Contra Costa County property record for 20 Mount Rainier Ct, Clayton, CA 94517
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,822 sqft · built 1971 |
| Lot Size | 0.24 acres (10,450 sqft) |
| Owner | Company Name on Record |
| Last Sale | $700,000 (May 2009) |
| Tax Bill | $11,299 (2025) |
| Deeds & Mortgages | Dec 2022 Transfer Dec 2022 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-142-017-1 |
| Primary APN | 119-142-017-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 2,822 sqft Living Area |
| 1st Floor Area | 1,429 sqft |
| 2nd Floor Area | 1,393 sqft |
| Year Built | Built 1971 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | Cluster |
| Lot Area | 10,450 sqft (0.24 acres) |
| Garage Type | Attached |
| Garage Area | 506 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 20 MT RAINIER CT |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1510 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T04011 L0027 B EX 1/2 MR |
| Legal Subdivision | SUBDIVISION 4011 |
| Legal Tract | 04011 |
| Legal Lot Number | 27 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4005 |
| Census Tract | 355306 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 20 MT RAINIER CT, CLAYTON, CA 94517-1510 |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Dec 27, 2022 | Intrafamily Transfer, Transfer |
| Dec 2, 2022 | Deed of Trust, Mortgage · Conventional Mortgage BETTER MORTGAGE CORPORATION |
| Dec 4, 2020 | Deed of Trust, Mortgage · Conventional Mortgage BETTER MTG CORP ISAOA |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 8, 2009 · Amount on Record |
| Deed Sale | May 8, 2009 · Amount on Record |
| Prior Sale | Apr 21, 1997 · Amount on Record |
| Deed Document Number | 2009104199 |
| Last Transfer Date | Dec 21, 2022 |
| Transfer Doc | 0000188399 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Dec 27, 2022 |
| Property Address | 20 MT RAINIER CT, CLAYTON, CA 94517-1510 |
| Document Number | 0000188399 |
| Map Reference | MB 134 PG 6 |
| Instrument Date | Dec 21, 2022 |
| Instrument | 2022-188399 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 20 MT RAINIER CT, CLAYTON, CA 94517-1510 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 20 MT RAINIER CT, CLAYTON, CA 94517-1510 |
| Transaction Type | Mortgage |
| Record Updated | Dec 12, 2022 |
| Name | Verified Name |
|---|---|
| Address | 20 MT RAINIER CT, CLAYTON, CA 94517-1510 |
| Document Number | 0000179942 |
|---|---|
| Date | Dec 2, 2022 |
| Instrument | 2022-179942 |
| Name | BETTER MORTGAGE CORPORATION |
|---|---|
| Type | Mortgage Company |
| Address | NEW YORK, NY 10271 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 337 Months |
| Due | Jan 1, 2051 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 20 MT RAINIER CT, CLAYTON, CA 94517-1510 |
| Document Number | 0000316095 |
| Instrument Date | Dec 4, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Dec 29, 2020 |
| Title Company | NOT AVAILABLE |
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 20 MT RAINIER CT CLAYTON CA 945171510, CLAYTON, CA 94517-1510 |
| Document Number | 0000316095 |
|---|---|
| Date | Dec 16, 2020 |
| Instrument | 316095 |
| Name | BETTER MTG CORP ISAOA |
|---|---|
| Address | NEW YORK, NY 10271 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Dec 15, 2050 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Clayton City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $919,447 (+2%) Land $492,562 Building $426,885 | |
| 2025 | $11,299.00 (+4.36%) | $901,419 (+4.04%) Land $482,904 Building $418,515 |
| 2023 | $10,827.00 (+1.26%) | $866,417 Land $464,153 Building $402,264 |
| 2022 | $10,692.00 |
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
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 56% of the US · lower than 66% of California |
|---|---|
| Wildfire Likelihood | 0.1% 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 | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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 420 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
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