Planning commission approves final plat to replat Arbolada site into 23 lots in North Mesa

The Los Alamos Planning and Zoning Commission approved a final subdivision plat on Aug. 20, 2025, to replat the previously approved Arbolada subdivision into 23 single‑family lots and four tracts on about 17.07 acres in the North Mesa neighborhood.

County senior planner Desiree Luhan told commissioners the application, submitted by Consensus Planning and Titan Development on behalf of property owners Sonya Donaldson and Sandy Kramer, meets the decision criteria in Section 16.74(a)(3) of the Los Alamos County Development Code and recommended approval. The replat would convert the earlier 85‑lot layout into 23 legal lots fronting a new 50‑foot public street, Arbolada, with three tracts dedicated as open space and one tract (Tract 4) reserved for future development.

The commission’s approval follows staff findings that the plat conforms to adopted county plans, will not be materially detrimental to public health and safety, meets dimensional and utility standards, and preserves required easements. Luhan said lots would range from about 5,783 square feet to an average of roughly 6,057 square feet, and that utility upgrades — including a planned waterline upsizing — have been reviewed by Public Utilities and the interdepartmental review committee (IDRC).

Nearby residents raised concerns in public testimony about school capacity, drainage and construction impacts. Resident Melissa Boswell, whose house borders the site, said her neighborhood already faces crowded classrooms and warned the larger development could add students; she said, “At this point, they’ve lied to us, I feel,” criticizing differences between neighborhood meeting materials and the developer’s proposal. Chair Easton and staff repeatedly noted that school capacity and staffing are under the school district’s authority and directed residents seeking details about classroom planning to the superintendent, while pointing to the application packet for drainage and grading details.

Applicant representatives and county engineers said drainage plans are sized to keep stormwater on‑site and that easements and a new 6‑foot masonry wall are planned along the shared property edge to address neighbor concerns. The developer confirmed the final plat is required before an application for the Tract 4 development can proceed.

Commissioner Bruhl moved to approve the final plat; Commissioner Nelson seconded. A roll‑call vote recorded approval by Commissioners Hill, Nelson, Easton, Adler and Breul. The commission authorized the chair to sign a final order with findings of fact and conclusions of law. Any party with standing may file an appeal of the written decision within 15 calendar days of its issuance.