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Variance · Planning application

County approves variance allowing one home on 4.41-acre lot

Joseph Guenther sought the variance because the parcel is below the 40-acre minimum for its zone, so no structure can be built without it. The Ada County Board of County Commissioners approved it Sept. 10, and the home will need a building permit and a new septic system.

Approved202501354Filed July 11, 2025Ada County · 8560 N Lost Sage Ln
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 Ada County's record. See the official record

Joseph Guenther is asking Ada County for a variance to make a 4.41-acre parcel at 8560 N. Lost Sage Lane, near Boise, eligible for a building permit. The parcel is below the 40-acre minimum for its Rural Preservation zone, so no structures can be built without the variance. The document describes the request as a lot size variance only, and the staff report recommends approval to the Board of County Commissioners.

Variance for Lot Size. The property is located at 8560 N Lost Sage Ln and contains 4.41 acres in the Rural Preservation (RP) District; Section 18, T.4N, R.2E.

Timeline

  1. Sept. 10, 2025

    Ada County staff recommended approval

  2. Sept. 10, 2025

    Approved

    Ada County Board of County Commissioners: Approved.

  3. Sept. 10, 2025

    Public hearing: Ada County Board of County Commissioners

  4. Sept. 5, 2025

    Document added: Memo (Board of County Commissioners, Sep 10, 2025)

  5. Sept. 2, 2025

    Document added: Staff report (Board of County Commissioners, Sep 10, 2025)

  6. Sept. 2, 2025

    Document added: Findings (Board of County Commissioners, Sep 10, 2025)

  7. July 11, 2025

    Application filed

Documents

Staff reports

  • Ada County staff memo to commissioners transmitting Exhibit 22, a signed sign posting certification form for the variance application, submitted Sept. 3, 2025.

    Sept. 5, 2025 · 2 pages · 11.2 MB · Staff Memo

    Download Staff memo on additional exhibit: sign posting certification
  • Ada County staff report recommending on a variance request for a 4.41-acre parcel in the Rural Preservation district that falls short of the 40-acre minimum, so it could become eligible for a building permit.

    Sept. 2, 2025 · 43 pages · 10.0 MB · Staff Report

    Download Staff report for variance to minimum lot size

Decisions

  • Board of Ada County Commissioners decision on a lot-size variance application, covering the record, procedural history, project description and site characteristics following the Sept. 10, 2025 hearing.

    Sept. 2, 2025 · 6 pages · 237 KB · Findings

    Download Findings of fact, conclusions of law and order

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