Property Tax at Alameda Point: Land That's Brand New to the Tax Rolls

From Zero Tax Revenue to a First Assessment

Federal property is constitutionally exempt from state and local taxation, which means Naval Air Station Alameda -- for the full length of its active service, from its 1940 commissioning through its 1997 closure -- contributed nothing to Alameda County's or the City of Alameda's property tax base, no matter how much the land underneath it might otherwise have been worth. That changed only as the Navy transferred individual, environmentally cleared parcels to the City of Alameda starting in 2013, and again each time the city or a developer sold a lot into private ownership for construction. Every home built and sold at Bayport, Alameda Landing, or Site A represents a parcel entering Alameda County's tax rolls for the first time in its history, assessed at that first sale price under Proposition 13 rather than carrying forward any prior civilian assessment -- because there was never a prior civilian owner to assess. This is genuinely different from buying an existing home elsewhere in Alameda, where the seller's own decades-old assessed value is part of the property's history; at Alameda Point, in most cases, there is no such history to inherit or compare against.

How Proposition 13 Governs the Bill From Here Forward

Once a parcel is on the rolls, the same statewide rules apply as everywhere else in California. Proposition 13, approved by California voters in 1978, sets a property's assessed value at its purchase price (or the value of completed new construction) at the moment of that first sale, and limits how much that assessed value can grow afterward -- no more than 2% annually -- regardless of how much the home's actual market value moves, until the next change of ownership resets the clock again. For a new Alameda Point buyer, this means the first-year assessed value is essentially the purchase price itself, and future increases are capped at that 2% ceiling from there, exactly as they would be for any California home bought the same year. The practical difference from an older Alameda neighborhood isn't in how Prop 13 works -- it's that there's no multi-decade gap yet between what a longtime owner pays and what a brand-new buyer pays for a comparable home, since almost nobody at Alameda Point has owned long enough for that gap to have opened up.

The constitutional base rate is capped at 1% of assessed value; actual bills run higher almost everywhere in the state because of voter-approved local add-ons -- city and county bond measures, school district bonds and parcel taxes, and, on some new developments, a Mello-Roos Community Facilities District special tax layered on to fund the streets, sewers, and utilities the development itself needed built. Which specific add-ons apply to an Alameda Point parcel depends on its Alameda County tax rate area; the Alameda County Auditor-Controller's office maintains a tax-rate-area search tool for confirming the exact combination for a specific address.

The Alameda County Assessor and a Real, Sourced Rate Range

Alameda County is the correct assessor jurisdiction for every Alameda Point parcel -- there is no separate federal, city-only, or base-conversion-specific tax authority once a property has transferred into private ownership, despite the land's unusual history. Multiple Alameda County-focused property-tax guides put the practical combined ad-valorem rate most homeowners across the county pay -- 1% base plus local voter-approved add-ons -- somewhere between roughly 1.13% and 1.34% of assessed value, figures drawn from third-party aggregators rather than a single county-published flat number, and this page states that range honestly rather than picking whichever end sounds better. That range is a reasonable starting point for Alameda Point, but it does not account for any Mello-Roos special tax a specific development may carry, which is a real, additional line item this research pass could not confirm one way or the other for Bayport, Alameda Landing, or Site A specifically -- ask directly whether a specific parcel is inside an active Community Facilities District, and if so, get its current annual special-tax amount, before budgeting from the ad-valorem rate alone.

A Worked Example

Applying that county-wide rate range to Bayport's roughly $1.8 million recent median sale price (Redfin, early 2026): at the lower 1.13% end, a first-year property tax bill runs near $20,340; at the higher 1.34% end, closer to $24,120. At Alameda Landing's roughly $1.4 million median, the same range works out to about $15,820 to $18,760 a year. These are simple, illustrative rate-times-price calculations for planning purposes, not figures published by Alameda County and not inclusive of any possible Mello-Roos special tax -- the only number that should actually be used to budget a specific purchase is the Alameda County Assessor's own parcel-specific figure, pulled for the exact address under consideration.

Prop 19 Portability for a Relocating Buyer

Proposition 19, approved by California voters in 2020 and effective in phases from 2021, lets eligible homeowners age 55 or older, severely disabled homeowners, and wildfire or disaster victims transfer their existing, lower Prop 13 assessed value from a home they're selling to a replacement home anywhere in California -- generally up to three times for age- or disability-based moves -- rather than being reassessed at full market value on the new purchase. This can matter directly for a longtime California homeowner selling a modest, decades-owned home elsewhere in the state and buying new construction at Alameda Point: portability doesn't erase the fact that the new home is entering the tax rolls at a fresh, current-market assessed value on its own terms, but it can let that specific buyer bring forward a much lower legacy assessment instead of paying tax on the full new purchase price. Prop 19 also narrowed the older parent-child transfer exclusion, generally now requiring an inheriting child to use the home as their own primary residence to keep a parent's lower assessed value. This page doesn't restate every eligibility detail; confirm current Prop 19 rules and forms with the Alameda County Assessor's office before relying on it in a purchase decision.