Maximum lot coverage in Rowlett is set by the Development Code dimensional tables in Sec. 77-401 and varies by single-family district. Larger-lot districts have no maximum coverage (SF-40 is 'None'), while smaller-lot districts are capped (for example 45% in SF-20, 30% in SF-15, 25% in SF-10). The limit tightens as lot size decreases.
Maximum lot coverage in Rowlett is a dimensional standard found in Chapter 77-400, Sec. 77-401, Table 4.1-1 (Dimensional Requirements - Residential Districts), and it varies by zoning district. The table lists a 'Max. Lot Coverage (%)' column for each single-family district. In the largest-lot district, SF-40, the maximum lot coverage is listed as 'None' (no percentage cap). As lots get smaller, a coverage cap applies and tightens: SF-20 is 45%, SF-15 is 30%, and SF-10 is 25%, with the smaller SF-9 through SF-5 districts carrying their own listed percentages in the table. Sec. 77-402 confirms that any lot that is created, developed, used, or occupied must meet the minimum lot area, width, depth, and coverage requirements set out in Tables 4.1-1, 4.1-2, and 4.1-3 for its district. Lot coverage works alongside the setback and height limits to control overall building bulk on a lot. Because the percentage and whether a cap applies at all depend on the specific district, owners planning a large addition, a second structure, or a new home should look up their zoning and read the coverage column in the Sec. 77-401 table. Some uses may have stricter use-specific standards under Subchapter 77-300/302, and Form-Based Code properties follow the FBC's own lot-occupation standards rather than these tables.
Covering more of the lot with buildings than the district's maximum lot coverage percentage violates the Development Code and is checked at plan review. The risk is greatest on smaller lots (SF-10 and below) where the percentage cap is lower; large additions or accessory buildings can push a lot over its limit. Exceeding the cap would require a variance or a smaller building footprint. In SF-40, where coverage is listed as 'None,' setbacks and height still limit how much can be built.
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