Los Angeles County property record for 10010 Mattock Ave, Downey, CA 90240
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 2,540 sqft · built 1957 |
| Lot Size | 0.236 acres (10,281 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $922,000 (May 2019) |
| Tax Bill | $12,871 (2025) |
| Deeds & Mortgages | May 2021 Transfer May 2019 Sale & Mortgage |
| Flood Zone | Zone X (reduced by levee) |
| APN | 6391-016-002 |
| Primary APN | 6391-016-002 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 2,540 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1963 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Flat |
| Roof Material | Gravel |
| Lot Area | 10,281 sqft (0.236 acres) |
| Lot Dimensions | 135 ft deep x 76 ft wide |
| Garage Type | Attached |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Water Source | Commercial |
| Street Address | 10010 MATTOCK AVE |
|---|---|
| City | DOWNEY |
| State | CA |
| Zip | 90240-3529 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | DOR110 |
| Legal Description | TRACT # 18006 LOT 41 |
| Legal Subdivision | 18006 |
| Legal Tract | 18006 |
| Legal Block | 2 |
| Legal Lot Number | 41 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | DOWNEY-NORWALK |
| Census Block Group | 2 |
| Census Block | 2008 |
| Census Tract | 550502 |
10010 Mattock Ave is owner-occupied and held in a trust since April 2021.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 10010 MATTOCK AVE, DOWNEY, CA 90240-3529 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| May 17, 2021 | Intrafamily Transfer, Transfer |
| May 30, 2019 | Grant Deed, Transfer · Conventional Mortgage NMSI INC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 30, 2019 · Amount on File |
| Deed Sale | May 30, 2019 · Amount on File |
| Prior Sale | Mar 11, 2008 · Amount on File |
| Deed Document Number | 2019495689 |
| Last Transfer Date | Apr 3, 2021 |
| Transfer Doc | 0000788561 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | May 17, 2021 |
| Property Address | 10010 MATTOCK AVE, DOWNEY, CA 90240-3529 |
| Document Number | 0000788561 |
| Map Reference | MB 445 PG 1&2 |
| Instrument Date | Apr 3, 2021 |
| Instrument | 21-0788561 |
| 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 Living Trust |
| Address | 10010 MATTOCK AVE, DOWNEY, CA 90240-3529 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | May 30, 2019 |
| Property Address | 10010 MATTOCK AVE, DOWNEY, CA 90240-3529 |
| Document Number | 0000495689 |
| Map Reference | MB 445 PG 1&2 |
| Instrument Date | May 21, 2019 |
| Instrument | 19-0495689 |
| Transaction Type | Transfer |
| Record Updated | Sep 22, 2021 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| 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 | Joint Tenants |
| Address | 10010 MATTOCK AVE, DOWNEY, CA 90240-3529 |
| Document Number | 0000495690 |
|---|---|
| Date | May 30, 2019 |
| Instrument | 19-0495690 |
| Name | NMSI INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jun 1, 2049 |
The 2025 property tax bill for 10010 Mattock Ave was $12,871 with a homeowner's exemption, up 1.6% from the year before.
Source: Los Angeles County assessment roll, as of August 25, 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Municipality | Downey City |
| Unified School District | Downey Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,048,618 (+2%) Land $632,402 Building $416,216 | |
| 2025 | $12,871.00 (+1.64%) Homeowner's exemption | $1,028,057 Land $620,002 Building $408,055 |
| 2024 | $12,663.00 (+3.57%) | |
| 2023 | $12,227.00 (+5.33%) Homeowner's exemption | $988,138 Land $595,928 Building $392,210 |
| 2022 | $11,608.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 10010 Mattock Ave in Zone X, where a levee reduces flood risk.
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 reduced by levee · depends on levee performance |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
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.
The area around 10010 Mattock Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 | DOWNEY - CITY, WATER DEPT. serves 110,556 people · EPA ID CA1910034 |
|---|---|
| Water Source | Groundwater |
| Lead | Under 1 ppb (2021–2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Coliform assessment Feb 2018 |
| 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 486 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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