Los Angeles County property record for 21 Hidden Valley Rd, Monrovia, CA 91016
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4 ba · 3,014 sqft · built 1999 |
| Lot Size | 0.42 acres (18,296 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $590,000 (Feb 2000) |
| Tax Bill | $12,247 (2025) |
| Deeds & Mortgages | Feb 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 8520-003-012 |
| Primary APN | 8520-003-012 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Building Area | 3,014 sqft Living Area |
| Year Built | Built 1999 |
|---|---|
| Effective Year Built | Effective 1999 |
| Construction Type | Wood |
| Lot Area | 18,296 sqft (0.42 acres) |
| Lot Dimensions | 275 ft deep x 74 ft wide |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 21 HIDDEN VALLEY RD |
|---|---|
| City | MONROVIA |
| State | CA |
| Zip | 91016-1601 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | MORF* |
| Legal Description | 0.44 MORE OR LESS AC BEING EX OF ST LOT COM S 0 1748 W 64 FT AND S 40 4748 W 100 FT AND S 50 2748 W 100 FT AND S 54 3748 W 80 FT AND S 66 5748 W 53.2 1 FT FROM N 1/4 COR OF SEC 23 T 1N R PART OF NW 1/4 OF SEC 23 T 1N R 11W |
| Legal Range | 11W |
| Legal Township | 01N |
| Legal Section | 23 |
| Legal Block | 3 |
| Legal Lot Number | 23 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | UPPER SAN GABRIEL VALLEY |
| Census Block Group | 3 |
| Census Block | 3008 |
| Census Tract | 430301 |
21 Hidden Valley Rd is owned and occupied by two individuals who bought it in February 2000.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 21 HIDDEN VALLEY RD, MONROVIA, CA 91016-1601 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | Feb 29, 2000 · Amount on File |
| Deed Sale | Feb 29, 2000 · Amount on File |
| Prior Sale | Aug 4, 1997 · Amount on File |
| Deed Document Number | 2000304079 |
| Prior Transfer Date | Aug 10, 1998 |
| Prior Transfer Doc | 0001414419 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Property Address | 21 HIDDEN VALLEY RD, MONROVIA, CA 91016-1601 |
| Document Number | 0000227422 |
| Instrument Date | Feb 11, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Aug 16, 2018 |
| Title Company | TITLE SERVICE AND LIAISON COMPANIES, INDECOMM GLOBAL SVCS |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 21 HIDDEN VALLEY RD MONROVIA CA 910161601, MONROVIA, CA 91016-1601 |
| Document Number | 0000227422 |
|---|---|
| Date | Feb 27, 2017 |
| Instrument | 227422 |
| Name | FIRSTBANK |
|---|---|
| Type | Bank |
| Address | FRANKLIN, TN 37067 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 180 Months |
| Due | Feb 26, 2032 |
The 2025 property tax bill for 21 Hidden Valley Rd was $12,247 with a homeowner's exemption.
Source: Los Angeles County assessment roll, as of August 25, 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Municipality | Monrovia City |
| Unified School District | Monrovia Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $924,934 (+2%) Land $434,874 Building $490,060 | |
| 2025 | $12,247.00 Homeowner's exemption | $906,799 Land $426,348 Building $480,451 |
| 2023 | $11,666.00 (+3.03%) Homeowner's exemption | $871,590 Land $409,794 Building $461,796 |
| 2022 | $11,323.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 21 Hidden Valley Rd in Zone X, an area of minimal flood risk, though there have been 3 flood claims nearby since 1982.
Source: FEMA National Flood Hazard Layer, effective September 30, 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 | 3 in force |
| Nearby Flood Claims | 3 (1982–2016) |
| Most Recent Claim | Jan 2016 · 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.
Wildfire risk around 21 Hidden Valley Rd is high, ranking above 79% of the US, with a 0.5% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 79% of the US · above 57% of California |
|---|---|
| Wildfire Likelihood | 0.5% 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 | MONROVIA-CITY, WATER DEPT. serves 37,931 people · EPA ID CA1910090 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Sep 2024 |
| 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 94 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 5,000 / 5,000 |
| Spectrum Cable | 1,000 / 50 |
| Giggle Fiber Cable | 1,000 / 40 |
| Verizon Fixed Wireless | 300 / 20 |
5G (outdoors only) and 4G LTE
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