting & Design LLC.

    March 4, 2026 · 2 pages · 635 KB · PDS-Photos

    Download Site photos of the property

Correspondence

  • ACHD reports no required street improvements and lists traffic impact fee, driveway approach, right-of-way permit and standard conditions for the accessory dwelling unit application.

    March 17, 2026 · 3 pages · 181 KB · PDS-Agency Comments

    Download Ada County Highway District comments
  • Fire Department approves the ADU request as proposed, requiring a heat detector in the attached garage interconnected with the unit's smoke detectors.

    March 17, 2026 · 1 page · 184 KB · PDS-Agency Comments

    Download Boise Fire Department comments
  • Parks and Community Forestry review finds no comments, noting existing mature trees and landscaping will be retained and protected.

    March 17, 2026 · 1 page · 222 KB · PDS-Agency Comments

    Download Boise Parks and Recreation comments
  • Public Works states the property must connect to central sanitary sewer, and that sewer capacity fees may be due at building permit issuance.

    March 17, 2026 · 1 page · 65 KB · PDS-Agency Comments

    Download Public Works sewer comments
  • Veolia Water requires a separate water service line and meter for the new ADU structure and asks that a site plan be submitted for review and approval.

    March 17, 2026 · 1 page · 385 KB · PDS-Agency Comments

    Download Veolia Water Idaho comments on water service
  • Veolia Water Idaho reports water pressure and flow available at the site's nearby hydrant under maximum-day conditions, for fire sprinkler design.

    March 4, 2026 · 1 page · 131 KB · PDS-Agency Comments

    Download Veolia fire flow information

Other documents

  • Noticing radius map

    March 13, 2026 · 547 KB · PDS-Maps and Drawings

  • Transmittal to review agencies

    March 5, 2026 · 136 KB · PDS-Transmittal Agencies

  • Statement of legal interest

    March 4, 2026 · 504 KB · PDS-Statement of Legal Interest

  • Receipt

    Jan. 24, 2026 · 135 KB · PDS-Receipts

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