Contra Costa County property record for 3183 Roundhill Rd, Alamo, CA 94507
| Property Type | Commercial Office |
|---|---|
| Details | 1,098 sqft · built 1961 |
| Lot Size | 0.459 acres (20,000 sqft) |
| Owner | Company Name on File |
| Tax Bill | $7,053 (2025) |
| Deeds & Mortgages | Dec 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 193-241-006-9 |
| Primary APN | 193-241-006-9 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 1,098 sqft Gross Area |
| 1st Floor Area | 1,098 sqft |
| Year Built | Built 1961 |
|---|---|
| Effective Year Built | Effective 1961 |
| Lot Area | 20,000 sqft (0.459 acres) |
| Street Address | 3183 ROUNDHILL RD |
|---|---|
| City | ALAMO |
| State | CA |
| Zip | 94507 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Local Zoning Code | R15 |
| Legal Description | TRACT 2630 LOT 66 EX 1/2 MR |
| Legal Subdivision | SAN RAMON RHO |
| Legal Tract | 2630 |
| Legal Lot Number | 66 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 346102 |
3183 Roundhill Rd, a commercial property, is owned by a company that acquired it in November 2019.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 3169 ROUNDHILL RD, ALAMO, CA 94507-1735 |
| Owner Type | Company |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Nov 20, 2019 |
| Transfer Doc | 0000230550 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Dec 23, 2019 |
| Property Address | 3183 ROUNDHILL RD, ALAMO, CA 94507 |
| Document Number | 0000230550 |
| Instrument Date | Nov 20, 2019 |
| Instrument | 230550 |
| Transaction Type | Transfer |
| Record Updated | Jan 7, 2020 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 3169 ROUNDHILL RD ALAMO CA 945071735, ALAMO, CA 94507-1735 |
The 2025 property tax bill for 3183 Roundhill Rd was $7,053.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $292,821 (+2%) Land $263,555 Building $29,266 | |
| 2025 | $7,053.00 | $287,081 Land $258,388 Building $28,693 |
| 2023 | $6,785.00 (+2.49%) | $275,935 Land $248,355 Building $27,580 |
| 2022 | $6,620.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 3183 Roundhill Rd in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2002.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 1 (2002) |
| Most Recent Claim | Dec 2002 · rainfall accumulation |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 3183 Roundhill Rd is moderate, ranking above 51% of the US, with a 0.09% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 51% of the US · lower than 70% of California |
|---|---|
| Wildfire Likelihood | 0.09% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 181 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
May also be available: T-Mobile.
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