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Merced, CA Public Health Rules: Rodent Control (2026)

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

Key Facts

Governing section
Sec. 8.40.070(G), Property Maintenance and Nuisances
Declared nuisance
Overgrown vegetation likely to harbor rats or vermin
Minimum correction period
At least 7 days from notice, Sec. 8.40.100
Liability
Runs to owner, tenant, or successive owner, Sec. 8.40.040
Building standard
CBC Appendix F 'Rodent Proofing' adopted, Sec. 17.04.010

Summary

Merced declares overgrown vegetation likely to harbor rats or vermin a public nuisance under Municipal Code Sec. 8.40.070(G). Code enforcement can inspect the property, order the owner or occupant to abate the condition, and hold every successive owner who lets the nuisance continue liable for it under Sec. 8.40.040.

It is declared a public nuisance for any person owning, leasing, occupying, or having charge of any premises in this city to maintain such premises in such manner that any of the following conditions are found to exist thereon including, but not limited to, those stated in this section: ... G.Overgrown vegetation likely to harbor rats, vermin, and other nuisances or having a tendency to depreciate the aesthetic and property values of surrounding properties;

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 85 - 1-26).

Full Breakdown

070 of the Property Maintenance chapter lists the conditions Merced treats as a public nuisance, and subsection G targets rodent harborage directly: 'Overgrown vegetation likely to harbor rats, vermin, and other nuisances or having a tendency to depreciate the aesthetic and property values of surrounding properties' is declared a nuisance for 'any person owning, leasing, occupying, or having charge of any premises' who lets that condition exist. The same section reaches related harborage conditions, including accumulated garbage or animal waste that attracts insects under subsection Z and dead or decayed vegetation under subsection H.

Responsibility runs with the property: Sec. 040 makes 'every owner, tenant, occupant, agent, person having charge or possession of any premises' liable for maintaining it, and holds a new owner liable for a nuisance a prior owner created if the new owner fails to abate it. An enforcement officer can enter and inspect the property under Sec. 090, then must serve written notice under Sec. 100 identifying the code section violated, the facts constituting the nuisance, and a correction deadline of at least 7 days.

The Building Code adopted at Sec. 010, the 2025 California Building Code, separately incorporates Appendix F, 'Rodent Proofing,' as an alternate construction method a building official can approve for new construction or remodeling, giving the city a construction-standard tool alongside the nuisance-abatement process that governs existing properties.

Violations & Fines

A property owner who ignores the written notice and order to abate faces abatement performed by the city itself, with all costs, including staff and investigation time, billed to the owner under the nuisance chapter's cost-recovery rules. The city can record a lien against the property for unpaid abatement costs, and Sec. 8.40.100 requires the initial notice to give at least 7 days to correct the rodent-harborage condition before further enforcement follows.

Frequently Asked Questions

Can Merced cite me for a rat problem caused by my yard?
Yes. Sec. 8.40.070(G) declares 'overgrown vegetation likely to harbor rats, vermin, and other nuisances' a public nuisance, and holds the owner, tenant, or anyone in charge of the premises responsible for it. Code enforcement can inspect the property under Sec. 8.40.090 and issue a written notice describing the violation and giving a deadline, at least 7 days, to clear the vegetation.
What if I buy a property that already has a rodent nuisance problem?
You inherit the liability. Sec. 8.40.040 states that 'every successive owner of property who neglects to abate a continuing nuisance upon, or in the use of, such property, created by the former owner, is liable therefore in the same manner as the one who first created it.' Buying the property does not erase an unresolved rodent-harborage violation.
Does Merced's building code require rodent-proofing for new construction?
The city's adopted 2025 California Building Code, under Sec. 17.04.010, incorporates Appendix F, 'Rodent Proofing,' as one of the alternate construction methods a builder can use, subject to the building official's approval. It applies alongside, not instead of, the separate nuisance-abatement rule in Sec. 8.40.070(G) that governs existing properties with a harborage condition.

Sources & Official References

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