Contra Costa County property record for 80 Corwin Dr, Alamo, CA 94507
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,668 sqft · built 1956 |
| Lot Size | 0.5 acres (21,780 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $1,425,000 (May 2005) |
| Tax Bill | $22,915 (2025) |
| Deeds & Mortgages | Dec 2025 Transfer Jul 2018 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 198-140-013-6 |
| Primary APN | 198-140-013-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 2,668 sqft Living Area |
| 1st Floor Area | 2,668 sqft |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1966 |
| Lot Area | 21,780 sqft (0.5 acres) |
| Garage Type | Attached |
| Garage Area | 528 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 80 CORWIN DR |
|---|---|
| City | ALAMO |
| State | CA |
| Zip | 94507-2104 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | RO SAN RAMON POR HEMME SUBN .50 AC |
| Legal Subdivision | FORD/SAN RAMON RHO |
| Legal Lot Number | 9,10 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 345204 |
Source: Contra Costa County records · APN 198-140-013-6
Assessment roll updated July 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 80 CORWIN DR, ALAMO, CA 94507-2104 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Date | Document |
|---|---|
| Dec 04, 2025 | Intrafamily Transfer, Transfer |
| Jul 19, 2018 | Quit Claim Deed, Transfer Quitclaim |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | May 13, 2005 · Amount on Record |
| Deed Sale | May 13, 2005 · Amount on Record |
| Deed Document Number | 2005171086 |
| Last Transfer Date | Jun 15, 2018 |
| Transfer Doc | 0000114910 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Dec 04, 2025 |
| Property Address | 80 CORWIN DR, ALAMO, CA 94507-2104 |
| Document Number | 0000135771 |
| Map Reference | VOL C PG 71 |
| Instrument Date | Dec 04, 2025 |
| Instrument | 2025- 135771 |
| Transaction Type | Transfer |
| Record Updated | Dec 18, 2025 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 80 CORWIN DR, ALAMO, CA 94507-2104 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 19, 2018 |
| Property Address | 80 CORWIN DR, ALAMO, CA 94507-2104 |
| Document Number | 0000114910 |
| Instrument Date | Jun 15, 2018 |
| Instrument | 114910 |
| Transaction Type | Transfer |
| Record Updated | Jul 25, 2018 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 80 CORWIN DR ALAMO CA 945072104, ALAMO, CA 94507-2104 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $2,060,017 (+2%) Land $1,279,609 Building $780,408 | |
| 2025 | $22,915.00 (+3.61%) | $2,019,625 (+4.04%) Land $1,254,519 Building $765,106 |
| 2023 | $22,116.00 (+0.74%) | $1,941,202 Land $1,205,805 Building $735,397 |
| 2022 | $21,954.00 |
Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 11 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 11 in force |
| Nearby Flood Claims | 5 (1993–2012) |
| Claims Outside the SFHA | 3 of 5 |
| Most Recent Claim | Dec 2012 · rainfall accumulation |
| Wildfire Risk | Moderate above 52% of the US · lower than 69% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
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.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
Based on FCC filings for 200 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | EAST BAY MUD serves 1,468,000 people |
|---|---|
| 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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.
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