Contra Costa County property record for 509 Ramos Ranch Rd, Oakley, CA 94561
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,508 sqft · built 2023 |
| Lot Size | 0.071 acres (3,108 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $722,500 (Aug 2023) |
| Tax Bill | $12,310 (2025) |
| Deeds & Mortgages | Aug 2023 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 033-470-056-4 |
| Primary APN | 033-470-056-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,508 sqft Living Area |
| 1st Floor Area | 1,076 sqft |
| 2nd Floor Area | 1,432 sqft |
| Year Built | Built 2023 |
|---|---|
| Effective Year Built | Effective 2023 |
| Lot Area | 3,108 sqft (0.071 acres) |
| Garage Type | Attached |
| Garage Area | 439 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 509 RAMOS RANCH RD |
|---|---|
| City | OAKLEY |
| State | CA |
| Zip | 94561-2794 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T9498 L56 |
| Legal Subdivision | ACACIA SUB 9498 |
| Legal Tract | 9498 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 302012 |
509 Ramos Ranch Rd is owned and occupied by two individuals who bought it in August 2023.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 509 RAMOS RANCH RD, OAKLEY, CA 94561-2794 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Aug 23, 2023 · Amount on File |
| Deed Sale | Aug 23, 2023 · Amount on File |
| Deed Document Number | 202381413 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 23, 2023 |
| Property Address | 509 RAMOS RANCH RD, OAKLEY, CA 94561-2794 |
| Document Number | 0000081413 |
| Map Reference | MB 543 PG 44-49 |
| Instrument Date | Aug 4, 2023 |
| Instrument | 2023-081413 |
| Transaction Type | Transfer |
| Record Updated | Sep 1, 2023 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 509 RAMOS RANCH RD, OAKLEY, CA 94561-2794 |
| Document Number | 0000081414 |
|---|---|
| Date | Aug 23, 2023 |
| Instrument | 2023-081414 |
| Name | US BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2053 |
The 2025 property tax bill for 509 Ramos Ranch Rd was $12,310 with a homeowner's exemption.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Oakley City |
| Secondary School District | Liberty Union High School District (09 - 12) |
| Elementary School District | Oakley Union Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $737,019 (+2%) Land $182,070 Building $554,949 | |
| 2025 | $12,310.00 Homeowner's exemption | $722,568 Land $178,500 Building $544,068 |
| 2023 | $5,456.00 (+51.14%) | $164,407 Land $164,407 |
| 2022 | $3,610.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 509 Ramos Ranch Rd in Zone X, an area of minimal flood risk.
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 |
| Nearby Flood Policies | 1 in force |
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 509 Ramos Ranch Rd is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
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 | DIABLO WATER DISTRICT serves 47,158 people · EPA ID CA0710007 |
|---|---|
| Water Source | Purchased surface water from RANDALL-BOLD WATER TREATMENT PLANT |
| Last State Inspection | Jan 2024 |
| Also Mapped Here | CONTRA COSTA WATER DISTRICT |
| Lead | 2 ppb (2020–2022) 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.
Source: FCC Broadband Data Collection, based on 637 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 2,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: T-Mobile.
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