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Zoning certificate · Planning application

Two-story garage with 900-square-foot apartment approved behind existing house

The city approved a detached two-car garage with a two-bedroom accessory dwelling above it, in a 1,580-square-foot building. Conditions include a paved path to the entrance and keeping drainage on the property. The owner plans fire sprinklers.

ApprovedCZC26-00227Filed Aug. 21, 2026South Boise Village · 1911 S Manitou Ave+1 related filing
Site plan for Two-story garage with 900-square-foot apartment approved behind existing house
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 detached two-car garage with a two-bedroom, one-bathroom accessory dwelling unit in the rear yard of an existing single-family home at 1911 S Manitou Avenue. The 1,580 square foot building is two stories and 24 feet, four inches tall, and the apartment itself is 900 square feet.

ADU

Project name on file: 1911 S MANITOU AVE

Timeline

  1. Oct. 9, 2026

    Fire Department: Complete

  2. Oct. 9, 2026

    Review Complete: Completed

  3. Oct. 9, 2026

    Planning and Zoning: Complete

  4. Oct. 2, 2026

    Fire Department: In Review

  5. Oct. 2, 2026

    Planning and Zoning: In Review

  6. Oct. 2, 2026

    Assign Reviewers: Completed

  7. Sept. 28, 2026

    Review Complete: Corrections Required

  8. Sept. 28, 2026

    Planning and Zoning: Corrections Required

  9. Sept. 24, 2026

    Planning and Zoning: In Review

  10. Sept. 24, 2026

    Assign Reviewers: Completed

  11. Sept. 9, 2026

    Review Complete: Corrections Required

  12. Sept. 9, 2026

    Planning and Zoning: Corrections Required

  13. Aug. 31, 2026

    Planning and Zoning: In Review

  14. Aug. 31, 2026

    Assign Reviewers: Completed

  15. Aug. 25, 2026

    Fee Payment: Payment Received

  16. Aug. 25, 2026

    Prescreen Review: Passed

  17. Aug. 22, 2026

    Prescreen Review: In Progress

  18. Aug. 21, 2026

    Prescreen Review: Corrections Required

  19. Aug. 21, 2026

    Prescreen Review: In Progress

  20. Aug. 21, 2026

    Application Submittal: ePlanReview

    Updated missing fields

  21. Aug. 21, 2026

    Application filed

Documents

Site plans

  • Revised site plan drawn at 1 inch equals 10 feet, showing proposed shop, existing structure, setbacks and access to the existing dwelling.

    Sept. 25, 2026 · 1 page · 108 KB · PDS-Maps and Drawings

    Download Site plan, version 2
  • Site plan sheet A301 at 1" = 10'-0" showing a proposed shop, existing structure, setback dimensions, and a roofing contractor and designer credit block.

    Sept. 1, 2026 · 1 page · 107 KB · PDS-Maps and Drawings

    Download Site plan showing proposed shop and setbacks

Plans

  • Sheet A301 exterior elevation drawings dated 09/23/2026, showing front and south elevations with a materials list (standing seam metal roof, horizontal siding, corrugated metal wainscot) and window schedule notes.

    Sept. 25, 2026 · 3 pages · 1.1 MB · PDS-Maps and Drawings

    Download Exterior elevations, revision 2
  • Floor plans for the accessory dwelling unit with legend, notes, area schedule, and door and window schedules; includes garage and upper floor areas.

    Sept. 25, 2026 · 1 page · 196 KB · PDS-Maps and Drawings

    Download Floor plans, revision 2
  • Site drawing comparing current landscaping with proposed landscaping, including the planned ADU and patio layout.

    Sept. 25, 2026 · 1 page · 353 KB · PDS-Maps and Drawings

    Download Landscape plan, version 2
  • Elevation drawings dated 07/27/2026 showing front and south views with a materials list including standing seam metal roof, horizontal siding, corrugated metal wainscot, and concrete pad.

    Sept. 1, 2026 · 3 pages · 1.0 MB · PDS-Maps and Drawings

    Download Exterior elevations, sheet A301 (front and south)
  • Floor plan sheet with room layouts, area schedule, door and window schedules, and construction notes for a zoning certificate application.

