Contra Costa County property record for 4820 Blum Rd, Martinez, CA 94553 · Last verified August 2026
| Property Type | Duplex |
|---|---|
| Details | 5 bd · 3 ba · 1,686 sqft · built 1949 |
| Lot Size | 0.22 acres (9,583 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $295,000 (Jul 2003) |
| Tax Bill | $6,809 (2025) |
| Deeds & Mortgages | Feb 2022 Sale Feb 2022 Sale + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 159-200-018-4 |
| Primary APN | 159-200-018-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 1,686 sqft Living Area |
| 1st Floor Area | 1,686 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1949 |
|---|---|
| Effective Year Built | Effective 1952 |
| Architectural Style | Bungalow |
| Exterior Material | Stucco |
| Roof Material | Composition Shingle |
| Lot Area | 9,583 sqft (0.22 acres) |
| Porch | Porch |
| Heating System | Floor/Wall Furnace |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 4820 BLUM RD |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3616 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Description | POR RO LAS JUNTAS |
| Legal Subdivision | LAS JUNTAS RHO |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1019 |
| Census Tract | 320004 |
Source: Contra Costa County records · APN 159-200-018-4
Assessment roll updated July 14, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 3013 RANCHO BERNADO DR, PITTSBURG, CA 94565-7681 |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Date | Document |
|---|---|
| Feb 15, 2022 | Deed, Transfer |
| Feb 15, 2022 | Deed, Transfer |
| May 04, 2018 | Quit Claim Deed, Transfer · Conventional Mortgage PEOPLES HM EQUITY |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jul 11, 2003 · Amount on Record |
| Deed Sale | Jul 11, 2003 · Amount on Record |
| Deed Document Number | 2003330805 |
| Last Transfer Date | Sep 17, 2024 |
| Transfer Doc | 0000092498 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Feb 15, 2022 |
| Property Address | 4820 BLUM RD, MARTINEZ, CA 94553-3616 |
| Document Number | 0000028656 |
| Map Reference | MB 36 |
| Instrument Date | Feb 02, 2022 |
| Instrument | 2022-028656 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 2232 BLACKFIELD DR, CONCORD, CA 94520-3509 |
| Document Type | Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Feb 15, 2022 |
| Property Address | 4820 BLUM RD, MARTINEZ, CA 94553-3616 |
| Document Number | 0000028655 |
| Map Reference | MB 36 |
| Instrument Date | Feb 02, 2022 |
| Instrument | 2022-028655 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 2232 BLACKFIELD DR, CONCORD, CA 94520-3509 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 04, 2018 |
| Property Address | 4820 BLUM RD, MARTINEZ, CA 94553-3616 |
| Document Number | 0000070006 |
| Instrument Date | Apr 30, 2018 |
| Instrument | 70006 |
| Transaction Type | Transfer |
| Record Updated | Nov 20, 2018 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Separate Estate/Property |
| Address | 4373 HEARTWOOD CT CONCORD CA 945211942, CONCORD, CA 94521-1942 |
| Document Number | 70007 |
|---|---|
| Date | May 04, 2018 |
| Instrument | 70007 |
| Name | PEOPLES HM EQUITY |
|---|---|
| Type | Funding / Finance Company |
| Address | BRENTWOOD, TN 37027 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | May 03, 2048 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $427,794 (+2%) Land $290,034 Building $137,760 | |
| 2025 | $6,809.00 (+6.09%) | $419,407 (+4.04%) Land $284,348 Building $135,059 |
| 2023 | $6,418.00 (+2.98%) | $403,122 Land $273,307 Building $129,815 |
| 2022 | $6,232.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133200041, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Flood Insurance Cost | Premium on Record median of 4 individual NFIP policies nearby |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 4 in force 4 of 4 on primary residences |
| Nearby Flood Claims | 1 (2017) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jan 2017, rainfall accumulation, Severe Winter Storms, Flooding, And Mudslides |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
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.
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