Modesto's Landscaping Rules: The Rules That Matter

Every city handles landscaping rules a little differently. In Modesto, California, there are 5 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Tree Removal & Heritage Trees

Modesto generally allows removal of privately owned trees on private property without a permit, unless the tree is in a planned development or specific plan area. City-owned street trees require city authorization for removal. Heritage or significant trees may have protections.

Key details: Private Trees: Generally no permit needed. City Trees: Authorization required. Development Areas: May require review. Oaks: CEQA protections may apply.

Unauthorized removal of city tree: fines and replacement costs. Violation of development conditions: code enforcement action.

Weed Ordinances

Modesto prohibits allowing weeds, overgrown grass, or neglected vegetation visible from public rights-of-way. Lawns exceeding 12 inches in height and weed-infested or decayed plants constitute a codified nuisance under the Property Maintenance Code.

Key details: Max lawn/weed height: 12 inches. Code section: MMC § 9-9.509. First citation fine: $100. Max civil penalty: $2,500 per violation per day.

Administrative citations: $100 first offense, $250 second, $500 third. Ongoing violations may incur civil penalties up to $2,500 per day.

Grass Height Limits

Modesto requires property owners to maintain grass and weeds below 12 inches. Overgrown vegetation is a fire hazard in the dry Central Valley climate and is one of the most common code enforcement violations in the city.

Key details: Maximum Height: 12 inches. Fire Season: May–October. Enforcement: Proactive sweeps. Non-Compliance: City abates, places lien.

Overgrown vegetation: notice to abate. Non-compliance: city abatement with costs placed as property lien.

Tree Trimming

Modesto requires property owners to maintain trees so they do not obstruct sidewalks (8 ft clearance), streets (14 ft clearance), or block sight lines at intersections. City-maintained street trees may only be trimmed by city crews or approved contractors.

Key details: Sidewalk Clearance: 8 ft minimum. Street Clearance: 14 ft minimum. City Trees: City maintains — do not prune. Utilities: Coordinate with MID/PG&E.

Failure to maintain tree clearance: code enforcement notice. Damaging city tree: fines and restitution.

Water Restrictions

Modesto enforces water conservation measures year-round, with additional restrictions during drought conditions. Outdoor watering is limited to specific days and times. The city is served by a combination of groundwater and Modesto Irrigation District surface water.

Key details: Watering Days: Odd/even schedule. No Watering: 10 AM–6 PM typically. Runoff: Prohibited. New Landscaping: MWELO compliance >500 sq ft.

Water waste: warning for first offense, fines for repeat violations. Drought restrictions carry additional penalties.

This is not one of those rules that cities tend to ignore. Modesto actively enforces its water restrictions requirements.

The Bottom Line

Modesto's landscaping rules rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Modesto is broadly strict or permissive.

This guide is based on Modesto's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.