Contra Costa County property record for 817 Sage Dr, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 3,104 sqft · built 1978 |
| Lot Size | 0.909 acres (39,585 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,450,000 (Sep 2021) |
| Tax Bill | $13,192 (2025) |
| Deeds & Mortgages | Apr 2026 Mortgage Nov 2023 Mortgage + 3 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 365-150-055-9 |
| Primary APN | 365-150-055-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 11 Rooms |
| Stories | 1 Story |
| Building Area | 3,104 sqft Living Area |
| Gross Area | 3,610 sqft |
| 1st Floor Area | 3,104 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1986 |
| Architectural Style | Contemporary |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 39,585 sqft (0.909 acres) |
| Garage Type | Attached |
| Garage Area | 506 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 817 SAGE DR |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-5956 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | PCL MAP 66 PG 11 PCL B |
| Legal Subdivision | MINOR SUB 77-7 |
| Legal Tract | 66PM11 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2002 |
| Census Tract | 347000 |
Source: Contra Costa County records, as of July 14, 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 | 817 SAGE DR, MARTINEZ, CA 94553-5956 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Apr 1, 2026 | Deed of Trust, Mortgage · Conventional Mortgage GUILD MORTGAGE COMPANY |
| Nov 17, 2023 | Deed of Trust, Mortgage · Conventional Mortgage GUILD MORTGAGE CO |
| Sep 14, 2021 | Grant Deed, Transfer · Conventional Mortgage GUILD MORTGAGE CO |
| Sep 24, 2019 | Quit Claim Deed, Transfer ATTORNEY ONLY |
| Aug 15, 2019 | Intrafamily Transfer, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 14, 2021 · Amount on Record |
| Deed Sale | Sep 14, 2021 · Amount on Record |
| Deed Document Number | 2021255676 |
| Prior Transfer Date | May 21, 2021 |
| Prior Transfer Doc | 0000156628 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Apr 1, 2026 |
| Property Address | 817 SAGE DR, MARTINEZ, CA 94553-5956 |
| Document Number | 0000032661 |
| Instrument Date | Mar 25, 2026 |
| Instrument | 202632661 |
| Transaction Type | Mortgage |
| Record Updated | Jul 13, 2026 |
| Title Company | ATLAS TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants, 205 |
| Address | 817 SAGE DR, MARTINEZ, CA 94553-5956 |
| Investor | Possibly a Property Investor |
| Document Number | 0000032661, |
|---|---|
| Date | Apr 1, 2026 |
| Instrument | 202632661 |
| Name | GUILD MORTGAGE COMPANY |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Apr 1, 2056 |
| Rate Type | Fixed Rate |
|---|---|
| Rate | 5.98% |
| Initial Type | Fixed Rate |
| Max Rate | -1% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 817 SAGE DR, MARTINEZ, CA 94553-5956 |
| Transaction Type | Mortgage |
| Record Updated | Dec 5, 2023 |
| Title Company | OLD REPUBLIC TITLE COMPANY CONCORD, OLD REPUBLIC TTL CO CONCORD |
| Name | Verified Name |
|---|---|
| Address | 817 SAGE DR, MARTINEZ, CA 94553-5956 |
| Investor | Possibly a Property Investor |
| Document Number | 0000123751 |
|---|---|
| Date | Nov 17, 2023 |
| Instrument | 2023-123751 |
| Name | GUILD MORTGAGE CO |
|---|---|
| Type | Mortgage Company |
| Address | SAN DIEGO, CA 92111 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Dec 1, 2053 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 14, 2021 |
| Property Address | 817 SAGE DR, MARTINEZ, CA 94553-5956 |
| Document Number | 0000255676 |
| Map Reference | MB 64 PG 11 |
| Instrument Date | Sep 10, 2021 |
| Instrument | 2021-255676 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 817 SAGE DR, MARTINEZ, CA 94553-5956 |
| Investor | Possibly a Property Investor |
| Document Number | 0000255677 |
|---|---|
| Date | Sep 14, 2021 |
| Instrument | 2021-255677 |
| Name | GUILD MORTGAGE CO |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Oct 1, 2051 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 24, 2019 |
| Property Address | 817 SAGE DR, MARTINEZ, CA 94553-5956 |
| Document Number | 0000158226 |
| Instrument Date | Sep 6, 2019 |
| Instrument | 158226 |
| Transaction Type | Transfer |
| Record Updated | Oct 15, 2019 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 817 SAGE DR MARTINEZ CA 945535956, MARTINEZ, CA 94553-5956 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 15, 2019 |
| Property Address | 817 SAGE DR, MARTINEZ, CA 94553-5956 |
| Document Number | 0000130621 |
| Map Reference | MB 64 PG 11 |
| Instrument Date | Jun 24, 2019 |
| Instrument | 2019-130621 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | SOLIDIFI TITLE COMPANY OF CA |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 817 SAGE DR, MARTINEZ, CA 94553-5956 |
| Document Number | 0000130622 |
|---|---|
| Date | Aug 15, 2019 |
| Instrument | 2019-130622 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 359 Months |
| Due | Jul 1, 2049 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Martinez Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,068,028 (+2%) Land $457,206 Building $610,822 | |
| 2025 | $13,192.00 (+17.45%) Homeowner's exemption | $1,047,088 (+15.64%) Land $448,242 Building $598,846 |
| 2023 | $11,232.00 (+1.7%) Homeowner's exemption | $905,507 Land $430,837 Building $474,670 |
| 2022 | $11,044.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective October 12, 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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (1986) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1986 · Severe Storms & Flooding |
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 73% of the US · above 48% of California |
|---|---|
| Wildfire Likelihood | 0.4% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | CITY OF MARTINEZ serves 31,015 people · EPA ID CA0710006 |
|---|---|
| Water Source | Purchased surface water from CONTRA COSTA WATER DISTRICT |
| Last State Inspection | Oct 2025 |
| Lead | Under 1 ppb (2023–2025) 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 33 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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