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Zoning certificate · Planning application

City approves 480-square-foot detached unit beside new home

Blake Wolf plans a detached accessory dwelling unit of about 480 square feet alongside a planned 1,272-square-foot single-family home. The city administratively approved the zoning certificate on Jan. 16, and appeals to the Hearing Examiner were due by Jan. 26.

ApprovedCZC25-00255Filed Dec. 2, 2025West Boise · 9577 W Irving St+1 related filing
Site plan for City approves 480-square-foot detached unit beside new home
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

Blake Wolf proposes a detached accessory dwelling unit of about 480 square feet at 9577 W Irving Street in Boise, built beside a planned single-family home of about 1,272 square feet in the R-1C residential zone. The city administratively approved the zoning certificate on January 16, 2026, and appeals to the Hearing Examiner were due by January 26, 2026.

Detached ADU

Project name on file: 9577 W IRVING ST - ADU

Timeline

  1. Jan. 27, 2026

    Appeal Period: Completed

  2. Jan. 16, 2026

    Review Complete: Completed

  3. Jan. 16, 2026

    Current Planning: Notes

  4. Jan. 16, 2026

    Current Planning: Complete

  5. Dec. 30, 2025

    Current Planning: In Review

  6. Dec. 30, 2025

    Assign Reviewers: Completed

  7. Dec. 22, 2025

    Review Complete: Corrections Required

  8. Dec. 22, 2025

    Current Planning: Corrections Required

  9. Dec. 11, 2025

    Current Planning: In Review

  10. Dec. 11, 2025

    Assign Reviewers: Completed

  11. Dec. 4, 2025

    Fee Payment: Payment Received

  12. Dec. 4, 2025

    Prescreen Review: Passed

  13. Dec. 3, 2025

    Prescreen Review: In Progress

  14. Dec. 2, 2025

    Prescreen Review: Corrections Required

  15. Dec. 2, 2025

    Prescreen Review: In Progress

  16. Dec. 2, 2025

    Application Submittal: ePlanReview

  17. Dec. 2, 2025

    Application filed

Documents

Site plans

  • Energy code compliance table for insulation and fenestration by climate zone, plus the adopted building codes and climatic design criteria (snow, wind, seismic, weathering) for the project.

    Dec. 16, 2025 · 1 page · 4.0 MB · PDS-Maps and Drawings

    Download Prescriptive energy compliance and building code criteria

Plans

  • Revised plan sheets for a new accessory dwelling unit, showing foundation notes, wall and joist framing, room dimensions, and a door and opening schedule.

    Feb. 9, 2026 · 1 page · 609 KB · PDS-Maps and Drawings

    Download Revised floor and foundation plans, ADU
  • Permit-set architectural sheets for a new accessory dwelling unit, showing front, rear, left and right elevations, wall bracing methods, a bracing plan, and wall and soffit details.

    Dec. 16, 2025 · 1 page · 2.0 MB · PDS-Maps and Drawings

    Download ADU elevations and bracing plans
  • Floor plan for a new accessory dwelling unit, with foundation and wall notes, door and opening schedule, and a crawlspace and garage layout, filed under a zoning certificate.

    Dec. 16, 2025 · 1 page · 603 KB · PDS-Maps and Drawings

    Download ADU floor plan
  • Foundation and framing plan sheet S-102 for a new single-family home, with wall notes, footing and post details, and room dimensions.

    Dec. 16, 2025 · 1 page · 594 KB · PDS-Maps and Drawings

    Download Foundation floor plan
  • Landscape plan for a new single-family home showing fencing, planting, turf and irrigation notes, drawn by the project's landscape designer, dated Nov. 25, 2025.

    Dec. 16, 2025 · 1 page · 776 KB · PDS-Maps and Drawings

    Download Landscape plan, sheet L-1
  • Exterior elevation drawings for a new single family home, showing the front (east) and left (south) sides, dated Nov. 25, 2025 as a permit submittal set.

    Dec. 16, 2025 · 1 page · 620 KB · PDS-Maps and Drawings

    Download Front and left elevations, sheet A-201
  • Single-family dwelling plan pages listing 2018 IECC prescriptive insulation and fenestration values and currently adopted building codes with climatic and geographic design criteria.

    Dec. 16, 2025 · 10 pages · 9.7 MB · PDS-Maps and Drawings

    Download Prescriptive energy compliance and climate design criteria sheets

Project narrative

  • Letter from Wolf Building Company LLC describing plans to build a new single family home and a detached ADU at once, with work expected January through April 2026.

    Dec. 16, 2025 · 1 page · 33 KB · PDS-Letter of Intent

    Download Letter of intent for new home and detached ADU

Decisions

  • Planning department letter approving a detached accessory dwelling unit under zoning code findings, with a condition limiting the ADU's size to the primary building's floor area.

    Jan. 21, 2026 · 8 pages · 226 KB · PDS-Action Letter

    Download Administrative approval letter for accessory dwelling unit

Notices

Application

Photos

Correspondence

  • ACHD finds no adjacent street improvements required and lists conditions on traffic impact fees, driveway approaches, right-of-way permits and standard conditions of approval.

    Jan. 21, 2026 · 3 pages · 181 KB · PDS-Agency Comments

    Download Ada County Highway District comments
  • Revised Fire Department review for an ADU zoning certificate, listing hydrant spacing, turnaround, access road width, turning radius and surface load requirements, with conditions for approval.

    Jan. 21, 2026 · 2 pages · 193 KB · PDS-Agency Comments

    Download Boise Fire Department comments, revised
  • Parks and Recreation reviewed the application with Community Forestry and has no comments or recommendations.

    Jan. 21, 2026 · 1 page · 57 KB · PDS-Agency Comments

    Download Boise Parks and Recreation comments
  • Public Works requires connection to the central sanitary sewer upon development, notes possible sewer capacity fees at building permit, and requires sewer plan approval.

    Jan. 21, 2026 · 1 page · 41 KB · PDS-Agency Comments

    Download Public Works sewer comments
  • Veolia states the project site can be served with water under its current tariffs, noting new domestic services are needed and the letter expires after twelve months.

    Dec. 16, 2025 · 1 page · 311 KB · PDS-Other Small Docs

    Download Veolia water serviceability letter

Other documents

  • Noticing radius map

    Jan. 14, 2026 · 594 KB · PDS-Maps and Drawings

  • Transmittal to review agencies

    Dec. 17, 2025 · 99 KB · PDS-Transmittal Agencies

  • Statement of legal interest

    Dec. 16, 2025 · 143 KB · PDS-Statement of Legal Interest

  • Receipt

    Dec. 4, 2025 · 135 KB · PDS-Receipts

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