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Foothills/hillside · Planning application

Single-family home on vacant hillside lot approved in Boise

Biltmore Company LLC received city approval on Jan. 23 to build one new home of about 3,469 square feet, with conditions limiting height to 35 feet, driveway width and retaining wall heights.

ApprovedCFH25-00089Filed Nov. 4, 2025Warm Springs Mesa · 3596 E Asteroid Dr+1 related filing
Site plan for Single-family home on vacant hillside lot approved 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

Biltmore Company LLC received city approval to build one new single-family home on a previously undeveloped lot at 3596 E Asteroid Dr in the Boulder Heights Estates No 11 subdivision in Boise. The approval covers the home's hillside grading and retaining walls, and the city's review found the lot was zoned incorrectly due to a mapping error.

Single-family dwelling in the Hillside overlay.

Project name on file: 3596 E ASTEROID DR

Timeline

  1. Feb. 3, 2026

    Appeal Period: Completed

  2. Jan. 23, 2026

    Review Complete: Completed

  3. Jan. 23, 2026

    Current Planning: Complete

  4. Jan. 12, 2026

    Current Planning: In Review

  5. Jan. 12, 2026

    Assign Reviewers: Completed

  6. Dec. 24, 2025

    Review Complete: Corrections Required

  7. Dec. 24, 2025

    Current Planning: Corrections Required

  8. Dec. 12, 2025

    Current Planning: In Review

  9. Dec. 12, 2025

    Assign Reviewers: Completed

  10. Dec. 11, 2025

    Review Complete: Corrections Required

  11. Dec. 11, 2025

    Current Planning: Corrections Required

  12. Nov. 25, 2025

    Current Planning: In Review

  13. Nov. 25, 2025

    Assign Reviewers: Completed

  14. Nov. 19, 2025

    Fee Payment: Payment Received

  15. Nov. 19, 2025

    Prescreen Review: Passed

  16. Nov. 19, 2025

    Prescreen Review: In Progress

  17. Nov. 14, 2025

    Prescreen Review: Corrections Required

  18. Nov. 12, 2025

    Prescreen Review: In Progress

  19. Nov. 4, 2025

    Application Submittal: ePlanReview

  20. Nov. 4, 2025

    Application filed

Documents

Site plans

  • Revised site plan for a single-family spec home on a lot in the Foothills/Hillside application, with lot coverage, design criteria and area calculations.

    Dec. 17, 2025 · 1 page · 837 KB · PDS-Maps and Drawings

    Download Revised site plan (Dec. 12, 2025)
  • Site plan with lot coverage (about 34%, footprint 3,046 sq ft), area calculations for a 3,469 sq ft spec home, and 2018 IECC energy compliance notes, dated Nov. 19, 2025.

    Nov. 25, 2025 · 1 page · 842 KB · PDS-Maps and Drawings

    Download Site plan for Boulder Heights Estates No. 11 lot 20

Plans

  • Engineer's revised grading and drainage plan sheet with grading notes and legend, prepared by Riveridge Engineering Co.

    Dec. 17, 2025 · 1 page · 814 KB · PDS-Maps and Drawings

    Download Revised grading and drainage plan, sheet 2 of 2
  • Exterior elevation drawings of the proposed home showing front, rear, left and right views with stucco finish, window wells, chimney and plate and grade heights.

    Nov. 25, 2025 · 2 pages · 626 KB · PDS-Maps and Drawings

    Download Building elevations, front, rear, left and right
  • Engineer's grading and drainage plan sheet with general grading notes and a legend, dated Nov. 19, 2025, prepared by RiveRidge Engineering Co.

    Nov. 25, 2025 · 1 page · 810 KB · PDS-Maps and Drawings

    Download Grading and drainage plan, sheet 2 of 2

Project narrative

  • Letter describing a new 3,469 sq ft single-family home with a walk-out lower level and attached garage, stating materials meet Hillside requirements and a defensible space perimeter is included.

    Nov. 25, 2025 · 1 page · 170 KB · PDS-Letter of Intent

    Download Letter of intent for new single-family home

Decisions

  • Planning and Development Services approval of a Category II hillside permit for retaining walls and grading for a new single-family dwelling, with four required grading plan corrections before building permit submittal.

