Wylie, TX Building Setbacks & Zoning: Lot Coverage Limits (2026)

Every residential district's Figure table in Zoning Ordinance Article 3 lists a Lot Coverage percentage among its yard, height and lot-size standards, and the number is not uniform citywide: the AG/30 Agricultural District and the Single Family - Estate, SF-20/26 and SF-10/24 districts are capped at 45 percent under their respective Figure 3-1, 3-2, 3-3 and 3-4 tables, the Townhouse District (TH) rises to 60 percent under Figure 3-5, and the Manufactured Home District (MH) sits at 50 percent under Figure 3-7. Sec. 10.2, the ordinance's definitions article, pins down what the percentage actually measures: lot coverage means the percentage of a lot covered by the building, and parking facilities are specifically excluded from that calculation, so paved parking areas do not count against the cap the way the building footprint does.

Several districts also carve out a specific exception for patio covers: a non-enclosed attached patio cover is exempt from the rear-yard setback and may extend to within ten feet of the rear property line, provided the total lot coverage, patio cover included, still stays under the applicable percentage cap. The combined footprint of the main structure and any accessory buildings on the same lot counts toward that single district-wide lot coverage number, so an oversized shed or garage can push a property over its limit even if the house itself is comfortably under it.