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Merced County, CA Building Safety: Building Permits (2026)

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

Key Facts

Permit scope
Required for structural, plumbing, electrical, mechanical work
Exempt shed
One per dwelling, <=120 sq ft, <=12 ft tall
Exempt fences/walls
Fences to 6 ft, walls to 4 ft
Owner work
No contractor license needed on owner-occupied homes
Unpermitted work fee
1x to 5x the normal permit fee

Summary

Merced County requires a separate permit before anyone erects, alters, repairs, moves, or demolishes a building or structure in the unincorporated county, with its own permit for structural, plumbing, electrical, and mechanical work.

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

No person, firm, or corporation shall erect, construct, enlarge, alter, repair, move, improve, remove, convert or demolish any building or structure subject to the provisions of this title, or cause the same to be done, without first obtaining a separate permit for each building or structure from the building official. Permits for each building or structure are required for structural, plumbing, electrical and mechanical work as provided in this title. ... A separate permit shall be required for each structure or building except that a private, attached garage on the lot with a residence may be included in the permit for the residence. A separate structure or building shall be defined as a structure covered by one roof.

View official code

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

070(A) makes it unlawful for anyone to erect, construct, enlarge, alter, repair, move, improve, remove, convert, or demolish a building or structure in the unincorporated county without first obtaining a separate permit from the building official, the deputy director of buildings within the Community and Economic Development Department. The section requires its own permit for structural, plumbing, electrical, and mechanical work, and generally for each building or structure, though a private attached garage sharing a lot with a residence can ride on the residence's permit; a 'separate structure' is defined as one covered by its own roof.

The application process runs through Chapter 1, Division II, Part 2 of the 2022 California Building Standards Code, which the county incorporates by reference with local amendments. 110 exempts detached, single-story storage sheds up to 120 square feet and 12 feet tall with no electrical or plumbing (one per dwelling), roadside stands for seasonal farm products under 200 square feet, wood or steel fences up to six feet, residential block/stucco/concrete walls up to four feet, and retaining walls up to two feet. 040 also drops any contractor-licensing requirement for work on single-family owner-occupied homes, as long as the finished work still meets the title's technical standards.

070(D), the county will not issue a building permit, certificate of occupancy, or other clearance for a parcel already cited for a Title 16 violation unless the new permit corrects that violation.

Violations & Fines

Building without the required permit triggers both a misdemeanor penalty under § 16.12.030, up to $1,000 and six months in jail, or graduated infractions of $100, $200, and $500, and a separate investigation fee under the amended California Building Code § 109.4 (§16.16.020(B)): one times the normal permit fee for a first unpermitted start, doubling for a second occurrence within five years, and up to five times the fee for a fifth or later occurrence, charged whether or not a permit is later issued.

Frequently Asked Questions

Does Merced County require a permit to build a shed or fence?
Only above certain sizes. Section 16.12.110 exempts one detached shed per dwelling up to 120 square feet and 12 feet tall with no electrical or plumbing, plus fences up to six feet, block or stucco walls up to four feet, and retaining walls up to two feet. Anything larger needs a permit and planning review.
Can I do my own electrical or plumbing work on my house?
Yes, if it is your single-family owner-occupied residence. Section 16.12.040 waives the usual contractor-licensing requirement for that work, but the finished job still has to meet every technical standard in Title 16, and the county can still require permits and inspections.
What happens if I build without a Merced County permit?
You face a misdemeanor charge under § 16.12.030, punishable by up to a $1,000 fine and six months in jail, plus an investigation fee equal to your normal permit fee for a first unpermitted start, rising to five times the fee for repeat occurrences within five years.

Sources & Official References

Other rules in Merced County

All Merced County rules

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