Planning project · Planning application
Retaining wall replacement proposed at single-family home on hillside lot
The plan would replace a retaining wall at an existing house on about 0.3 acres. City planners say it needs hillside review because of slope and soil hazards, and a geotechnical report may be required. The application is under administrative review.
From the filing
City of Boise hasn't published a description of this application yet. See the official record
Project name on file: 1504 E SHENANDOAH DR
Timeline
Today
Status changed from “Planning Application Review” to “Applications in Review”
Yesterday
Status changed from Submitted to In review
Reported as “Planning Application Review”.
Yesterday
Pending Application Submittal: Planning Applications in Review
Oct. 13, 2026
7 documents added
Sept. 1, 2026
Concept Review Complete: CR Complete - Type 2
Aug. 14, 2026
Concept Review Complete: Engineering Preview
Aug. 14, 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. 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. Please include your application number and address in the subject line.
Aug. 12, 2026
Application Submittal: Online
Aug. 12, 2026
Application filed
Documents
Site plans
- Download Site plan, updated
Handwritten or scanned marginal notes on a one-page site plan, mentioning a fence or wall, setbacks and dimensions; the text is too garbled to read reliably.
Sept. 1, 2026 · 1 page · 93 KB · PDS-Maps and Drawings
- Download Site plan
Aug. 12, 2026 · 1 page · 77 KB · PDS-Other Small Docs
Project narrative
- Download Concept review summary for retaining wall replacement
Planner summary classifying the project as a Category II Hillside application and listing expected geotechnical, structural, and civil submittal documents.
Sept. 1, 2026 · 2 pages · 457 KB · PDS-Concept Review Summary Report
- Download Project description narrative (handwritten, illegible)
Handwritten narrative describing planned work such as wall, stair and concrete pad construction, but the text is too garbled by OCR to read reliably.
Aug. 12, 2026 · 1 page · 115 KB · PDS-Other Small Docs
Application
- Download Planning project application for retaining wall replacement
Application to remove an existing railroad tie retaining wall along a driveway and install a new retaining wall, with a Hillside Questionnaire required.
Aug. 12, 2026 · 2 pages · 154 KB · PDS-Application
- Download Hillside project questionnaire
Public Works questionnaire marking the project as involving a new access road or driveway, grading over 12 inches deep, and retaining walls, with wall height and spacing unknown.
Aug. 12, 2026 · 1 page · 146 KB · PDS-Other Small Docs
Correspondence
- Download Hillside retaining wall permitting guidance
Public Works guidance on when retaining walls in the hillside zone need a determination, slope stability analysis, and planning-code height and setback limits.
Aug. 14, 2026 · 5 pages · 804 KB · PDS-Agency Comments
