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Foothills/hillside · Planning application

Single-family home approved on undeveloped hillside lot

The city approved a 35-foot-maximum, one-home permit for a 3,471-square-foot house on a 0.2-acre lot with grading and retaining walls, with limits on wall heights and driveway width.

ApprovedCFH25-00090Filed Nov. 14, 2025Warm Springs Mesa · 3588 E Asteroid Dr+1 related filing
Site plan for Single-family home approved on undeveloped hillside lot
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

The city approved a permit for a new single-family home on a previously undeveloped lot at 3588 E Asteroid Dr in the Boulder Heights Estates No 11 Subdivision in Boise. The project includes grading and retaining walls on a hillside site, and the home can be no taller than 35 feet.

Single-family home in hillside overlay

Project name on file: 3588 E ASTEROID DR

Timeline

  1. Feb. 10, 2026

    Appeal Period: Completed

  2. Jan. 30, 2026

    Review Complete: Completed

  3. Jan. 30, 2026

    Current Planning: Complete

  4. Jan. 15, 2026

    Current Planning: In Review

  5. Jan. 15, 2026

    Assign Reviewers: Completed

  6. Jan. 14, 2026

    Review Complete: Corrections Required

  7. Dec. 11, 2025

    Current Planning: Corrections Required

  8. Dec. 11, 2025

    Current Planning: In Review

  9. Dec. 11, 2025

    Assign Reviewers: Completed

  10. Dec. 2, 2025

    Fee Payment: Payment Received

  11. Nov. 28, 2025

    Prescreen Review: Passed

  12. Nov. 25, 2025

    Prescreen Review: Corrections Required

  13. Nov. 25, 2025

    Prescreen Review: In Progress

  14. Nov. 17, 2025

    Prescreen Review: Corrections Required

  15. Nov. 14, 2025

    Prescreen Review: In Progress

  16. Nov. 14, 2025

    Application Submittal: ePlanReview

  17. Nov. 14, 2025

    Application filed

Documents

Site plans

  • Sheet of general construction notes covering code compliance (2018 IRC, IECC, IMC), site drainage grading, foundation slope, and contractor responsibilities for dimensions.

    Jan. 20, 2026 · 1 page · 733 KB · PDS-Maps and Drawings

    Download General notes and specifications sheet

Plans

  • Architectural elevation drawings showing side, front and rear views with living area totals (3,471 SF) and plate heights for the home.

    Jan. 20, 2026 · 1 page · 299 KB · PDS-Maps and Drawings

    Download Elevation plan, front, sides and rear
  • Engineer's erosion and sediment control plan sheet showing best management practices, referenced to a separate design report.

    Jan. 20, 2026 · 1 page · 801 KB · PDS-Maps and Drawings

    Download Erosion and sediment control plan, sheet 2 of 2
  • Engineering grading and drainage plan sheet with grading notes and legend, prepared by RiveRidge Engineering Co.

    Jan. 20, 2026 · 1 page · 792 KB · PDS-Maps and Drawings

    Download Grading and drainage plan, sheet 2 of 2
  • Dimensioned main level floor plan showing room layouts, emergency egress window notes, a retaining wall for the patio above, and square footage totals.

    Jan. 20, 2026 · 1 page · 748 KB · PDS-Maps and Drawings

    Download Main level floor plan
  • Architectural floor plan of the upper level, drawn at 1/4 inch = 1 foot scale and dated 11/7/2025, showing room dimensions, window sill heights and a covered deck.

    Jan. 20, 2026 · 1 page · 288 KB · PDS-Maps and Drawings

    Download Upper level floor plan
  • Engineering exhibit showing rock pile details for Lots 19 through 22 in the Boulder Heights Estates Subdivision No. 11, prepared by Riveridge Engineering Co.

    Jan. 20, 2026 · 1 page · 293 KB · PDS-Other Small Docs

    Download Rock pile exhibit for Lots 19-22

Project narrative

  • Letter describing a new single-family home with 3,471 square feet of living space and a garage, stating that materials meet Hillside requirements and the site includes a defensible space perimeter.

