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Hercules, CA Property Maintenance: Vacant Lot Maintenance (2026)

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

Key Facts

Weed height limit
12 inches, HMC § 9-5.04 / IPMC § 302.4
Applies to
All premises, including vacant/unimproved lots
Adopted base code
2024 International Property Maintenance Code
Alternate nuisance path
HMC § 4-10.04, 15-30 day abatement notice
Default penalty
Infraction under HMC § 9-1.03

Summary

Hercules caps weeds and plant growth at twelve inches on every premises, including vacant and unimproved lots, under Section 9-5.04's amendment to Property Maintenance Code Section 302.4. A separate, older Nuisance Abatement provision, Section 4-10.04, independently lets the City cite overgrown or hazardous vegetation as a public nuisance with a fifteen-to-thirty-day abatement notice.

Amending Section 302.4, "Weeds," to read: All premises and exterior property shall be maintained free from weeds or plant growth in excess of twelve (12) inches.

Full Breakdown

Hercules folded its weed standard into the 2024 International Property Maintenance Code rather than write a separate weed ordinance. Section 9-5.02 adopts the 2024 IPMC, including appendices, by reference as one of the Title 9 technical codes administered under Chapter 1 of Title 9, and Section 9-5.03 keeps a copy on file with the Chief Building Official for public inspection. Section 9-5.04 then amends the model code's own Section 302.4, 'Weeds,' to read that all premises and exterior property must be kept free of weeds or plant growth over twelve inches, a rule that reaches vacant, unimproved parcels exactly as it reaches occupied lots because 'premises' under the Property Maintenance Code is not limited to built structures.

A separate, older enforcement path reinforces the same limit for problem lots: Section 4-10.04 of the Nuisance Abatement chapter (Title 4) independently declares dead, decayed, diseased or hazardous weeds and other vegetation a public nuisance when they endanger public safety or damage neighboring property, and overgrown vegetation a nuisance whenever it harbors vermin, causes detriment to neighbors, or creates a fire hazard. Either code section lets the City act: a Property Maintenance Code violation is enforced under Title 9's general penalty scheme in Section 9-1.03 (infraction, or misdemeanor if the City elects to prosecute), while a Nuisance Abatement finding triggers the notice-and-abatement procedure in Section 4-10.06, giving the owner fifteen to thirty days to cut the growth before the City does it and bills the owner.

Violations & Fines

Letting weeds or plant growth exceed twelve inches on any premises, occupied or vacant, violates Section 9-5.04's amendment to Property Maintenance Code Section 302.4 and is enforced as an infraction (or misdemeanor, at the City's election) under Section 9-1.03. The same overgrown lot can also be cited as a public nuisance under Section 4-10.04, which starts a fifteen-to-thirty day abatement clock; miss it and the City clears the lot and bills the owner.

Frequently Asked Questions

How tall can weeds get on a vacant lot in Hercules before it's a violation?
Twelve inches. Section 9-5.04 of the Municipal Code amends the adopted Property Maintenance Code's Section 302.4 to require that all premises and exterior property, including vacant and unimproved lots, stay free of weeds or plant growth taller than twelve inches.
Who enforces the weed limit on an empty lot in Hercules?
Either the Chief Building Official under the Property Maintenance Code (Section 9-5.04) or the City's Enforcement Officer under the separate Nuisance Abatement chapter (Section 4-10.04), which independently treats overgrown or hazardous vegetation as a public nuisance and can issue a fifteen-to-thirty day abatement notice under Section 4-10.06.
What happens if I don't cut weeds after Hercules cites my vacant lot?
Under the Nuisance Abatement procedure, the City abates the growth itself once the fifteen-to-thirty day notice period in Section 4-10.06 expires and bills the owner for the cost under Section 4-10.05. A Property Maintenance Code citation is separately enforced as an infraction, or misdemeanor at the City's election, under Section 9-1.03.

Sources & Official References

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