San Bernardino County property record for 10079 Keystone Ct, Rancho Cucamonga, CA 91737
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4 ba · 3,042 sqft · built 1989 |
| Lot Size | 0.614 acres (26,750 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $485,000 (Dec 2011) |
| Tax Bill | $7,214 (2025) |
| Deeds & Mortgages | Feb 2021 Mortgage Aug 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1074-061-07-0000 |
| Primary APN | 1074-061-07-0000 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 3,042 sqft Living Area |
| Gross Area | 3,640 sqft |
| 1st Floor Area | 1,818 sqft |
| 2nd Floor Area | 1,224 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1989 |
|---|---|
| Effective Year Built | Effective 1989 |
| Architectural Style | Modern |
| Construction Type | Frame |
| Roof Material | Tile |
| Lot Area | 26,750 sqft (0.614 acres) |
| Garage Type | Attached |
| Garage Area | 598 sqft |
| Parking Spaces | 2 Parking Spaces |
| Pool Type | Pool with Hot Tub/Spa |
|---|---|
| Porch | Patio/Porch |
| Porch Area | 234 sqft |
| Patio Area | 234 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 10079 KEYSTONE CT |
|---|---|
| City | RANCHO CUCAMONGA |
| State | CA |
| Zip | 91737-6832 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TRACT 12902 LOT 20 |
| Legal Subdivision | TRACT NO 12902 |
| Legal Tract | 12902 |
| Legal Block | 1 |
| Legal Lot Number | 20 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 1 |
| Census Block | 1018 |
| Census Tract | 2017 |
Source: San Bernardino 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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 10079 KEYSTONE CT, RANCHO CUCAMONGA, CA 91737-6832 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Feb 26, 2021 | Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC |
| Aug 18, 2020 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Dec 1, 2011 · Amount on File |
| Deed Sale | Dec 1, 2011 · Amount on File |
| Prior Sale | Jul 20, 1995 · Amount on File |
| Deed Document Number | 2011509361 |
| Prior Transfer Date | Aug 31, 2006 |
| Prior Transfer Doc | 0000624219 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN BERNARDINO CA |
| Property Address | 10079 KEYSTONE CT, RANCHO CUCAMONGA, CA 91737-6832 |
| Transaction Type | Mortgage |
| Record Updated | Mar 10, 2021 |
| Title Company | CHICAGO TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 10079 KEYSTONE CT, RANCHO CUCAMONGA, CA 91737-6832 |
| Document Number | 0000092240 |
|---|---|
| Date | Feb 26, 2021 |
| Instrument | 2021-0092240 |
| Name | QUICKEN LOANS LLC |
|---|---|
| Type | Mortgage Company |
| Address | DETROIT, MI 48226 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 181 Months |
| Due | Mar 1, 2036 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN BERNARDINO CA |
| Property Address | 10079 KEYSTONE CT, RANCHO CUCAMONGA, CA 91737-6832 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | CHICAGO TITLE COMPANY |
| Name | Verified Name |
|---|
| Document Number | 0000291918 |
|---|---|
| Date | Aug 18, 2020 |
| Instrument | 2020-0291918 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 181 Months |
| Due | Sep 1, 2035 |
Source: San Bernardino County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Bernardino County |
| Municipality | Rancho Cucamonga City |
| Elementary School District | Alta Loma Elementary School District (KG - 08) |
| Secondary School District | Chaffey Joint Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $649,866 (+2%) Land $155,341 Building $494,525 | |
| 2025 | $7,214.00 (+4.84%) | $637,123 (+4.04%) Land $152,295 Building $484,828 |
| 2023 | $6,881.00 (+0.23%) | $612,383 Land $146,381 Building $466,002 |
| 2022 | $6,865.00 |
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 4 (1981–2016) |
| Claims Outside the SFHA | 2 of 4 |
| Most Recent Claim | Dec 2016 · other causes |
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 | High above 88% of the US · above 69% of California |
|---|---|
| Wildfire Likelihood | 1% annual chance |
| Exposure | Direct burnable vegetation |
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 | CUCAMONGA VALLEY WATER DISTRICT serves 213,375 people · EPA ID CA3610018 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Feb 2025 |
| 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.
Source: FCC Broadband Data Collection, based on 201 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable | 1,000 / 1,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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