Alviso, San Jose Real Estate & Homes for Sale

Where Alviso is and who governs it

Alviso is the City of San José’s northernmost neighborhood, at the southern edge of San Francisco Bay. The City’s historical Alviso Master Plan brochure describes a 10,730-acre planning area covering San José land north of Route 237, between Coyote Creek and the Guadalupe River. Most of that area is open land: salt ponds, a wildlife refuge and a marina park. Planning focuses on a 2,840-acre Urban Service Area, which splits into the historic "village" and a larger surrounding area of research-and-development sites, landfills, farmland and the regional wastewater plant.

Because Alviso is inside San José, city planning, building permits and code enforcement apply, not Santa Clara County’s unincorporated rules. The Alviso Master Plan is still listed among San José’s approved area and specific plans. Questions about what the plan allows on a given parcel go to the City’s General Plan staff. For the wider city picture, see our San Jose real estate guide and the Santa Clara County hub.

Water, sewer and utilities in Alviso

Alviso’s drinking water does not come from the retailer that serves much of San José. It comes from the San José Municipal Water System. The City says it added the North San José and Alviso areas to that system in 1966, alongside its Evergreen, Edenvale and Coyote service areas (San José Municipal Water). When you compare utility costs with homes elsewhere in San José, check which water retailer bills the address you’re looking at.

The San José–Santa Clara Regional Wastewater Facility sits within the Alviso planning area. City materials list it as one of the area’s existing land uses.

Homes, lots and land use in Alviso

The City’s brochure describes the village as a mix of homes, small shops and trucking uses. It also notes the western part of the village is a Historic District on the National Register of Historic Places. If a home or lot is in that district, check early whether historic review affects exterior changes, additions or new units. Ask San José Planning which historic-preservation rules apply to the parcel. Don’t assume the citywide ADU or lot-split process applies unchanged.

The same brochure flagged inconsistencies between zoning and General Plan designations in Alviso. Confirm both the zoning district and the General Plan designation for the exact parcel on the City’s maps before you price in any change of use. If the home is a historic structure, our guide to buying a historic home in California covers the records to request.

Hazards and insurance to check

Tidal flood exposure needs a property-specific review. The historical City brochure identified tidal flooding as a major issue. Valley Water’s current South San Francisco Bay Shoreline Project page describes a USACE-led partnership with Valley Water and the State Coastal Conservancy, with Phase I covering the Alviso/North San José area. Check the current reach status, completed works, accreditation and FEMA mapping; a design objective or an old completion schedule is not proof of current certified protection for a house.

A levee on the ground and a change to an official flood map are separate steps. To check an address:

• Flood zone: look up the current Flood Insurance Rate Map panel on the FEMA Flood Map Service Center and ask your lender whether flood insurance is required. Our flood insurance guide explains the options.
• Fire hazard zone: San José is a Local Responsibility Area. The State Fire Marshal’s Fire Hazard Severity Zone page says LRA maps went out to cities in 2025 phases and directs owners to their local jurisdiction.
• Earthquake-related ground failure: review the seller’s Natural Hazard Disclosure report and consider earthquake insurance.

Getting around from Alviso

The City’s brochure notes good freeway access from Route 237 and Interstate 880, with Route 237 also a noise source near the village. Bus routes and schedules change, so check current service in VTA’s trip planner before you count on transit.

Local rules buyers and owners should know

• San José city rules apply. That includes San José’s rent and tenant-protection programs for qualifying rentals; see our San José rent ordinance guide for investors.
• City transfer tax. San José collects its own real property transfer tax on qualifying sales. Rates and thresholds are covered in our Santa Clara County city transfer tax guide.
• Property tax. Supplemental and annual bills come from Santa Clara County; see the Santa Clara County property tax page.
• Historic district review may apply in the western village, as noted above.

Alviso real estate: questions people ask

Is Alviso its own city?

