Los Angeles County property record for 20 Hidden Valley Rd, Monrovia, CA 91016
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 2,638 sqft · built 1976 |
| Lot Size | 0.712 acres (30,993 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $915,000 (Sep 2014) |
| Tax Bill | $14,845 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 8520-003-020 |
| Primary APN | 8520-003-020 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 2,638 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1976 |
|---|---|
| Effective Year Built | Effective 1976 |
| Architectural Style | Spanish |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Tile |
| Lot Area | 30,993 sqft (0.712 acres) |
| Lot Dimensions | 268 ft deep x 112 ft wide |
| Garage Type | Attached |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Water Source | Commercial |
| Street Address | 20 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 | *LAND DESC IN DOC 1032895,140930*POR 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 | 3018 |
| Census Tract | 430301 |
Source: Los Angeles County records, as of August 25, 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 Record |
|---|---|
| Mailing Address | 20 HIDDEN VALLEY RD, MONROVIA, CA 91016-1601 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 30, 2014 · Amount on Record |
| Deed Sale | Sep 30, 2014 · Amount on Record |
| Prior Sale | Apr 14, 2011 · Amount on Record |
| Deed Document Number | 20141032895 |
| Prior Transfer Date | Apr 7, 2011 |
| Prior Transfer Doc | 0000542140 |
| Record Updated | Oct 29, 2026 |
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 | $1,121,676 (+2%) Land $919,408 Building $202,268 | |
| 2025 | $14,845.00 (+4.87%) | $1,099,683 (+4.04%) Land $901,381 Building $198,302 |
| 2023 | $14,156.00 (+3.03%) | $1,056,982 Land $866,380 Building $190,602 |
| 2022 | $13,740.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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.
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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