Suisun City, California Zoning Map

The Marina (M) zone at 135 acres covers the boat harbor and surrounding water-related land. Permitted uses typically include marine services, boat storage, sailing clubs, waterfront dining, lodging, and recreational facilities. Ground-floor retail and restaurant uses facing the water are common in marina districts of this type. Any development within the Marina zone involving fill, piers, or structures within the waterway is subject to Bay Conservation and Development Commission (BCDC) review in addition to local permits.

CMU (Commercial Mixed Use, 112 acres) is the primary zone for corridor retail, neighborhood-serving commercial, and mixed residential-over-commercial development. It covers the main arterial corridors and transit-adjacent areas. This district is the most viable location for ground-floor retail with residential above, small office buildings, and service commercial uses. Proximity to the Suisun City Capitol Corridor train station makes CMU parcels near the station eligible for reduced parking considerations and transit-oriented development programming.

The HR (Historic Residential, 18 acres) zone covers the preserved Victorian-era neighborhoods near the downtown core. Development in this zone must respect historic building patterns - lot coverage, setbacks, massing, and architectural character are all subject to design review. Demolition of contributing structures is typically discouraged or prohibited without findings. Investors considering residential projects in HR should budget for a historic resource assessment and an extended design review process.

The RM, RH1, and RH2 zones together cover about 185 acres and represent the primary opportunities for apartment and attached housing development. The Residential Mixed Use (RMU, 4.49 acres) zone adds a small mixed-use residential option. State ADU law applies citywide, permitting accessory dwelling units on all single-family RL parcels under standard state minimums. The city's RHNA obligations and housing element commitments also identify specific sites for higher-density rezoning.

Suisun City is served by the Capitol Corridor Amtrak line, with a station near the downtown core. The proximity of CMU, Commercial Office Residential (C/O/R, 12 acres), and Main Street Commercial (MC, 20 acres) zones to the station creates a viable transit-oriented development corridor. Retail, restaurant, professional office, and residential projects within walking distance of the station benefit from commuter foot traffic and are well-positioned for state funding programs that prioritize infill near transit.