The City of Merced caps maximum lot coverage by zoning district in its Zoning Ordinance (Title 20). Single-family limits range from about 25% (R-R) up to 50% (R-1-5), and multi-family/mobile-home districts reach 50-65%. Per the City, lot coverage does not include fences, walls, hedges, swimming pools, or uncovered patios.
Maximum lot coverage — the share of a lot that buildings may cover — is set by zoning district in the City of Merced Zoning Ordinance (Title 20). According to the City's residential development-standard tables, single-family coverage limits increase as lot sizes shrink: roughly 25% in R-R, 30% in R-1-20, 40% in R-1-10, 45% in R-1-6, and 50% in R-1-5. Multi-family districts allow more: about 50% in R-2, 55% in R-3, and 65% in R-4, with R-MH (Mobile Home Park) around 65%. Importantly, the City Planning Division states that lot coverage shall not include fences, walls, hedges, swimming pools, or uncovered patios — so those features do not count against the maximum building footprint. Lot coverage works together with setbacks and height to control building bulk; a project must satisfy all three. Because the percentage depends on the exact zoning district and how coverage is defined in Title 20, the City advises confirming the figure for a specific parcel with the Planning Division at (209) 385-6858. These are City limits applicable inside city limits only; Merced County applies separate standards in unincorporated areas.
Exceeding the maximum lot coverage results in permit denial or a requirement to reduce the building footprint; a variance is needed to exceed it. The City enforces lot coverage through Development Services under Title 20. Administrative citation amounts follow California Government Code Section 36900(b): $100 / $200 / $500.
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