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Planning project · Planning application

Single-family home on foothills lot approved under hillside rules

City staff approved a new single-family house on a 0.28-acre lot in the hillside overlay on Sept. 11. The site is classed as a higher-risk hillside project, so geotechnical and grading reviews are expected before construction.

ApprovedPLN26-00380Filed April 21, 2026Central Foothills · 4516 N Accipiter Way+1 related filing
Site plan for Single-family home on foothills lot approved under hillside rules
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

SFD in the Hillside overlay

Project name on file: 4516 N ACCIPITER WAY

Timeline

  1. Sept. 11, 2026

    Planning Applications: Project Entitled

  2. June 3, 2026

    Pending Application Submittal: Planning Applications in Review

  3. April 23, 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 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.

  4. April 23, 2026

    Concept Review Complete: CR Complete - Type 2

  5. April 22, 2026

    Concept Review Complete: Engineering Preview

  6. April 21, 2026

    Application Submittal: Online

  7. April 21, 2026

    Application filed

Documents

Site plans

  • Plot plan with notes, legend, and energy compliance and foundation notes for a new custom home on a hillside lot, prepared by a building company.

    April 21, 2026 · 1 page · 1.6 MB · PDS-Other Small Docs

    Download Site plan for new custom home

Plans

  • Detail sheet with roof drain, foundation drain, and side yard drainage details, plus notes referring to the grading plan, drainage plans, and geotechnical report.

    May 11, 2026 · 1 page · 714 KB · PDS-Other Small Docs

    Download Grading and drainage construction details
  • Grading plan for a single-family residence lot, with grading legend, callout notes, drainage and subgrade inspection requirements, and proposed patio, driveway and boulder retaining wall.

    May 11, 2026 · 1 page · 724 KB · PDS-Other Small Docs

    Download Updated grading plan
  • Detail sheet with drainage notes and sections for roof drains, foundation drains, side yard drainage, and expansion joints, with references to the geotechnical report and drainage plans.

    April 21, 2026 · 1 page · 712 KB · PDS-Other Small Docs

    Download Grading and drainage construction details
  • Site grading plan with legend, general and drainage notes, inspection requirements, and callouts for patio, driveway, and boulder retaining wall on a single-family lot.

    April 21, 2026 · 1 page · 722 KB · PDS-Other Small Docs

    Download Grading plan

Project narrative

  • Planning staff's advisory concept review notes: project classed as a Category II Hillside project, requiring a geotechnical report, retaining wall calculations and civil plans, and a single driveway no wider than 30…

    April 23, 2026 · 2 pages · 468 KB · PDS-Concept Review Summary Report

    Download Concept review summary
  • Advisory concept review summary for a new single-family home in a hillside overlay, requiring a Category II Hillside application, a geotechnical report, and a single driveway no wider than 30 feet.

    April 23, 2026 · 2 pages · 468 KB · PDS-Concept Review Summary Report

    Download Concept review summary
  • Describes a proposed one-story, 3,272 sq. ft. single-family home with three bedrooms, 3.5 bathrooms, a covered patio and an attached garage, within a Hillside Development Overlay.

    April 21, 2026 · 1 page · 239 KB · PDS-Other Small Docs

    Download Project description

Application

  • Blank checklist required with building permit applications for new hillside residences, covering submittal methods, acceptance rules and instructions.

    May 11, 2026 · 7 pages · 337 KB · PDS-Other Small Docs

    Download Hillside new residential submittal checklist
  • Application for construction of a new 3,272 sq. ft. one-story single-family dwelling in the R-1A zone within a Hillside Development Overlay, with attached garage and covered patio.

    April 21, 2026 · 2 pages · 158 KB · PDS-Application

    Download Planning project application form
  • Checklist from Public Works asking whether the project involves new parcel lines, additions, dwellings, driveways, deep grading, or retaining walls over 4 feet.

    April 21, 2026 · 1 page · 70 KB · PDS-Other Small Docs

    Download Public Works hillside project questionnaire

Correspondence

  • Public Works guidance on when retaining walls in the hillside zone need a determination, slope stability analysis, and planning-code height and setback limits.

    April 23, 2026 · 5 pages · 804 KB · PDS-Agency Comments

    Download Hillside retaining wall permitting guidance

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