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Planning project · Planning application

Single-family home proposed on nearly 1-acre hillside lot in Boise

The application seeks city review of a new house on a 0.94-acre lot with steep, erosion-prone soils. It needs a geotechnical report and grading and drainage plans, and staff will decide administratively.

In reviewPLN26-00545Filed June 4, 2026Warm Springs Mesa · 3262 E Birdsong Ct+1 related filing
Site plan for Single-family home proposed on nearly 1-acre hillside lot in Boise
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

CAT II Hillside

Project name on file: 3262 E BIRDSONG CT

Timeline

  1. June 18, 2026

    Pending Application Submittal: Planning Applications in Review

  2. June 15, 2026

    Concept Review Complete: CR Complete - Type 2

  3. June 12, 2026

    Concept Review Complete: Engineering Preview

  4. June 12, 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 (please submit them with subsequent applications), 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. Both the civil plans and the geotechnical report will need to address the potential of passthrough drainage and adhere to all subdivision constraints either on the plat or approved drawings and reports. 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.

  5. June 4, 2026

    Concept Review Complete: Engineering Preview

  6. June 4, 2026

    Application Submittal: Online

  7. June 4, 2026

    Application filed

Documents

Site plans

  • Architectural site plan sheet from the architect's set, with a sheet index listing architectural, structural, grading and electrical drawings, and wildland-urban interface roofing and eave notes.

    June 4, 2026 · 1 page · 1.8 MB · PDS-Other Small Docs

    Download Architectural site plan, sheet A1.0

Plans

  • Grading and drainage sheet with design notes on subgrade inspections, revisions to the approved grading plan, and final inspection before occupancy.

    June 4, 2026 · 1 page · 616 KB · PDS-Other Small Docs

    Download Civil site and grading plan

Project narrative

  • Advisory concept review notes classifying the proposed single-family home on a hillside as a Category II Hillside project, with geotechnical, structural and civil document requirements.

    June 15, 2026 · 2 pages · 466 KB · PDS-Concept Review Summary Report

    Download Concept review summary report

Application

  • Application for a single-family home on a hillside lot in an R-1A zone, with a note that a Hillside Questionnaire must accompany the project.

    June 4, 2026 · 2 pages · 157 KB · PDS-Application

    Download Planning project application form
  • Public Works questionnaire marking a new dwelling, a new access driveway, grading deeper than 12 inches, and retaining walls over 4 feet exposed, with multiple walls less than 10 feet apart.

    June 4, 2026 · 1 page · 678 KB · PDS-Other Small Docs

    Download 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.

    June 12, 2026 · 5 pages · 804 KB · PDS-Agency Comments

    Download Hillside retaining wall permitting guidance

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