Real estate appraisals in Concord

The market

Concord is the most populous city in Contra Costa County, incorporated February 5, 1905, occupying roughly 30.5 square miles of valley floor and low foothills north and northwest of Mount Diablo, about 29 miles northeast of San Francisco. It is fundamentally a postwar commuter suburb, the population went from under 7,000 to over 36,000 during the 1950s, built out in tract subdivisions around a small historic core at Todos Santos Plaza, with two BART stations, a regional mall, and a large closed Navy base on its northern edge. This is not a boutique or coastal market: it is a large, middle-market inland city where the interesting valuation questions come from local regulation, seismic zoning, and one very large pending land supply, not from scarcity of the housing itself.

What is built here

The dominant stock is 1950s–1970s single-story tract housing on flat, regular interior lots: Dana Estates, Monte Gardens, the neighborhoods around Sunvalley, and the Clayton Valley side: reflecting the decade in which Concord's population multiplied several times over. Layered onto that are 1960s–1980s garden apartment and small-complex multifamily, heavily concentrated along the Monument Corridor and the arterial streets, which is exactly the vintage that falls under the city's rent stabilization ordinance. Newer product is bimodal: 1980s–2000s hillside and semi-custom subdivisions on the southeastern foothill edge toward Mount Diablo and Lime Ridge, where slope, geology, and site development cost drive land value, and recent higher-density infill near the downtown Concord BART station and Todos Santos. The far north end is the former Concord Naval Weapons Station and the Army's Military Ocean Terminal Concord, which is not housing at all.

What changes a valuation in Concord

Specific to this submarket. Every regulatory conclusion below still has to be re-verified by parcel and as of the effective date of value.

Concord Residential Tenant Protection Program. Local rent stabilization and just cause (CMC Ch. 19.40)

Concord adopted its own rent cap, effective April 19, 2024 and amended in 2025. As of August 1, 2025 the allowable annual increase for covered units is a flat 5%, replacing the earlier formula of 3% or 60% of CPI, whichever was lower; because that figure is set by ordinance and has already been changed once, confirm the allowable increase actually in effect with the City of Concord Rent Program as of the effective date of value. Full rent stabilization applies to multifamily units with a certificate of occupancy before February 1, 1995; single-family homes and condos are pulled in for just-cause eviction purposes when the owner rents three or more units in Concord, so an owner renting one or two such units falls outside just-cause coverage. That three-unit threshold governs just-cause coverage only. The program's annual registration and per-unit fee obligations are set separately, so registration status and fees must be confirmed with the Rent Program for the subject rather than assumed away for a small owner, and they belong in the operating expense reconstruction. For income-approach work this is not background color. It caps the achievable growth rate of the income stream and therefore the terminal value, forces the appraiser to verify actual contract rents against the allowable-increase history rather than assuming market rent, and makes below-market in-place rents a durable value deduction rather than a curable one. Petitions for fair return and pass-throughs run through the city's rent program, not the state.

Alquist-Priolo Earthquake Fault Zoning over the Concord fault

The Concord fault trends roughly 11 miles north-northwest from the Walnut Creek area to Suisun Bay, passing beneath Concord, and creeps aseismically at roughly 3–5 mm per year, visibly offsetting curbs, sidewalks and structures along its trace. Alquist-Priolo Earthquake Fault Zone boundaries are delineated and periodically revised by the California Geological Survey rather than by the city, so the controlling question in any assignment is what the current CGS regulatory map shows for the specific parcel as of the effective date of value. Check EQ Zapp or the current regulatory map rather than relying on an older map, an older report, or a prior disclosure. Inside a delineated zone, projects for human occupancy generally require a fault investigation by a California-licensed Professional Geologist, subject to the statutory exemption for single-family wood- or steel-frame dwellings of two stories or less that are not part of a development of four or more units; local agencies may require investigation regardless. Zone status is also a mandatory Natural Hazard Disclosure item on sale. Practically: a parcel swept into a zone can lose buildable area or subdivision yield outright, entitlement cost and timeline rise, and existing improvements sitting on a creeping trace carry real, progressive structural distress that is a physical-deterioration and marketability issue, not a hypothetical one.

