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Conversion of detached office into accessory dwelling unit approved

The city approved turning an existing 432-square-foot detached office into an accessory dwelling unit on a lot with a house. The work is interior only, with no exterior changes or parking changes proposed. The approval was issued Oct. 13.

ApprovedPLN26-00505Filed May 26, 2026Hillcrest · 2618 S Hayden Way+1 related filing
Site plan for Conversion of detached office into accessory dwelling unit approved
Site plan from the application documents.
Pin at the reported location; the shaded outline is the primary parcel (Ada County).

About this application

ADU

Project name on file: 2618 S HAYDEN WAY - ADU

Timeline

  1. Yesterday

    Status changed from Submitted to Approved

    Reported as “Project Entitled”.

  2. Two days ago

    Approved

  3. Aug. 14, 2026

    Planning Applications: Project Entitled

  4. July 16, 2026

    Pending Application Submittal: Planning Applications in Review

  5. June 3, 2026

    Concept Review Complete: CR Complete - Type 2

  6. May 26, 2026

    Application Submittal: Online

  7. May 26, 2026

    Application filed

Documents

Site plans

  • Site plan showing a 432 sq ft accessory dwelling unit footprint beside the existing house, with a utility area and property line marked.

    May 26, 2026 · 1 page · 172 KB · PDS-Other Small Docs

    Download ADU site plan
  • Site plan showing the existing exterior office structure, about 432 square feet in footprint, proposed for conversion to an accessory dwelling unit, with the existing house remaining.

    May 26, 2026 · 1 page · 172 KB · PDS-Other Small Docs

    Download Existing site plan for office-to-ADU conversion

Plans

  • Accessory dwelling unit floor plan showing windows, crawl space access and stove; the note says the shower is missing from the plan though it was permitted in April 2026.

    May 26, 2026 · 1 page · 168 KB · PDS-Other Small Docs

    Download ADU floor plan with missing shower

Project narrative

  • Advisory concept review notes for converting an existing detached office into an accessory dwelling unit, with no exterior or parking changes, and a zoning certificate required.

    June 3, 2026 · 1 page · 465 KB · PDS-Concept Review Summary Report

    Download Concept review summary for ADU conversion

Application

Nearby

Zoning certificate · Planning application

Zoning certificate

ApprovedFiled Oct. 1, 2025CZC25-00216Hillcrest · 4000 W Greenbrier Dr810 ft away+1 related filing

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