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Historic Preservation Commission approves detached backyard unit replacing garage

The approval covers demolishing a detached garage off the alley and building a roughly 450-square-foot accessory dwelling with a new parking pad. The commission decided the case on Oct. 13; a separate zoning review is also required.

ApprovedPLN25-01065Filed Dec. 3, 2025North End · 404 W Thatcher St+4 related filings
Site plan for Historic Preservation Commission approves detached backyard unit replacing garage
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

ADU

Project name on file: 404 W THATCHER ST

Timeline

  1. Oct. 13, 2026

    6 documents added

  2. Oct. 13, 2026

    Status changed from In review to Approved

    Reported as “Project Entitled”.

  3. Oct. 13, 2026

    Approved

  4. Aug. 28, 2026

    Planning Applications: Project Entitled

  5. July 8, 2026

    Planning Applications: Generate Additional Application

  6. July 8, 2026

    Pending Application Submittal: Planning Applications in Review

  7. March 3, 2026

    Pending Application Submittal: Planning Applications in Review

  8. Feb. 27, 2026

    IDR Review Complete: IDR Waived

  9. Feb. 27, 2026

    Neighborhood Meeting Review: Completed

  10. Jan. 9, 2026

    Concept Review Complete: CR Complete - Type 3

  11. Dec. 3, 2025

    Application Submittal: Online

  12. Dec. 3, 2025

    Application filed

Documents

Site plans

  • Summary of the applicant's neighborhood meeting for a detached ADU, listing drawings shared, attendee count, and neighbor feedback on hardscaping, lighting, runoff, and tree retention.

    Feb. 27, 2026 · 16 pages · 5.8 MB · PDS-Other Small Docs

    Download Neighborhood meeting summary form
  • Schematic site plan showing a proposed 450 sq ft detached accessory dwelling unit, with setbacks, height and parking notes for the lot.

    Dec. 3, 2025 · 1 page · 110 KB · PDS-Other Small Docs

    Download Schematic site plan, option A
  • Schematic site plan for a 450 sq ft detached accessory dwelling unit, showing setbacks, a demolished garage replaced by off-street parking, and proposed patio and porch.

    Dec. 3, 2025 · 1 page · 111 KB · PDS-Other Small Docs

    Download Schematic site plan, option B

Project narrative

  • Planner's advisory summary for a proposed detached ADU and demolition of an existing garage in a historic district, covering required applications, historic guidelines and ADU standards.

    Jan. 9, 2026 · 3 pages · 467 KB · PDS-Concept Review Summary Report

    Download Concept review summary report
  • Applicant's narrative asking whether a detached ADU and surface parking space are allowed on a historic-overlay lot, and noting a rear Elm tree may need removal.

    Dec. 3, 2025 · 1 page · 13 KB · PDS-Other Small Docs

    Download Project description letter

Application

  • Application from All Things CODE for a detached accessory dwelling unit in an R-1C zone, with the owner listed as Jonea Schillaci.

    Dec. 3, 2025 · 2 pages · 158 KB · PDS-Application

    Download Planning project application for a detached ADU

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