Concord Reuse Project. The former Concord Naval Weapons Station inland area

The Concord Naval Weapons Station was designated for closure under the 2005 BRAC round, with the inland area, about 5,028 acres, declared surplus and the City of Concord designated the federally recognized Local Reuse Authority thereafter. The city is set to acquire roughly 2,422 acres from the Navy under an approved financial agreement, with Brookfield Properties as master developer and plans for more than 12,000 homes; a separate large acreage has been committed to regional park use as Thurgood Marshall Regional Park. At roughly 2,422 acres under a single reuse authority, this is among the largest single land-supply pipelines in the Bay Area, and it is not yet fully entitled. For land and development valuation it changes the highest-and-best-use analysis directly, absorption assumptions, phasing, and the reasonableness of speculative land pricing elsewhere in north Concord all depend on the timing of this project, which has already changed master developers more than once. Confirm the current master developer, entitlement stage, and land-transfer status with the city before relying on any of it. For residential work it is a long-horizon supply factor an appraiser should be aware of and should not silently capitalize into current value.

Buchanan Field Airport and the Contra Costa Airport Land Use Commission overlay

Buchanan Field is a county-owned general aviation and business reliever airport roughly a mile and a half west-northwest of downtown Concord, operating under a county noise ordinance that restricts certain aircraft. The Contra Costa Airport Land Use Commission administers an Airport Land Use Compatibility Plan whose airport influence area extends miles from the runway ends and imposes compatibility zones governing permitted use, residential density, structure height, and noise exposure, with ALUC review of land use applications inside that area. For a commercial or infill residential site in west and central Concord this can cap achievable density and building height independent of the underlying zoning, a direct hit to residual land value, and for existing residential it puts properties in a defined noise-exposure and overflight context that supports paired- sales analysis rather than guesswork. Compatibility plans are amended over time, so read the controlling compatibility zone and its standards off the current ALUCP for the specific parcel.

Fire Hazard Severity Zones at the southeastern foothill and Lime Ridge interface

Concord's built area is mostly flat valley floor, but its southeastern edge meets open grassland and oak foothills at Lime Ridge and the Mount Diablo approaches, and that wildland interface is where fire hazard mapping matters here. The Office of the State Fire Marshal's updated Fire Hazard Severity Zone maps for Local Responsibility Areas, issued in 2025 and adopted by local jurisdictions, map Moderate and High zones inside city limits for the first time in addition to Very High, so a parcel can carry a designation it did not carry under the prior maps. The consequences are tier-specific rather than uniform: California Building Code Chapter 7A ignition-resistant construction standards attach to new construction and substantial rebuilds in the designated zones and raise replacement cost in the cost approach; statutory defensible-space and vegetation-management obligations attach in the higher-tier zones; and the designation is a Natural Hazard Disclosure item on sale. The larger practical effect is insurance, admitted-carrier availability at the wildland edge has tightened and FAIR Plan plus difference-in- conditions coverage carries a materially higher expense line, which is a real deduction in income work and a marketability factor in sales comparison, though carriers underwrite from their own wildfire models rather than from the hazard map itself. Do not assign a tier by neighborhood reputation: check the specific parcel against the City of Concord's adopted map and the state map as of the effective date of value.

The February 1, 1995 construction-date cliff in the multifamily stock

Because Concord's rent stabilization tracks the Costa-Hawkins exemption date, two physically comparable apartment buildings a block apart can sit in entirely different regulatory regimes based solely on certificate-of-occupancy date. Concord's apartment inventory is heavily weighted to the 1960s–1980s garden-apartment vintage that falls on the regulated side. The appraiser must confirm the certificate of occupancy date as a matter of course, cannot treat pre-1995 and post-1995 sales as directly comparable on a GRM or price-per-unit basis without adjustment, and should expect the capitalization rate and the sales-comparison unit of comparison to differ between the two cohorts. Single- family and condominium rentals sit in a third category depending on how many units the owner holds in Concord.

