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Planning project · Planning application

Single-family home on foothills hillside lot approved

City staff approved a single-family home on a 0.23-acre lot in the Hillside Overlay on Oct. 16. Because of steep slopes and unstable soils, the project needed hillside review, including soils testing and a geotechnical report.

ApprovedPLN26-00296Filed March 26, 2026Warm Springs Mesa · 3603 E Asteroid Ct+1 related filing
Site plan for Single-family home on foothills hillside lot approved
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

Single-family home in Hillside Overlay

Project name on file: 3603 E ASTEROID CT

Timeline

  1. Yesterday

    Status changed from In review to Approved

    Reported as “Project Entitled”.

  2. Two days ago

    Approved

  3. Sept. 18, 2026

    Planning Applications: Project Entitled

  4. April 9, 2026

    Pending Application Submittal: Planning Applications in Review

  5. April 1, 2026

    Concept Review Complete: CR Complete - Type 2

  6. March 30, 2026

    Concept Review Complete: Engineering Preview

  7. March 30, 2026

    Concept Review Complete: Engineering Preview Complete

    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 that is greater than four feet of height, more than one retaining wall when the horizontal interior distance between the retaining walls is less than 10 feet and the total of all retaining walls exceeds four feet in height, a retaining wall having a surcharge, having 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.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.

  8. March 26, 2026

    Application Submittal: Online

  9. March 26, 2026

    Application filed

Documents

Site plans

  • Site plan for a Boulder Point lot showing a proposed Telluride residence, with sheet notes on driveway slope, final grading, drainage away from neighboring property, retaining walls, and sewer lateral.

    March 26, 2026 · 1 page · 316 KB · PDS-Other Small Docs

    Download Site plan for residential lot with grading and drainage notes

Project narrative

  • Advisory concept review summary for a single-family home in the Hillside Overlay, classed as a Category II Hillside project with geotechnical and retaining wall requirements.

    April 1, 2026 · 2 pages · 465 KB · PDS-Concept Review Summary Report

    Download Concept review summary

Application

  • Application for a single-family residence in the A-1 zone, with a required Hillside Questionnaire referenced and the applicant's signed certification.

    March 26, 2026 · 2 pages · 158 KB · PDS-Application

    Download Planning project application form
  • Public Works questionnaire answering project scope items such as new dwelling, grading over 12 inches and retaining walls, with the property address and case number left blank.

    March 26, 2026 · 1 page · 672 KB · PDS-Other Small Docs

    Download Hillside project questionnaire

Studies and reports

  • Soils testing from two test pits on the residential lot finds bedrock, expansive fat clay, and foundation and flatwork recommendations, concluding the lot is acceptable for construction.

    March 26, 2026 · 17 pages · 1.1 MB · PDS-Other Small Docs

    Download Geotechnical recommendation report

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.

    March 30, 2026 · 5 pages · 804 KB · PDS-Agency Comments

    Download Hillside retaining wall permitting guidance

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