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Garage loft conversion to accessory dwelling unit approved in historic district

The city approved converting the upper floor of a detached garage into an accessory dwelling unit, with a roof change and window replacement. The unit can be no larger than 900 square feet. Approval came Feb. 6 at the staff level.

ApprovedPLN25-00973Filed Nov. 5, 2025North End · 1808 N 15th St+2 related filings
Pin at the reported location; the shaded outline is the primary parcel (Ada County).

About this application

Internal conversion of an ADU in Historic and window replacement

Project name on file: 1808 N 15TH ST - ADU

Timeline

  1. Feb. 6, 2026

    Planning Applications: Project Entitled

  2. Dec. 2, 2025

    Pending Application Submittal: Planning Applications in Review

  3. Dec. 2, 2025

    Concept Review Complete: CR Complete - Type 2

  4. Nov. 19, 2025

    Concept Review Complete: Corrections Required

    • Please provide me with a basic Site Plan so I can see the setbacks of the ADU• Please provide me with a basic floor plan• What is the proposed square footage & height of the ADU

  5. Nov. 5, 2025

    Application Submittal: Online

  6. Nov. 5, 2025

    Application filed

Documents

Project narrative

  • Advisory summary from a Dec. 1, 2025 concept review covering conversion of a garage loft into an ADU, with setback, size, height and historic district requirements noted.

    Dec. 2, 2025 · 2 pages · 462 KB · PDS-Concept Review Summary Report

    Download Concept review summary for accessory dwelling unit conversion

Application

  • Application for an accessory dwelling unit in the R-1C zone, filed under a planning project record, with applicant and owner information and a signed certification.

    Nov. 5, 2025 · 2 pages · 158 KB · PDS-Application

    Download Planning project application for accessory dwelling unit

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