Los Alamos County

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Los Alamos County · development

Development activity

Active development applications and projects in Los Alamos County, ranked by community impact.

2 applications (filtered)6 types

All time Last 30 days Last 6 monthsAll statuses Approved Under review Conditions required Pending Tabled Denied

All types Other Site Plan General Plan Amendment Variance Conditional Use Subdivision

Filtered to Under Review

Filtered to 30d

Under-reviewOther

Grand Mesa Partners LEDA Project and MRA Plan — 400 Trinity Drive

Grand Mesa Partners 400 Trinity Drive Hilltop Owners LLC

400 Trinity Drive, Los Alamos, NM

2 hearings5 commentsLast discussed Oct 20, 2026

Under-reviewGeneral Plan Amendment

Case No. ZCA-2026-0021 — Temporary Sign Text Amendment

Los Alamos County Community Development Department

1 hearing0 commentsLast discussed Oct 14, 2026