Los Angeles County property record for 10403 Mattock Ave, Downey, CA 90241
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 1,652 sqft · built 1953 |
| Lot Size | 0.173 acres (7,553 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $470,000 (Feb 2004) |
| Tax Bill | $8,450 (2025) |
| Deeds & Mortgages | Apr 2021 Mortgage Jun 2017 Mortgage |
| Flood Zone | Zone X (reduced by levee) |
| APN | 6287-002-006 |
| Primary APN | 6287-002-006 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 1,652 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1953 |
|---|---|
| Effective Year Built | Effective 1956 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Hip |
| Roof Material | Gravel |
| Lot Area | 7,553 sqft (0.173 acres) |
| Lot Dimensions | 115 ft deep x 66 ft wide |
| Garage Type | Attached |
| Heating System | Central |
|---|
| Street Address | 10403 MATTOCK AVE |
|---|---|
| City | DOWNEY |
| State | CA |
| Zip | 90241-3006 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | DOR17500* |
| Legal Description | TRACT # 17563 LOT 106 |
| Legal Subdivision | 17563 |
| Legal Tract | 17563 |
| Legal Block | 2 |
| Legal Lot Number | 106 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | DOWNEY-NORWALK |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 551001 |
10403 Mattock Ave is owned and occupied by two individuals who acquired it in April 2021.
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 File |
|---|---|
| Mailing Address | 2103 SAPOTA DR, LA HABRA HEIGHTS, CA 90631-7962 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Apr 30, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage NEW AIM FUNDING INC |
| Jun 1, 2017 | Intrafamily Transfer, Transfer · Conventional Mortgage UNITED FIDELITY FUNDING CORP |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Feb 6, 2004 · Amount on File |
| Deed Sale | Feb 6, 2004 · Amount on File |
| Prior Sale | Jul 2, 1999 · Amount on File |
| Deed Document Number | 2004274501 |
| Last Transfer Date | Apr 27, 2021 |
| Transfer Doc | 0000696189 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Apr 30, 2021 |
| Property Address | 10403 MATTOCK AVE, DOWNEY, CA 90241-3006 |
| Document Number | 0000696189 |
| Map Reference | MB 438 PG 15&16 |
| Instrument Date | Apr 27, 2021 |
| Instrument | 21-0696189 |
| Transaction Type | Transfer |
| Record Updated | May 30, 2023 |
| Title Company | MONARCH TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 2103 SAPOTA DR, LA HABRA HEIGHTS, CA 90631-7962 |
| Document Number | 0000696190 |
|---|---|
| Date | Apr 30, 2021 |
| Instrument | 21-0696190 |
| Name | NEW AIM FUNDING INC |
|---|---|
| Type | Non-Lending Institution |
| Address | DOWNEY, CA 90240 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | May 1, 2051 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Jun 1, 2017 |
| Property Address | 10403 MATTOCK AVE, DOWNEY, CA 90241-3006 |
| Document Number | 0000607301 |
| Map Reference | MB438 PG15&16 |
| Instrument Date | Apr 19, 2017 |
| Instrument | 17-0607301 |
| Transaction Type | Transfer |
| Record Updated | Sep 22, 2021 |
| Title Company | PROVIDENT TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 10403 MATTOCK AVE, DOWNEY, CA 90241-3006 |
| Document Number | 0000607302 |
|---|---|
| Date | Jun 1, 2017 |
| Instrument | 17-0607302 |
| Name | UNITED FIDELITY FUNDING CORP |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Jun 1, 2047 |
The 2025 property tax bill for 10403 Mattock Ave was $8,450 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 | $681,587 (+2%) Land $493,652 Building $187,935 | |
| 2025 | $8,450.00 (+1.55%) Homeowner's exemption | $668,223 Land $483,973 Building $184,250 |
| 2024 | $8,321.00 (+3.53%) | |
| 2023 | $8,037.00 (+5.31%) Homeowner's exemption | $642,278 Land $465,181 Building $177,097 |
| 2022 | $7,632.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 10403 Mattock Ave in Zone X, where a levee reduces flood risk.
Source: FEMA National Flood Hazard Layer, effective September 30, 2026
| FEMA Flood Zone | Zone X reduced by levee · depends on levee performance |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 10403 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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