Santa Rosa's Landscaping Rules: The Rules That Matter

Every city handles landscaping rules a little differently. In Santa Rosa, California, there are 7 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.

Composting

Santa Rosa's Water Efficient Landscape Ordinance, § 14-30.040(B)(1)(c), makes builders and homeowners work six cubic yards of compost per 1,000 square feet into the top eight inches of soil on any permitted new or rehabilitated landscape.

Key details: Governing section: SRCC § 14-30.040(B)(1)(c). Compost rate: 6 cubic yards per 1,000 sq ft. Incorporation depth: Minimum 8 inches. Exemption: Soils over 6% organic matter. Applies to: Permitted new/rehabbed landscapes.

A landscape design plan that omits the required compost incorporation, soil analysis, or mulch depth does not meet § 14-30.040 and can be rejected at plan check or final inspection by the City's Water Department, delaying permit sign-off until the plan is corrected.

Native Plants

Santa Rosa's landscaping chapter exempts areas planted with intentionally unirrigated native plants from the automatic irrigation system mandate that otherwise applies to every landscaped area in the city. The zoning code also directs plant selection toward species adapted to local climate and soil, and specifically encourages protecting and preserving native species and natural areas on developed sites.

Key details: Governing chapter: City Code Chapter 20-34. Irrigation exemption: Unirrigated native plant areas only. Reviewing authority: Director, Planning and Economic Development. Related ordinance: Water Efficient Landscape Ord., Ch. 14-30. Minimum planting width: 3 ft (4 ft with trees).

Landscape and irrigation improvements, including any native-plant area claimed as irrigation-exempt, must be built exactly as shown on the plans the Director approved. Section 20-34.030(E) makes that installation a prerequisite to final approval or clearance of the project, so a site that installs unapproved plant material or skips the required irrigation system where the native-plant exemption does not actually apply can be held at final building inspection until it is brought into conformance.

Santa Rosa is more permissive than most cities when it comes to native plants. That said, there are still limits.

Weed Ordinances

Santa Rosa's property maintenance code caps weed growth on any lot at six inches. Section 18-20.302.4.1 amends the International Property Maintenance Code to require that premises and exterior property stay free of weed growth over six inches, ban noxious weeds outright, and require overgrown, dead, or hazardous vegetation to be cleared within 24 hours of being flagged.

Key details: Weed height limit: 6 inches maximum on premises/exterior property. Vertical clearance: 8 ft over sidewalks, 13 ft over streets. Abatement clock: 24 hours once hazardous growth is flagged. Enforcing agency: Code enforcement; Fire Department under Ch. 9-08. Governing section: Santa Rosa City Code § 18-20.302.4.1.

A weed violation exceeding the six-inch limit can be enforced either as a misdemeanor under Chapter 1-28 (up to $1,000 and six months in jail) or through an administrative citation under § 1-30.235, with the penalty amount set by Council resolution and due within 21 days; a late payment adds a 50 percent penalty within 30 days, rising to a maximum 100 percent surcharge. If the City abates a declared nuisance itself under Chapter 9-08, the Fire Department bills the property owner for its full abatement cost.

Tree Removal & Heritage Trees

Santa Rosa requires a City permit before anyone alters, removes, or relocates any heritage, protected, or street tree, with exemptions for ordinary trees on already-developed single-family lots, hazard trees, utility-line clearance, and a short exempt-species list. Unpermitted removal of a covered tree is a misdemeanor under Section 17-24.100.

Key details: Permit required for: Any heritage, protected, or street tree. Enforcing agency: Director of Community Development. Permit validity: 60 days from issuance. Unauthorized removal replacement: 4 trees per 6 inches of diameter. In-lieu payment option: $100 per 15-gallon replacement tree.

Violating Chapter 17-24 is a misdemeanor under Section 17-24.100, enforced under Chapter 1-28's penalty schedule. Instead of prosecution, Section 17-24.130 lets an owner petition to replant four trees per six inches of unauthorized removal. The City Attorney may seek an injunction under Section 17-24.120, and Section 17-24.140 bars the property from any City development or building permit for two years.

This is not one of those rules that cities tend to ignore. Santa Rosa actively enforces its tree removal & heritage trees requirements.

Rainwater Harvesting

New or remodeled landscaping in Santa Rosa that needs a building, grading, or design-review permit must document any stormwater system on the landscape plan. Section 14-30.040(A)(13) specifically requires showing the location, installation details, and size of rainwater harvesting or catchment technologies, and directs applicants to the City or the North Coast Regional Water Quality Control Board for approval.

Key details: Applies to: New/rehab landscapes needing a permit. Must document: BMP/rainwater catchment location, details, size. Approval contact: City or North Coast RWQCB. Review steps: Design review, permit, completion audit. Enforcement: No final permit until inspection passes.

There's no separate fine for skipping the rainwater-harvesting entry on a landscape plan; the consequence is procedural. Section 14-30.060(A)(3)(a)(v) blocks final building permit approval until City staff inspect and approve the completed landscape, so an incomplete stormwater BMP description, or an unapproved catchment system, can hold up occupancy until it's fixed and resubmitted.

If you are coming from a city with tighter rules, you will find Santa Rosa gives residents more flexibility on rainwater harvesting.

Tree Trimming

Santa Rosa puts street-tree upkeep on the abutting property owner, not the City. City Code Section 13-32.010 requires owners to keep trees, shrubs and hedges along their street frontage trimmed to a minimum eight-foot clearance over sidewalks and 13 feet over the roadway, and makes them liable if a branch or root hurts someone.

Key details: Pedestrian clearance: 8 ft minimum over sidewalk. Vehicle clearance: 13 ft minimum over roadway. Responsible party: Abutting lot owner. Maintenance scope: Watering, pruning, root barriers, debris removal. Enacted by: Ordinance 3886 § 3 (2008).

The code sets no fixed fine for an untrimmed street tree. Instead, Section 13-32.010(D) makes the failure a civil-liability trigger: if a person is injured, or property is damaged, because an owner did not keep adjacent trees, shrubs, or hedges in a nondangerous condition with the required 8-foot and 13-foot clearances, that owner is liable to the injured party for the resulting damages.

Water Restrictions

Letting a sprinkler or hose run off your Santa Rosa property and onto pavement is illegal, not just wasteful. City Code Section 14-21.030 bans any outdoor use of potable or recycled water that produces runoff, and Section 14-21.050 backs the ban with fines that climb from a warning to $500 per repeat offense.

Key details: Prohibited act: Outdoor water use causing runoff. 1st violation: Written warning only. 2nd violation: $100 fine (waivable within 72 hrs). 3rd violation: $200 fine. 4th+ violation: $500 fine.

Penalties climb with each repeat: a written warning first, then $100, $200, and $500 for the third and every later violation within 12 months, with each 72-hour stretch of ongoing runoff or leakage counted as its own separate violation. Santa Rosa Water can also disconnect water service entirely for a runoff or recirculating-equipment violation under Section 14-21.050(B).

The Bottom Line

Compared to many U.S. cities, Santa Rosa gives residents more room on landscaping rules. 2 of the 7 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.

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