Napa County property record for 1448 Oak Ave, Saint Helena, CA 94574
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3.5 ba · 1,460 sqft · built 1911 |
| Lot Size | 0.22 acres (9,583 sqft) |
| Owner | Trust Name on File |
| Last Sale | $1,950,000 (Jun 2023) |
| Tax Bill | $21,912 (2026) |
| Deeds & Mortgages | Apr 2026 Mortgage Jun 2023 Sale & Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 009-223-015-000 |
| Primary APN | 009-223-015-000 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Building Area | 1,460 sqft Living Area |
| Gross Area | 1,839 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1911 |
|---|---|
| Effective Year Built | Effective 1920 |
| Construction Type | Wood |
| Lot Area | 9,583 sqft (0.22 acres) |
| Garage Type | Attached |
| Garage Area | 379 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | None |
|---|---|
| Heating System | HVAC |
| Old Parcel Number | 009-223-015 |
|---|---|
| Street Address | 1448 OAK AVE |
| City | SAINT HELENA |
| State | CA |
| Zip | 94574-1852 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Jurisdiction | NAPA CA |
| Township / Civil Division | ST. HELENA |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 201602 |
1448 Oak Ave is owner-occupied and held in a trust since June 2023.
Source: Napa County records, as of October 21, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | PO BOX 594, DANVILLE, CA 94526-0594 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | 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 |
|---|---|
| Apr 15, 2026 | Deed of Trust, Mortgage · Conventional Mortgage MASON MCDUFFIE MORTGAGE CORPORATION |
| Jun 2, 2023 | Grant Deed, Transfer · Conventional Mortgage MASON MCDUFFIE MORTGAGE CORP |
| Dec 21, 2020 | Intrafamily Transfer, Transfer · Conventional Mortgage MORTGAGE 2000 INC |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 2, 2023 · Amount on File |
| Deed Sale | Jun 2, 2023 · Amount on File |
| Prior Sale | Oct 5, 2012 · Amount on File |
| Deed Document Number | 20238322 |
| Prior Transfer Date | Dec 15, 2020 |
| Prior Transfer Doc | 0000034537 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | NAPA CA |
| Recording Date | Apr 15, 2026 |
| Property Address | 1448 OAK AVE, SAINT HELENA, CA 94574-1852 |
| Document Number | 0000005345 |
| Instrument Date | Apr 10, 2026 |
| Instrument | 20265345 |
| Transaction Type | Mortgage |
| Record Updated | Jul 12, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Name | Verified Name |
|---|---|
| Relationship | Trust, 212 |
| Address | 1448 OAK AVE, SAINT HELENA, CA 94574-1852 |
| Document Number | 0000005345, |
|---|---|
| Date | Apr 15, 2026 |
| Instrument | 20265345 |
| Name | MASON MCDUFFIE MORTGAGE CORPORATION |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | May 1, 2056 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 5.5% |
| Initial Type | Adjustable Rate |
| Adjustable | Adjustable Rate Rider |
| Max Rate | -1% |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | NAPA CA |
| Recording Date | Jun 2, 2023 |
| Property Address | 1448 OAK AVE, SAINT HELENA, CA 94574-1852 |
| Document Number | 0000008322 |
| Instrument Date | May 4, 2023 |
| Instrument | 2023-0008322 |
| Transaction Type | Transfer |
| Record Updated | Jun 12, 2023 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN 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 |
|---|---|
| Address | PO BOX 594, DANVILLE, CA 94526-0594 |
| Document Number | 0000008323 |
|---|---|
| Date | Jun 2, 2023 |
| Instrument | 2023-0008323 |
| Name | MASON MCDUFFIE MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jul 1, 2053 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6.62% |
| Type Change Date | Jul 1, 2030 |
| Change Frequency | 6 Months |
| Min Rate At Change | 2.75% |
| Max Rate At Change | 11.6% |
| Index | Other |
| Max Rate | 11.6% |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | NAPA CA |
| Recording Date | Dec 21, 2020 |
| Property Address | 1448 OAK AVE, SAINT HELENA, CA 94574-1852 |
| Document Number | 0000034537 |
| Instrument Date | Dec 15, 2020 |
| Instrument | 2020-0034537 |
| Transaction Type | Transfer |
| Record Updated | Aug 12, 2021 |
| Title Company | TICOR TTL ORANGE CNTY BRANCH |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 2536 VIA LA SELVA, PALOS VERDES ESTATES, CA 90274-1020 |
| Document Number | 0000034538 |
|---|---|
| Date | Dec 21, 2020 |
| Instrument | 2020-0034538 |
| Name | MORTGAGE 2000 INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jan 1, 2051 |
The 2026 property tax bill for 1448 Oak Ave was $21,912 with a homeowner's exemption, up 1.7% from the year before.
Source: Napa County assessment roll, as of October 21, 2026
| Type | Name |
|---|---|
| State | California |
| County | Napa County |
| Municipality | St. Helena City |
| Unified School District | St. Helena Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $21,912.00 (+1.74%) Homeowner's exemption | $2,069,355 (+2%) Land $1,114,268 Building $955,087 | $2,069,355 (+2%) Land $1,114,268 Building $955,087 |
| 2025 | $21,537.00 Homeowner's exemption | $2,028,780 Land $1,092,420 Building $936,360 | $2,028,780 Land $1,092,420 Building $936,360 |
| 2023 | $15,577.00 (+3.98%) | $1,449,912 Land $887,702 Building $562,210 | |
| 2022 | $14,981.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 1448 Oak Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective June 25, 2024 · 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 |
| Nearby Flood Policies | 1 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.
Wildfire risk around 1448 Oak Ave is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond 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 | CITY OF ST. HELENA serves 5,386 people · EPA ID CA2810004 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Feb 2025 |
| Lead | Under 1 ppb (2024–2026) action level 15 ppb |
| Water Quality | Haloacetic acids not recorded as resolved · Jul 2023 Treatment failure resolved · Nov 2020 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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 488 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
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