Alamo is one of the East Bay's luxury markets, and it has no city government. It sits between Walnut Creek and Danville along I-680, but it is an unincorporated community governed by Contra Costa County. Planning, permits and code enforcement all run through the county.
Here is what that means for a buyer and what I would check before writing an offer in Alamo.
Who governs Alamo?
Alamo is in Contra Costa County's Supervisorial District 2. The Alamo Municipal Advisory Council, established in 2009, advises the Board of Supervisors on services such as parks and recreation, lighting and landscaping, public works, code enforcement, land use and planning, and transportation. The council is advisory: decisions are made by the county.
Who handles permits and code enforcement?
The county. According to Contra Costa County, code enforcement in Alamo is managed exclusively by the County Department of Conservation and Development, and building permits for Alamo homes are issued by the county. If you plan an addition, a pool or a second unit, you will be working with county planning and building staff, not a town hall.
Who provides police service?
Alamo is patrolled by the Contra Costa County Sheriff's Office. The county has also been working on consolidating Alamo's two police service areas, known as P-2B and P-5, into a single Alamo Police District through the Local Agency Formation Commission. Look for any police district charges on the tax bill for the specific parcel.
What should you check before buying in Alamo?
- County permit history for past additions, pools and remodels.
- The tax bill, line by line, for police district and other special assessments.
- Any HOA, since some Alamo neighborhoods have associations and many do not.
- Plans for your own project. Talk to county planning before you commit if the value depends on adding space.
- The school assignment, confirmed with the San Ramon Valley Unified School District for the address.
For more on the community, see my Alamo neighborhood overview. If you are also looking in Blackhawk, it is another unincorporated community with its own rules.
Frequently asked questions about buying in Alamo
Is Alamo a city?
No. Alamo is an unincorporated community governed by Contra Costa County, located between Walnut Creek and Danville.
Who issues building permits in Alamo?
Contra Costa County. The county's Department of Conservation and Development also handles code enforcement in Alamo.
What is the Alamo Municipal Advisory Council?
A council established in 2009 that advises the County Board of Supervisors on local services and land use in Alamo. It is advisory, and the county makes the decisions.
Who provides police service in Alamo?
The Contra Costa County Sheriff's Office. The county has been consolidating Alamo's police service areas, P-2B and P-5, into one Alamo Police District.
Which supervisor represents Alamo?
Alamo is in Contra Costa County's Supervisorial District 2.
The Bottom Line on Buying in Alamo
In Alamo, the county is your city hall. Check the permit history with the county, read the tax bill for district charges, and if your plans depend on adding space, talk to county planning before you commit. In a luxury market, that homework protects both your budget and your plans.
Buying or selling in Alamo?
Send me an address and I will help you pull the permit history and tax bill before you make an offer.
Find out what your Alamo home is worth
Or call or text 925-250-9611.
Sources
Contra Costa County, Alamo, for the Municipal Advisory Council, supervisorial district and code enforcement. Contra Costa County, Alamo Police District, for the police district consolidation (all checked September 2026).
Jaz Chand, Broker Associate | Homes With Accent
The Jaz Team at Merrill Signature Properties | DRE #01751823
Phone/Text: 925-250-9611 | Jaz@HomesWithAccent.com
General information only, not legal advice. County rules, districts and assessments change. Confirm them for a specific property with Contra Costa County before buying or planning a project.