No. Alviso is a neighborhood of the City of San José. San José’s planning, permitting and code enforcement apply, under the Alviso Master Plan. Property tax still comes from Santa Clara County, as it does everywhere else in San José. Confirm the parcel’s zoning and General Plan designation with the City before you plan any change.

Who provides water in Alviso?

The San José Municipal Water System, a city-run utility. It has served North San José and Alviso since 1966, according to the City. Much of the rest of San José is served by other water retailers, so check which one bills the specific address before you compare utility costs.

Do I need flood insurance for an Alviso home?

It depends on the property’s current FEMA flood zone and on your lender. Check the Shoreline Project’s current reach status and FEMA accreditation separately from the property’s official flood-map designation; neither a project announcement nor visible levee establishes the house’s insurance requirement. Look up the address on the FEMA Flood Map Service Center and get an insurance quote during your contingency period.

Can I add an ADU or split a lot in Alviso?

Possibly, but check first. Part of the village is a National Register Historic District, and the historical master-plan brochure identified zoning/General Plan inconsistencies as an issue to address. That does not establish a current defect on a particular parcel. Ask San José Planning which rules apply to the exact parcel before you count on extra units.

Sources for this section

1. City of San José, Alviso Master Plan public information brochure — https://sanjoseca.gov/home/showpublisheddocument/15457/636681323318930000
2. City of San José, Area & Specific Plans — https://www.sanjoseca.gov/your-government/departments-offices/planning-building-code-enforcement/planning-division/citywide-planning/area-specific-plans
3. City of San José, About San José Municipal Water System — https://sanjoseca.gov/your-government/departments-offices/environmental-services/water-utilities/drinking-water/about-san-jose-municipal-water-system
4. Valley Water, San Francisco Bay Shoreline Project fact sheet (March 2025) — https://assets.valleywater.org/files/2025_03_25_San%20Francisco%20Bay%20Shoreline%20Project_Fact%20Sheet_JM_v4.pdf
5. CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones — https://osfm.fire.ca.gov/what-we-do/community-wildfire-preparedness-and-mitigation/fire-hazard-severity-zones
6. FEMA Flood Map Service Center — https://msc.fema.gov/portal/home

Luxury homes and estates in Alviso

San José’s Alviso Master Plan brochure describes a small historic village surrounded by baylands, salt ponds, a wildlife refuge, research-and-development land and regional infrastructure. For a buyer looking for a distinctive property here, the City’s plans point to two things: older homes in the village’s National Register Historic District, and a setting at the edge of the Bay. Each comes with its own checks before you pay a premium.

• Historic status. If the home is in the historic district, ask San José Planning, early, which review applies to exterior changes, additions or a second unit. Our guide to buying a historic home in California lists the records to request.
• Flood protection and insurance. Review the current status and certified reach of Valley Water’s Shoreline Project alongside the FEMA flood map, the loan conditions and the insurer’s underwriting. A project design standard does not establish that a particular property has completed or certified flood protection. Get flood and property quotes during your contingency period. Our guides to insuring a high-value home and the California FAIR Plan cover the property side.
• Permit history. Ask San José for the permit file on additions and remodels, and confirm the current zoning and General Plan designation. The historical master-plan brochure identified inconsistencies as an issue to address; it does not prove a current defect on the property.

For larger homes and estate properties across the county, see Santa Clara County luxury homes.

Ask Diamond Real Estate Group which permitted private-marketing options fit your property, goals and the applicable MLS rules. Availability of any particular listing is not guaranteed.

Sources for this section

1. City of San José, Alviso Master Plan public information brochure: https://sanjoseca.gov/home/showpublisheddocument/15457/636681323318930000
2. Valley Water, San Francisco Bay Shoreline Project fact sheet (March 2025): https://assets.valleywater.org/files/2025_03_25_San%20Francisco%20Bay%20Shoreline%20Project_Fact%20Sheet_JM_v4.pdf
3. FEMA Flood Map Service Center: https://msc.fema.gov/portal/home