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Monterey County, CA Building Setbacks & Zoning: Lot Coverage Limits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

LDR coverage cap
35% under 20,000 sq ft; 25% at/above (§21.14.060)
HDR coverage cap
60% maximum (§21.10.060(E))
MDR coverage cap
35% maximum (§21.12.060(E))
RDR coverage cap
25% maximum (§21.16.060(E))
Coverage excludes
eaves ≤30in, driveways, low decks (§21.06.250)
Scope
unincorporated, non-coastal county only

Summary

Monterey County caps how much of a residential lot can be covered by structures, and the cap moves with zoning density: Low Density Residential parcels top out at 35% coverage under 20,000 square feet and 25% at or above that size, while High Density Residential allows up to 60%, Medium Density Residential 35%, and Rural Density Residential 25%, all under Title 21.

These county ordinances apply to unincorporated areas of Monterey County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

21.14.020 - Applicability. The regulation of this Chapter shall apply in all "LDR" Districts and are subject to Chapter 21.62 (Height and Setback Exceptions) of this Title....21.14.060 - Site development standards....E.Building Site Coverage, Maximum: thirty-five (35) percent on lots less than twenty thousand (20,000) square feet; twenty-five (25) percent on lots of twenty thousand (20,000) square feet or more.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 56).

Full Breakdown

250 as any area covered by a structure, structures or structure protrusions including decks twenty-four inches or more above grade, but excludes building eaves of thirty inches or less, paved driveways, sidewalks, paths, patios, and decks under twenty-four inches high. 060(E) allows twenty-five (25) percent in Rural Density Residential. 070(F)(2)(d) raises the cap to eighty (80) percent for the HDR/5 District within the Rancho Cañada Village Subdivision. 010; land in the Coastal Zone, including Big Sur and the coastline, is regulated under the separate Title 20 coastal zoning ordinance, and the incorporated cities of Salinas, Monterey, Seaside, Marina, Carmel-by-the-Sea, Pacific Grove and King City set their own coverage limits.

Violations & Fines

Exceeding the coverage maximum without an approved permit is an unpermitted use or structure under Section 21.84.040(A), a misdemeanor chargeable as an infraction at the prosecutor's discretion. The Director of Planning may record a Notice of Violation against the property under Section 21.84.100, which blocks the County from issuing further permits on the parcel under Section 21.84.120 until the excess coverage is removed or a variance is obtained through Chapter 21.72.

Frequently Asked Questions

How much of my lot can I cover with buildings in unincorporated Monterey County?
Your maximum coverage is set by your zoning district. Low Density Residential parcels are capped at 35% coverage under 20,000 square feet and 25% at or above that size under Section 21.14.060(E). Medium Density Residential allows 35%, High Density Residential allows up to 60%, and Rural Density Residential is capped at 25%.
What counts toward lot coverage?
Section 21.06.250 defines coverage as any area covered by a structure or structure protrusion, including decks twenty-four inches or more above grade. It excludes building eaves of thirty inches or less, paved driveways, sidewalks, paths, patios, and decks under twenty-four inches high, so a ground-level patio does not count against your cap.
Can the county ever allow more coverage than the district maximum?
Yes, by specific exception. Section 21.10.070(F)(2)(d) raises the High Density Residential coverage cap to 80% for the HDR/5 District inside the Rancho Cañada Village Subdivision. Outside a named exception like that, exceeding your district's cap requires a variance under Chapter 21.72.

Sources & Official References

Other rules in Monterey County

All Monterey County rules

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