Las Cruces, NM Building Setbacks & Zoning: Lot Coverage Limits (2026)

Section 38-44(J) of the Land Development Code, the University District Overlay along University Avenue, is one of the few places in the Las Cruces zoning code that sets a hard percentage limit on how much of a lot may be covered by buildings, pavement, and other impervious surface. In the University Avenue Zone (UAZ), the highest-intensity core of the overlay, no more than 90 percent of the site may consist of impervious surface, leaving at least 10 percent for landscaping, permeable pavers, or other pervious ground cover.

In the surrounding Transition Zone (TZ), the buffer between the UAZ and adjoining neighborhoods, the limit drops to 80 percent impervious surface. Both figures appear in the same block, lot, and density standards table that also sets each zone's density and setbacks, so a site plan reviewer checks impervious coverage alongside density and yard requirements in a single pass. Outside this overlay, the general residential (R-1, R-2, R-3) and office/commercial/industrial zoning districts in Sections 38-31 and 38-32 do not carry a separate lot-coverage or impervious-surface percentage; site coverage in those districts is controlled indirectly through setback lines, required parking, and landscaping standards in Chapter 32 rather than a stated maximum percentage.

A property owner developing along University Avenue should confirm which of the two University District zones the parcel sits in before sizing a building footprint or a parking lot, since the difference between the 90 percent and 80 percent caps can change how much paved parking a site can support.