Contra Costa County property record for 601 Guaymas Ct, San Ramon, CA 94583
| Property Type | Townhouse |
|---|---|
| Details | 3 bd · 2.5 ba · 1,790 sqft · built 1978 |
| Lot Size | 0.05 acres (2,184 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,050,000 (Oct 2023) |
| Tax Bill | $12,551 (2025) |
| Deeds & Mortgages | Oct 2023 Sale & Mortgage Jan 2018 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 209-390-023-7 |
| Primary APN | 209-390-023-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,790 sqft Living Area |
| Gross Area | 2,238 sqft |
| 1st Floor Area | 892 sqft |
| 2nd Floor Area | 898 sqft |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Colonial |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 2,184 sqft (0.05 acres) |
| Garage Type | Attached |
| Garage Area | 448 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 601 GUAYMAS CT |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94583-2114 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | P-1 |
| Legal Description | T04952 L0266 B |
| Legal Subdivision | SUBDIVISION 4952 |
| Legal Tract | 04952 |
| Legal Lot Number | 266 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 345116 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 601 GUAYMAS CT, SAN RAMON, CA 94583-2114 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Date | Document |
|---|---|
| Oct 5, 2023 | Grant Deed, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Jan 16, 2018 | Grant Deed, Transfer · ARM EAST WEST BANK |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 5, 2023 · Amount on Record |
| Deed Sale | Oct 5, 2023 · Amount on Record |
| Prior Sale | Jan 16, 2018 · Amount on Record |
| Deed Document Number | 202397209 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 5, 2023 |
| Property Address | 601 GUAYMAS CT, SAN RAMON, CA 94583-2114 |
| Document Number | 0000097209 |
| Map Reference | MB 199 PG 32 |
| Instrument Date | Sep 20, 2023 |
| Instrument | 2023-097209 |
| Transaction Type | Transfer |
| Record Updated | Oct 13, 2023 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| 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 | 601 GUAYMAS CT, SAN RAMON, CA 94583-2114 |
| Document Number | 0000097210 |
|---|---|
| Date | Oct 5, 2023 |
| Instrument | 2023-097210 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Nov 1, 2053 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 16, 2018 |
| Property Address | 601 GUAYMAS CT, SAN RAMON, CA 94583-2114 |
| Document Number | 0000005913 |
| Map Reference | MB 199 PG 32 |
| Instrument Date | Jan 9, 2018 |
| Instrument | 2018-005913 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | CHICAGO TITLE SIMPLIFILE |
| Amount | Amount Recorded |
|---|---|
| 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 |
|---|---|
| Address | 601 GUAYMAS CT, SAN RAMON, CA 94583-2114 |
| Document Number | 0000005914 |
|---|---|
| Date | Jan 16, 2018 |
| Instrument | 2018-005914 |
| Name | EAST WEST BANK |
|---|---|
| Type | Bank |
| Type | ARM |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 1, 2048 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 4.87% |
| Type Change Date | Feb 1, 2023 |
| Change Frequency | Annually |
| Min Rate At Change | 3.25% |
| Max Rate At Change | 6.87% |
| Index | 1-Year CMT |
| Max Rate | 10.8% |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | San Ramon City |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $930,000 (-13.17%) Land $575,714 Building $354,286 | |
| 2025 | $12,551.00 (+24.61%) Homeowner's exemption | $1,071,000 (+28.01%) Land $663,000 Building $408,000 |
| 2023 | $10,072.00 (+0.75%) | $836,636 Land $442,925 Building $393,711 |
| 2022 | $9,997.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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 Claims | 1 (1998) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jan 1998 · 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 62% of the US · lower than 77% of California |
|---|---|
| Wildfire Likelihood | 0.05% 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 | 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 547 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| AT&T DSL | 100 / 20 |
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