    Jan. 20, 2026 · 1 page · 168 KB · PDS-Letter of Intent

    Download Letter of explanation for new single-family home

Decisions

Notices

  • City of Boise notice that a hillside permit for a single-family home has been approved, with an appeal deadline of February 9, 2026.

    Jan. 28, 2026 · 2 pages · 635 KB · PDS-Legal Notice

    Download Notice of approval for hillside permit

Application

  • Checklist of documents required for Category II and III foothills and hillside applications, including the letter of explanation, geotechnical report, and fire flow letter.

    Jan. 20, 2026 · 3 pages · 241 KB · PDS-Other Small Docs

    Download Foothills and hillside application submittal requirements
  • Public Works checklist on hillside impacts, marking a new dwelling structure as part of the project; other items such as new parcels, additions and grading are marked no or left blank.

    Jan. 20, 2026 · 1 page · 700 KB · PDS-Other Small Docs

    Download Public Works hillside project questionnaire
  • Category II application for a single-family home on a 0.2-acre lot in the hillside overlay, with fire flow and sprinkler details and the submittal checklist requirement.

    Nov. 14, 2025 · 2 pages · 202 KB · PDS-Application

    Download Hillside and foothills development application

Studies and reports

  • Soils exploration and foundation evaluation by Atlas Technical Consultants for ten lots across Boulder Heights Estates Nos. 11 and 12, dated April 2, 2025.

    Jan. 20, 2026 · 44 pages · 2.3 MB · PDS-Other Small Docs

    Download Geotechnical investigation for proposed residences
  • Geotechnical letter confirming no rock stockpiles remain on lots 19 through 22 after a visual inspection, noting one small soil stockpile between lots 19 and 20.

    Jan. 20, 2026 · 1 page · 366 KB · PDS-Other Small Docs

    Download Site suitability letter on rock stockpile removal, lots 19-22
  • Geotechnical firm Atlas confirms the site is suitable for the planned residence, based on review of the grading and drainage plan (Sheet 1) against its earlier subsurface investigation.

    Jan. 20, 2026 · 1 page · 307 KB · PDS-Other Small Docs

    Download Site suitability letter

Photos

Correspondence

  • Fire department letter approving the single-family home subject to defensible space, hydrant fire flow, and automatic sprinkler conditions.

    March 10, 2026 · 4 pages · 412 KB · PDS-Agency Comments

    Download Boise Fire Department comments on wildland-urban interface and fire flow
  • Public Works engineer's review finds the proposed single-family dwelling compliant with hillside, grading and drainage criteria, relying on the grading plan and geotechnical report.

    March 10, 2026 · 2 pages · 127 KB · PDS-Agency Comments

    Download Public Works drainage and hillside comments
  • Boise Parks and Recreation, with Community Forestry, reviewed the submitted plans and has no comments or recommendations.

    March 10, 2026 · 1 page · 58 KB · PDS-Agency Comments

    Download Boise Parks and Recreation comments
  • Public Works says the project must connect to central sanitary sewer, which is available in the adjacent street, and notes that sewer capacity fees may apply at building permit issuance.

    March 10, 2026 · 1 page · 54 KB · PDS-Agency Comments

    Download Public Works sewer comments
  • Water utility letter reporting available pressure (40 PSI at average demand) and fire flow (1500 GPM at 20 PSI residual) for fire sprinkler design.

    Jan. 20, 2026 · 1 page · 130 KB · PDS-Other Small Docs

    Download Veolia water pressure and fire flow information

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. 23, 2026 · 504 KB · PDS-Maps and Drawings

  • Statement of legal interest

    Jan. 20, 2026 · 60 KB · PDS-Statement of Legal Interest

  • Agency transmittal

    Jan. 20, 2026 · 136 KB · PDS-Transmittal Agencies

  • Fee receipt

    Dec. 2, 2025 · 134 KB · PDS-Receipts

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