Commercial Real Estate in Cotati: Downtown Districts, Corridors and Transit-Oriented Zoning

By Matthew Martinez, Founder, CEO & Managing Broker, Diamond Real Estate Group. California DRE #01869679.

Cotati is a small city on Highway 101 between Petaluma and Rohnert Park, and its commercial property sits in four places: the downtown around La Plaza Park and Old Redwood Highway, the Gravenstein Highway corridor, the East Cotati Avenue corridor, and the city’s transit-oriented and commercial/industrial districts. Cotati writes its own zoning in Title 17, its Land Use Code, and it ties most commercial districts to mixed use. Confirm the zoning and any specific plan standards for a parcel with the City of Cotati before relying on this page.

Who controls the parcel

Inside city limits, the City of Cotati’s Chapter 17.20 establishes the zoning districts, which the city first adopted in its 2004 Land Use Code (Ordinance 766) and has amended since, most recently by Ordinance 939 on January 13, 2026. Two specific plans shape large areas: the Downtown Specific Plan, whose four districts are part of Title 17, and the Santero Way Specific Plan. The County’s Urban Service Area layer maps about 2,559 acres for Cotati. Parcels outside the city follow County zoning; see our Sonoma County commercial guide.

Cotati zoning for commercial, industrial and mixed use

Downtown: ground floors, build-to lines and the Historic Core

Ground-floor rules. Section 17.24.050 applies to CD, CG and CE. The street-facing ground floor of a nonresidential building is limited to uses the land use table allows on ground floors. Uses normally restricted to upper floors can take ground-floor space only if no more than half the tenant spaces are restricted, the rest are mainly retail or restaurant, and the facade keeps the street interesting, or if the space has sat vacant for at least 60 days.

Full frontage. The front facade generally must span the full front property line, with listed exceptions, which keeps the downtown streetwall continuous.

Housing in the core. CD allows 12 to 15 units an acre in mixed-use projects, and at least 80% of those units must stay under 2,000 square feet of gross floor area. The minimum density can be reduced where topography, easements or access make it infeasible.

Specific plan districts. The Historic Core, La Plaza, Northern Gateway and Commerce Avenue districts take their standards from the Downtown Specific Plan, which we did not read. Ask the city for the plan’s height, frontage and parking rules before pricing a downtown building.

Parking. Title 10 includes a Downtown Preferential Parking Program (Chapter 10.35), which can affect customer and employee parking near residential streets.

Corridors, transit and industrial land

Gravenstein and East Cotati. CG is the regional-facing corridor along Gravenstein Highway, with a 30-foot setback from the highway right-of-way and up to 50 feet of height with a use permit. CE, along East Cotati Avenue, is more local and uses a 10-foot build-to line. Both allow mixed use at 12 to 15 units an acre and cap coverage at 80%.

TOC. The Transit Oriented Community district allows a base density of 25 to 35 units an acre and a floor area ratio of 1.0 to 3.0, with heights to 45 feet or 55 with a use permit. A TOC overlay also appears on the zoning map.

CI. The Commercial/Industrial district mixes retail, service, large office, warehousing, manufacturing and assembly with live/work units, at heights to 40 feet. All manufacturing and processing must take place inside a building.

City taxes and rules that affect value

• Hotel tax. Chapter 3.12 sets transient occupancy tax at 10% of rent for stays of 30 days or less. Operators must register with the city clerk within 30 days of opening and post the certificate.
• Other taxes. Cotati’s code includes a transactions and use tax (Chapter 3.05), a dwelling unit and building construction tax (Chapter 3.32), business licenses (Chapter 5.04) and a cannabis business tax (Chapter 5.30); we did not verify rates.
• Fees. Title 4 includes traffic and fire impact fees and annual inflation adjustments to development impact fees.
• Mobile home park conversion. Chapter 17.46 regulates converting a mobile home park to another use, which matters for anyone eyeing park land for redevelopment.

Transfer tax, business tax and property tax

The Sonoma County Recorder charges $0.55 per $500 of value, less assumed loans, and lists Cotati among the cities that pay the County rate with no added city tax. A change of ownership generally triggers Proposition 13 reassessment.

Due diligence that matters in Cotati

Start with our commercial due diligence checklist, then add:

• Confirm the district, and whether the Downtown or Santero Way Specific Plan applies.
• For a storefront in CD, CG or CE, check the ground-floor use rules and the 60-day vacancy exception.
• Measure the build-to or setback line, especially the 15-foot La Plaza streets and the 30-foot Gravenstein setback.
• For mixed use, check the minimum density and the 2,000-square-foot unit-size rule.
• For industrial users, confirm operations can stay fully indoors in CI.
• Ask whether ordinances adopted after the code’s last update affect the parcel.

Questions people ask

Sources & notes

1. Cotati Municipal Code Chapter 17.20, Zoning Map and Districts
2. Chapter 17.24, Zoning District Development Standards
3. Chapter 3.12, Transient Occupancy Tax
4. Cotati Municipal Code table of contents (GoCodebook)
5. Sonoma County GIS, Urban Service Areas
6. Sonoma County Recorder, Documentary Transfer Tax

Note: We read Cotati’s code through GoCodebook’s October 2026 edition; the city’s Code Publishing edition is current only through Ordinance 926 (July 9, 2024). We did not read the Downtown or Santero Way Specific Plans, the land use table in Chapter 17.22, parking ratios or tax rates other than the TOT. Street locations in the intro are general geography.

This page is general information, not legal or tax advice. Last reviewed October 2026 by Matthew Martinez.

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