    Sept. 1, 2026 · 2 pages · 250 KB · PDS-Maps and Drawings

    Download Floor plans
  • Two-page landscape comparison showing existing landscaping and proposed landscaping with an accessory dwelling unit added.

    Sept. 1, 2026 · 1 page · 354 KB · PDS-Maps and Drawings

    Download Landscape plan: current and with ADU

Project narrative

Decisions

Notices

  • Notice that a zoning certificate was approved for a two-car garage with an accessory dwelling unit larger than 1,000 square feet, with an appeal deadline of October 19, 2026.

    Oct. 7, 2026 · 2 pages · 779 KB · PDS-Legal Notice

    Download Notice of approval for zoning certificate

Application

  • Application form for a zoning certificate for an accessory dwelling unit in the R-1C zone, listing property, applicant and owner details and the submittal checklist.

    Aug. 21, 2026 · 3 pages · 202 KB · PDS-Application

    Download Zoning certificate application for accessory dwelling unit

Photos

  • Dated photographs of the front, side yards, backyard and accessory dwelling unit (ADU) structure on the property, taken August 25, 2026.

    Sept. 1, 2026 · 22 pages · 16.9 MB · PDS-Photos

    Download Site photos of house, yard and ADU structure

Correspondence

  • Letter stating intent to install a residential fire sprinkler system and an interconnected garage heat detector in the proposed accessory dwelling unit, responding to fire department comments.

    Oct. 7, 2026 · 1 page · 34 KB · PDS-Correspondence

    Download Fire comment response letter
  • Boise Fire Department cannot recommend approval yet, citing hydrant spacing, a 150-foot hose-reach access issue, and a heat detector requirement for the ADU garage.

    Oct. 5, 2026 · 2 pages · 219 KB · PDS-Agency Comments

    Download Fire Department agency comments
  • Revised Boise Fire Department comments on a detached garage with an attached ADU, covering hydrant spacing, fire apparatus access, sprinklers and a heat detector.

    Oct. 5, 2026 · 2 pages · 218 KB · PDS-Agency Comments

    Download Fire Department agency comments, revised
  • Public Works reviewer found no hillside or drainage conditions apply, and the project does not require a Stormwater Management Plan.

    Oct. 5, 2026 · 1 page · 134 KB · PDS-Agency Comments

    Download Hillside and drainage comments
  • Boise Parks and Recreation has no comments or recommendations on the proposal, as no existing mature trees appear to be affected.

    Oct. 5, 2026 · 1 page · 57 KB · PDS-Agency Comments

    Download Parks and Recreation Department agency comments
  • Public Works sewer comments requiring central sanitary sewer connection upon development, noting possible sewer capacity fees at building permit and conditions before final sewer plan approval.

    Oct. 5, 2026 · 1 page · 65 KB · PDS-Agency Comments

    Download Sewer agency comments
  • Veolia Water requires a separate water service line and meter for the new ADU building and asks for a site plan submittal for review before service is installed.

    Oct. 5, 2026 · 1 page · 440 KB · PDS-Agency Comments

    Download Veolia Water Idaho agency comments
  • ACHD finds no adjacent street improvements required and lists traffic impact fee, driveway approach, right-of-way permit, and standard conditions of approval.

    Sept. 17, 2026 · 3 pages · 160 KB · PDS-Agency Comments

    Download Ada County Highway District comments
  • Veolia Water Idaho letter to the Fire Flow Reviewing Authority giving available hydrant pressure and flow (45 PSI average demand; 1500 GPM at 20 PSI residual) for fire sprinkler design.

    Sept. 1, 2026 · 1 page · 112 KB · PDS-Other Small Docs

    Download Veolia water fire flow information

Other documents

  • Noticing radius map

    Oct. 7, 2026 · 514 KB · PDS-Maps and Drawings

  • Transmittal sheet

    Sept. 4, 2026 · 137 KB · PDS-Transmittal Agencies

  • Statement of legal interest

    Sept. 1, 2026 · 647 KB · PDS-Statement of Legal Interest

  • Receipt

    Aug. 25, 2026 · 131 KB · PDS-Receipts

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