    Jan. 23, 2026 · 7 pages · 202 KB · PDS-Action Letter

    Download Administrative approval letter, Hillside and Foothills permit
  • Revised approval letter for a Category II hillside and foothills permit covering retaining walls and grading, with conditions tied to prior subdivision and conditional use approvals.

    Jan. 23, 2026 · 7 pages · 204 KB · PDS-Action Letter

    Download Administrative approval letter, revised hillside permit

Notices

  • City of Boise notice that staff approved a hillside permit for a new single-family residence, with an appeal deadline of Feb. 2, 2026.

    Jan. 21, 2026 · 2 pages · 615 KB · PDS-Legal Notice

    Download Notice of approval for hillside permit

Application

  • Application form for a single-family dwelling in the Hillside overlay, filed as Category II, with property, applicant, owner, fire flow and submittal details.

    Nov. 25, 2025 · 2 pages · 204 KB · PDS-Application

    Download Hillside and foothills development application form
  • Public Works answers: new dwelling and new access driveway planned; no new parcels, exterior additions, or grading deeper than 12 inches.

    Nov. 25, 2025 · 1 page · 701 KB · PDS-Other Small Docs

    Download Public Works hillside project questionnaire

Studies and reports

  • Geotechnical consultant letter confirming no rock stockpiles remain on the specified lots, noting a small soil stockpile and planned subgrade inspections at construction.

    Jan. 23, 2026 · 1 page · 366 KB · PDS-Other Small Docs

    Download Site suitability letter on rock stockpile removal
  • Geotechnical firm Atlas concludes the lot is suitable for the planned residence, reviewing the grading plan and a 4-foot boulder retaining wall, with no global slope stability analysis required.

    Jan. 23, 2026 · 1 page · 312 KB · PDS-Other Small Docs

    Download Site suitability letter
  • Geotechnical soils exploration and foundation evaluation for proposed residential lots in the Boulder Heights Estates subdivision, prepared by Atlas Technical Consultants, dated April 2, 2025.

    Dec. 17, 2025 · 44 pages · 2.3 MB · PDS-Maps and Drawings

    Download Revised geotechnical investigation report
  • Soils exploration and foundation evaluation by Atlas Technical Consultants for proposed residences in Boulder Heights Estates, dated April 2, 2025.

    Nov. 25, 2025 · 44 pages · 2.4 MB · PDS-Other Small Docs

    Download Geotechnical investigation report

Photos

Correspondence

  • Boise Fire Department conditional approval memo covering wildland-urban interface defensible space, open-flame restrictions, hydrant fire flow and sprinkler requirements.

    Jan. 23, 2026 · 4 pages · 330 KB · PDS-Agency Comments

    Download Fire Department comments on single-family home
  • Boise Parks and Recreation reviewed the application with Community Forestry and has no comments or recommendations.

    Jan. 23, 2026 · 1 page · 57 KB · PDS-Agency Comments

    Download Boise Parks and Recreation comments
  • Public Works staff find the single-family home project suitable for the site if conditions on grading, drainage and the geotechnical letter are addressed during building permit review.

    Jan. 23, 2026 · 3 pages · 178 KB · PDS-Agency Comments

    Download Public Works drainage and hillside comments
  • Public Works memo stating sanitary sewer connection is required upon development, sewer is available in the adjacent street, and capacity fees may apply at building permit.

    Jan. 23, 2026 · 1 page · 54 KB · PDS-Agency Comments

    Download Public Works sewer comments
  • Veolia Water Idaho reports system water pressure and flow at the site's nearby hydrant for fire sprinkler design, under maximum-day conditions.

    Nov. 25, 2025 · 1 page · 131 KB · PDS-Other Small Docs

    Download Veolia Water fire flow letter

Other documents

  • Noticing radius map

    Map showing the area within the notice radius for neighboring property owners who were sent notice of the application.

    Jan. 21, 2026 · 504 KB · PDS-Maps and Drawings

  • Transmittal sheet

    Nov. 28, 2025 · 101 KB · PDS-Transmittal Agencies

  • Statement of legal interest

    Nov. 25, 2025 · 62 KB · PDS-Statement of Legal Interest

  • Submittal checklist

    Nov. 25, 2025 · 246 KB · PDS-Submittal Checklist

  • Fee receipt

    Nov. 19, 2025 · 134 KB · PDS-Receipts

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