Planning project · Planning application
New single-family home with 3-car garage approved on hillside lot
The city approved a plan on Aug. 18 for one house on a 0.4-acre lot in the Hillside Overlay. Because of slope and unstable soils, the project needs a geotechnical report and drainage plans during further review.

About this application
New single-family home in the Hillside Overlay
Project name on file: 4537 N ACCIPITER WAY
Timeline
Aug. 18, 2026
Planning Applications: Project Entitled
July 7, 2026
Pending Application Submittal: Planning Applications in Review
June 1, 2026
Concept Review Complete: CR Complete - Type 2
May 29, 2026
Concept Review Complete: Engineering Preview
May 29, 2026
Concept Review Complete: Engineering Preview Complete
Based on submitted documents and limited overview of the property, a determination has been made that this project will be a Category II Hillside project due to slope, erosion-prone soils, unstable soils, earth movement, and other geologic and hydrologic hazards. In addition to the already submitted documents, additional documents may be required during the CFH Review process.Additional documents that you can expect to provide will be a site-specific geotechnical report with the possibility of a global slope stability analysis (please see the Agency Comment for Hillside Retaining Wall Permitting within this PLN); structural calculations for any retaining wall system that is greater than four feet in height from top of foundation to top of wall, that has more than one wall when the interior horizontal distance between the walls is less than 10 feet and the total height of all walls exceeds four feet, that has a surcharge, that has a backslope greater than three feet horizontal to one foot vertical, or that has structural components (these requirements will be assessed again at the time of occupancy); and civil plans. Please refer to the Hillside Development Requirements for Technical Reports for grading & drainage plan and geotechnical report requirements.A subgrade inspection by a geotechnical firm will be required at the time of construction once the subgrade is exposed and prior to placement of foundation materials or forms/rebar. A report of the inspection will need to be submitted to and accepted by PW Hillside (HillsideDrainage@cityofboise.org) before scheduling your inspection with the Building Department and receiving final occupancy.NOTE: The hazards of developing and building on a property, especially in the Boise foothills, are well known. It is the responsibility of the applicant/owner’s design, geological, and engineering professionals, not the City, to identify, address, and mitigate any hazards to the site. Satisfying these Conditions of Approval is for limited [City purpose] only and should not be relied on for design, geological or engineering purposes. Developer will comply with all requirements of Boise City Hillside Development Code Sections or submit evidence satisfactory to the Boise City Engineer that the proposed development is exempt from the requirements therein stated due to location, topography and/or the absence of adverse conditions associated with slope stability, ground water, erosion and sedimentation.If you would like to discuss this determination, please contact us at HillsideDrainage@cityofboise.org or we can set up a meeting if you prefer.
May 28, 2026
Application Submittal: Online
May 28, 2026
Application filed
Documents
Site plans
- Download Preliminary site plan with energy code insulation table
Single-page preliminary site plan for a residence showing 2018 IRC insulation and fenestration requirements, with notes and builder contact information.
May 28, 2026 · 1 page · 2.1 MB · PDS-Other Small Docs
Project narrative
- Download Concept review summary for single-family home in hillside
Advisory concept review notes covering a Category II hillside designation, parking and driveway limits, a pool prohibition, and expected geotechnical and retaining wall documentation.
June 1, 2026 · 2 pages · 469 KB · PDS-Concept Review Summary Report
Application
- Download Planning project application form
Application for a single-family primary residence in the R-1A zone, with a required Hillside Questionnaire referenced.
May 28, 2026 · 2 pages · 158 KB · PDS-Application
Other documents
- PDS-Agency Comments - HILLSIDE RETAINING WALL PERMITTING_OCTOBER2025
May 29, 2026 · 804 KB · PDS-Agency Comments
- PDS-Other Small Docs - HILLSIDE QUESTIONNAIRE FORM
May 28, 2026 · 672 KB · PDS-Other Small Docs
- PDS-Other Small Docs - LETTER OF EXPLANATION
May 28, 2026 · 72 KB · PDS-Other Small Docs