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749-square-foot attached accessory dwelling unit approved for single-family home

The city approved plans on Oct. 13 for a single-story attached unit beside an existing house, meant for visiting extended family. No changes to parking are proposed, and the review was handled administratively.

ApprovedPLN26-00373Filed April 20, 2026Southwest Boise · 2551 S Sumpter Way+1 related filing
Site plan for 749-square-foot attached accessory dwelling unit approved for single-family home
Site plan from the application documents.
Pin at the reported location; the shaded outline is the primary parcel (Ada County).

About this application

749SF attached ADU

Project name on file: 2551 S SUMPTER WAY - CZC (ADU)

Timeline

  1. Yesterday

    Status changed from In review to Approved

    Reported as “Project Entitled”.

  2. Two days ago

    Approved

  3. Aug. 14, 2026

    Planning Applications: Project Entitled

  4. April 27, 2026

    Pending Application Submittal: Planning Applications in Review

  5. April 27, 2026

    Concept Review Complete: CR Complete - Type 2

  6. April 20, 2026

    Application Submittal: Online

  7. April 20, 2026

    Application filed

Documents

Site plans

  • Site plan showing the existing main residence and a proposed 749 sq ft accessory dwelling unit (ADU), with property lines and zoning R-1A noted.

    April 20, 2026 · 1 page · 750 KB · PDS-Other Small Docs

    Download Proposed site plan

Plans

  • Floor plan at 1/4 inch scale showing a 749 square foot proposed ADU with bedroom, bath, kitchen, dining, living area, utility closet and flex space.

    April 20, 2026 · 1 page · 466 KB · PDS-Other Small Docs

    Download Proposed floor plan for accessory dwelling unit

Project narrative

  • Planner's advisory notes on a proposed 749 sq ft attached accessory dwelling unit, covering setbacks, front door placement, sidewalk design and floodplain status.

    May 5, 2026 · 2 pages · 465 KB · PDS-Concept Review Summary Report

    Download Concept review summary for accessory dwelling unit
  • Planner's advisory summary of a proposed 749 sq ft attached ADU, covering setbacks, front door placement, sidewalk design, and floodplain status.

    April 27, 2026 · 2 pages · 465 KB · PDS-Concept Review Summary Report

    Download Concept review summary for attached accessory dwelling unit
  • Narrative describing a 749 sq ft single-story attached ADU for extended family, with no added parking, one fence removed, and no trees removed.

    April 20, 2026 · 1 page · 159 KB · PDS-Other Small Docs

    Download Project description for attached accessory dwelling unit

Application

  • Application for an attached accessory dwelling unit (ADU) intended for family visits, filed by the applicant on behalf of the property owner in the R-1A zone.

    April 20, 2026 · 2 pages · 158 KB · PDS-Application

    Download Planning project application form

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