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Planning project · Planning application

Accessory dwelling unit approved for single-family lot

The city approved a zoning certificate on June 16 for one accessory dwelling unit alongside the existing house on a 0.32-acre lot. Staff reviewed it administratively, so no public hearing was held.

ApprovedPLN26-00394Filed April 27, 2026Southwest Boise · 2443 S Sumpter Way+1 related filing
Site plan for Accessory dwelling unit approved for single-family lot
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: 2443 S SUMPTER WAY - ADU

Timeline

  1. Oct. 14, 2026

    6 documents added

  2. June 16, 2026

    Planning Applications: Project Entitled

  3. May 14, 2026

    Pending Application Submittal: Planning Applications in Review

  4. May 13, 2026

    Concept Review Complete: CR Complete - Type 2

  5. May 5, 2026

    Concept Review Complete: Corrections Required

    Please see emails for corrections and suggested changes.

  6. April 27, 2026

    Application Submittal: Online

  7. April 27, 2026

    Application filed

Documents

Site plans

  • Site plan sheet S-1 showing an accessory dwelling unit alongside the existing residence and garage, dated 01/27/2026, at 1/8" = 1'-0" scale.

    May 8, 2026 · 1 page · 210 KB · PDS-Other Small Docs

    Download Site plan for new ADU
  • Site plan drawing (sheet S-1, scale 1/8 inch to 1 foot) showing the new accessory dwelling unit alongside the existing residence and garage.

    April 27, 2026 · 1 page · 206 KB · PDS-Other Small Docs

    Download Site plan for new ADU

Project narrative

  • Advisory concept review notes covering a sidewalk waiver, the no-additional-driveway condition, required Zoning Certificate, and ADU code requirements.

    May 13, 2026 · 2 pages · 469 KB · PDS-Concept Review Summary Report

    Download Concept review summary for accessory dwelling unit
  • A one-page site sheet from True Blue Construction marking where the new accessory dwelling unit will be placed, shown with cross hatching.

    May 8, 2026 · 1 page · 1.3 MB · PDS-Other Small Docs

    Download Project description and site sketch with new ADU location
  • Cover sheet for a construction set from True Blue Construction, marking the location of a new accessory dwelling unit (ADU) with cross hatching.

    April 27, 2026 · 1 page · 1.3 MB · PDS-Other Small Docs

    Download Cover page with project description

Application

  • Planning application for an accessory dwelling unit in an R-1A zone, intended for an elderly family member moving closer to family.

    April 27, 2026 · 2 pages · 158 KB · PDS-Application

    Download Accessory dwelling unit application form

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