Commercial and income property

Concord has a substantial non-residential base for an inland suburb. Retail is anchored by Sunvalley Shopping Center, a regional mall, plus the Todos Santos Plaza restaurant and small-shop district downtown and strip retail along the arterials. Healthcare is a major employer through John Muir Medical Center's Concord campus and its associated medical office demand. Downtown Concord carries a stock of mid-rise office and former large- employer back-office space within walking distance of the Concord BART station, and the Downtown Concord Specific Plan area targets higher-density transit-oriented redevelopment there. Light industrial, flex, and service-commercial cluster around Buchanan Field Airport and the northern industrial belt, where the ALUC compatibility overlay and the airport's noise ordinance are live constraints on use and height. The Army's Military Ocean Terminal Concord on the tidal frontage remains an operating military ammunition seaport with rail and pier infrastructure, and the adjacent Concord Reuse Project contemplates significant commercial square footage alongside its housing. Buildings in the older downtown and along the arterials are old enough that seismic condition, and, on parcels sitting over the creeping fault trace, creep-related distress, is a real cost- approach and marketability question.

Assessment, appeals, and venue

Concord is an incorporated city (February 5, 1905) in Contra Costa County. Property tax appeal work runs through the Contra Costa County Assessor at 2530 Arnold Drive, Suite 100, Martinez, with appeals heard by the Assessment Appeals Board and filed at the Clerk of the Board of Supervisors, 1025 Escobar Street, 1st Floor, Martinez, during the July 2–November 30 regular period. Litigation, eminent domain, and probate matters are venued in the Superior Court of California, County of Contra Costa, whose civil and general courthouses are in Martinez. The Wakefield Taylor Courthouse at 725 Court Street and the A.F. Bray Courthouse at 1020 Ward Street, with family law at the Spinetta Family Law Center, 751 Pine Street. Rent stabilization petitions, registration, and just-cause matters are handled by the City of Concord Rent Program rather than the county. Land use entitlement, the Downtown Concord Specific Plan area, and the Concord Reuse Project all run through the City of Concord Planning Division; airport-area applications are additionally reviewed by the Contra Costa County Airport Land Use Commission. Concord is not within California Coastal Act jurisdiction and carries no Coastal Commission overlay; shoreline development on the city's Suisun Bay frontage is instead subject to review by the San Francisco Bay Conservation and Development Commission, whose jurisdiction covers the Bay itself plus a 100-foot shoreline band. Confirm the mapped extent with BCDC for the specific parcel. Every regulatory item on this page moves on its own schedule: the rent program's allowable increase, the Alquist-Priolo zone maps, the reuse project's developer and entitlement status, the fire hazard severity zone maps, and the airport land use compatibility plan. Verify each with the named agency as of the effective date of value rather than relying on this page.

Sources

Checked by a reviewer who did not write the research. Where a claim could not be confirmed against a primary source it was removed rather than softened.

1. https://en.wikipedia.org/wiki/Concord,_California
2. https://www.cityofconcord.org/1172/Rent-Stabilization-and-Just-Cause-for-Ev
3. https://www.codepublishing.com/CA/Concord/html/Concord19/Concord1940.html
4. https://www.conservation.ca.gov/cgs/alquist-priolo
5. https://www.conservation.ca.gov/cgs/geohazards/eq-zapp
6. https://www.conservation.ca.gov/cgs/publications/preliminary-releases
7. https://en.wikipedia.org/wiki/Concord_Fault
8. https://en.wikipedia.org/wiki/Concord_Naval_Weapons_Station
9. https://www.concordreuseproject.org/
10. https://en.wikipedia.org/wiki/Buchanan_Field_Airport
11. https://osfm.fire.ca.gov/what-we-do/community-wildfire-preparedness-and-mitigation/fire- hazard-severity-zones
12. https://bcdc.ca.gov/
13. https://www.contracosta.ca.gov/191/Assessment-Appeals
14. https://contracosta.courts.ca.gov/locations
15. https://www.cityofconcord.org/164/Planning