Merced County, CA Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- Max coverage, R-R (no sewer/water)
- 40 percent
- Max coverage, R-1 and R-1-5000
- 60 percent
- Max coverage, R-2/R-3/R-4
- 70 percent
- Max coverage, M-H zone
- 80 percent
- Governing table
- Zoning Code Table 2-4
Summary
Table 2-4 of the Merced County Zoning Code caps maximum structure coverage on residential parcels at 40% in Rural Residential without public sewer or water, rising to 60% in R-R with sewer, R-1 and R-1-5000, 70% in R-2/R-3/R-4, and 80% in the M-H mobile home zone.
Parcel Depth, Width, and Coverage (maximum) area measured in feet ... Maximum Depth: Width Ratio 3:1 / 3:1 / 3:1 / 3:1 / 3:1 / 3:1. Maximum Structure Coverage (percentage) 40 / 60 / 60 / 60 / 70 / 80
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4930839; v8 updated 2026-06-02).
Full Breakdown
030, Table 2-4 (Residential Zone Development Standards) sets a 'Maximum Structure Coverage (percentage)' figure alongside the parcel depth, width and coverage standards for each residential zone. The limit is 40% in the Rural Residential zone without public sewer or water service, 60% in Rural Residential with public sewer/water, 60% in the R-1 zone, 60% in R-1-5000, 70% in the combined R-2/R-3/R-4 multi-family zones, and 80% in the M-H mobile home zone. This coverage cap sits in the same table as the zone's minimum parcel width, minimum parcel depth, and maximum depth-to-width ratio of 3:1 that applies uniformly across all six residential zones. 62, both cross-referenced directly beneath the coverage figures in Table 2-4.
Violations & Fines
A structure exceeding the maximum coverage percentage for its zone will not clear the zoning clearance or building permit review that Merced County Development Services conducts before issuing a permit, and coverage discovered to be out of compliance after construction is a zoning violation subject to code enforcement, which can require the owner to remove or reduce the offending structure at their own cost or seek a variance under Chapter 18.126.
Frequently Asked Questions
What is the maximum lot coverage for a house in unincorporated Merced County?
Do accessory structures count toward the lot coverage limit?
Which zone allows the highest building coverage on a residential lot?
Sources & Official References
Other rules in Merced County
California rules heatmap·Compare Merced County to another location·View the California building setbacks & zoning overview
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