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Planning project · Planning application

Deck addition on hillside home approved

City staff approved a deck addition to an existing home on a 0.35-acre residential lot with steep, unstable slopes. It was decided administratively on Oct. 2 and keeps the number of units and the parking unchanged.

ApprovedPLN26-00406Filed April 29, 2026East End · 573 N Morningside Way+2 related filings
Site plan for Deck addition on hillside home 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

Addition in Hillside

Project name on file: 573 N MORNINGSIDE WAY

Timeline

  1. Oct. 14, 2026

    9 documents added

  2. Oct. 2, 2026

    Planning Applications: Project Entitled

  3. June 5, 2026

    Pending Application Submittal: Planning Applications in Review

  4. June 1, 2026

    Concept Review Complete: CR Complete - Type 2

  5. May 20, 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.

  6. May 20, 2026

    Concept Review Complete: Notes

    awaiting license agreement from county

  7. May 19, 2026

    Concept Review Complete: Engineering Preview

  8. May 5, 2026

    Concept Review Complete: Corrections Required

    Per email - please upload hillside questionnaire and provide the distance from the top of the rock wall to the face of the deck. This must be 30' to satisfy WUI requirements.

  9. April 29, 2026

    Application Submittal: Online

  10. April 29, 2026

    Application filed

Documents

Site plans

Project narrative

  • Advisory concept review notes for a deck addition in a hillside area, classed as a Category II Hillside project, with required geotechnical and retaining wall documentation.

    June 1, 2026 · 3 pages · 472 KB · PDS-Concept Review Summary Report

    Download Concept review summary

Application

  • Checklist answers on whether the project involves lot changes, additions, grading, driveways or retaining walls; it indicates an exterior addition and no new dwelling or parcel change.

    May 5, 2026 · 1 page · 698 KB · PDS-Other Small Docs

    Download Public Works hillside project questionnaire
  • Application for a deck and patio cover using WUI-approved decking, with engineering to be provided during permitting after Fire Marshal consultation.

    April 29, 2026 · 2 pages · 159 KB · PDS-Application

    Download Planning project application for deck and patio cover

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.

    May 20, 2026 · 5 pages · 804 KB · PDS-Agency Comments

    Download Hillside retaining wall permitting guidance
  • Fire Marshal Mike Bisagno replies that a proposed deck configuration near the 30-foot defensible space has been approved after a pre-construction site visit.

    May 19, 2026 · 2 pages · 273 KB · PDS-Other Small Docs

    Download Email from Fire Marshal on deck and defensible space

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