Contra Costa County property record for 527 Isabel Dr, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,782 sqft · built 1986 |
| Lot Size | 0.189 acres (8,250 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $1,275,000 (Sep 2024) |
| Tax Bill | $15,166 (2025) |
| Deeds & Mortgages | Feb 2026 Mortgage Jul 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 155-450-023-9 |
| Primary APN | 155-450-023-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 1,782 sqft Living Area |
| 1st Floor Area | 1,782 sqft |
| Year Built | Built 1986 |
|---|---|
| Effective Year Built | Effective 2010 |
| Lot Area | 8,250 sqft (0.189 acres) |
| Garage Type | Attached |
| Garage Area | 495 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 527 ISABEL DR |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-6617 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R6 |
| Legal Description | T05127 L0072 B |
| Legal Subdivision | SUBDIVISION 5127 |
| Legal Tract | 05127 |
| Legal Lot Number | 72 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 321102 |
Source: Contra Costa County records · APN 155-450-023-9
Assessment roll updated July 14, 2026 · Last verified July 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 | 1593 ASHWOOD DR, MARTINEZ, CA 94553-5344 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Date | Document |
|---|---|
| Feb 06, 2026 | Deed of Trust, Mortgage · Conventional Mortgage TRAVIS CU |
| Jul 23, 2020 | Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Sep 03, 2024 · Amount on Record |
| Deed Sale | Sep 03, 2024 · Amount on Record |
| Prior Sale | Nov 19, 2013 · Amount on Record |
| Deed Document Number | 202485963 |
| Prior Transfer Date | Jun 28, 2016 |
| Prior Transfer Doc | 0000132284 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 527 ISABEL DR, MARTINEZ, CA 94553-6617 |
| Transaction Type | Mortgage |
| Record Updated | Feb 17, 2026 |
| Name | Verified Name |
|---|---|
| Address | 527 ISABEL DR, MARTINEZ, CA 94553-6617 |
| Document Number | 0000012096 |
|---|---|
| Date | Feb 06, 2026 |
| Instrument | 2026- 012096 |
| Name | TRAVIS CU |
|---|---|
| Type | Credit Union |
| Address | 1 TRAVIS WAY, VACAVILLE, CA 95687 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Feb 01, 2056 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 5.25% |
| Adjustable | Adjustable Rate Rider |
| Type Change Date | Feb 01, 2033 |
| Change Frequency | 6 Months |
| Min Rate At Change | 3.25% |
| Max Rate At Change | 7.25% |
| Index | Other |
| Max Rate | 10.2% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 527 ISABEL DR, MARTINEZ, CA 94553-6617 |
| Document Number | 0000155590 |
| Instrument Date | Jul 23, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Aug 07, 2020 |
| Title Company | AMROCK TITLE CA INC |
| Name | Verified Name |
|---|---|
| Relationship | Husband and Wife |
| Address | 527 ISABEL DR MARTINEZ CA 945536617, MARTINEZ, CA 94553-6617 |
| Document Number | 0000155590 |
|---|---|
| Date | Jul 29, 2020 |
| Instrument | 155590 |
| Name | QUICKEN LNS |
|---|---|
| Type | Funding / Finance Company |
| Address | DETROIT, MI 48226-1906 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jul 28, 2050 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| 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 | $1,300,500 (+2%) Land $856,800 Building $443,700 | |
| 2025 | $15,166.00 (+79.63%) Homeowner's exemption | $1,275,000 (+89.85%) Land $840,000 Building $435,000 |
| 2023 | $8,443.00 (+0.84%) | $671,599 Land $377,038 Building $294,561 |
| 2022 | $8,373.00 |
Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 9 (5% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 3 (1983–2018) |
| Claims Outside the SFHA | 2 of 3 |
| Most Recent Claim | Nov 2018 · rainfall accumulation |
| Wildfire Risk | Low lower than 96% of the US · lower than 97.4% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| 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.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Verizon.
Based on FCC filings for 368 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CONTRA COSTA WATER DISTRICT serves 210,500 people |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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