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Attached accessory dwelling unit approved in existing single-family house

The city approved dividing a 926-square-foot house into a 549-square-foot main home and a 377-square-foot attached unit. A sidewalk from the new unit's door to the street is required. The decision was made Sept. 4.

ApprovedPLN26-00583Filed June 15, 2026Southeast Boise · 225 E Melrose St+1 related filing
Site plan for Attached accessory dwelling unit approved in existing single-family house
Site plan from the application documents.
Pin at the reported location; the shaded outline is the primary parcel (Ada County).

About this application

Proposed attached ADU to SFD

Project name on file: 225 E MELROSE ST - CZC (ADU)

Timeline

  1. Sept. 4, 2026

    Planning Applications: Project Entitled

  2. July 26, 2026

    Pending Application Submittal: Planning Applications in Review

  3. July 21, 2026

    Concept Review Complete: CR Complete - Type 2

  4. June 22, 2026

    Concept Review Complete: Corrections Required

    6-22-26 After discussion, applicant is seeking to apply for an attached ADU. Applicant will work to draft new floorplan to comply with size requirements and submit that with a new scope of work.

  5. June 15, 2026

    Application Submittal: Online

  6. June 15, 2026

    Application filed

Documents

Site plans

  • One-page site plan showing the existing garage and driveway, a planned walkway, and the ADU and main unit with dimensioned boundaries.

    July 17, 2026 · 1 page · 12 KB · PDS-Maps and Drawings

    Download Site plan

Plans

  • Floor plan of a house split into a front unit of 549 sq ft and a back unit of 377 sq ft, totaling 926 sq ft, with shower, sink, toilet and washer/dryer locations marked.

    July 17, 2026 · 1 page · 14 KB · PDS-Maps and Drawings

    Download Floor plan, front and back units

Project narrative

  • Planning staff summary of a concept review for converting part of an existing single-family home into an attached ADU, noting a required sidewalk to the street and existing parking.

    July 21, 2026 · 1 page · 453 KB · PDS-Concept Review Summary Report

    Download Concept review summary report

Application

  • Application for planning review of a single-family lot proposing up to three units, with later plans to split the lot and add an ADU or THOW.

    June 15, 2026 · 2 pages · 158 KB · PDS-Application

    Download Planning project application form

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