Marin County property record for 100 Jefferson Dr, Tiburon, CA 94920
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,532 sqft · built 1951 |
| Lot Size | 0.169 acres (7,360 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $791,000 (Mar 2012) |
| Tax Bill | $13,161 (2025) |
| Deeds & Mortgages | Dec 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 034-252-15 |
| Primary APN | 034-252-15 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Building Area | 1,532 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1951 |
|---|---|
| Effective Year Built | Effective 1978 |
| Architectural Style | Contemporary |
| Lot Area | 7,360 sqft (0.169 acres) |
| Garage Area | 396 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 435 sqft |
| Patio Area | 435 sqft |
| Heating System | Central |
|---|
| Street Address | 100 JEFFERSON DR |
|---|---|
| City | BELVEDERE TIBURON |
| State | CA |
| Zip | 94920-2005 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | BELVEDERE GARDENS 04 |
| Legal Lot Number | 43 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 124100 |
100 Jefferson Dr is owned and occupied by two individuals who acquired it in November 2020.
Source: Marin County records, as of July 13, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 100 JEFFERSON DR, BELVEDERE TIBURON, CA 94920-2005 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 29, 2012 · Amount on File |
| Deed Sale | Mar 29, 2012 · Amount on File |
| Deed Document Number | 201219451 |
| Last Transfer Date | Nov 20, 2020 |
| Transfer Doc | 0000061383 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Dec 3, 2020 |
| Property Address | 100 JEFFERSON DR, TIBURON, CA 94920-2005 |
| Document Number | 0000061383 |
| Map Reference | MB 7 PG 23 |
| Instrument Date | Nov 20, 2020 |
| Instrument | 2020-0061383 |
| Transaction Type | Transfer |
| Record Updated | Aug 13, 2021 |
| Title Company | FIDELITY NATIONAL TITLE CO |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 100 JEFFERSON DR, TIBURON, CA 94920-2005 |
| Document Number | 0000061384 |
|---|---|
| Date | Dec 3, 2020 |
| Instrument | 2020-0061384 |
| Name | MASON MCDUFFIE MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 180 Months |
| Due | Dec 1, 2035 |
The 2025 property tax bill for 100 Jefferson Dr was $13,161 with a homeowner's exemption.
Source: Marin County assessment roll, as of July 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Municipality | Tiburon Town |
| Elementary School District | Reed Union Elementary School District (KG - 08) |
| Secondary School District | Tamalpais Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,013,090 (+2%) Land $608,522 Building $404,568 | |
| 2025 | $13,161.00 Homeowner's exemption | $993,234 Land $596,595 Building $396,639 |
| 2023 | $12,550.00 (+1.29%) Homeowner's exemption | $954,674 Land $573,434 Building $381,240 |
| 2022 | $12,390.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 100 Jefferson Dr in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective October 18, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 1 (1982) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jan 1982 · Severe Storms, Flood, Mudslides & High Tide |
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.
The area around 100 Jefferson Dr 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 | MARIN MUNICIPAL WATER DISTRICT serves 188,116 people · EPA ID CA2110002 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Aug 2023 |
| Lead | Under 1 ppb (2019–2021) 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 311 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 |
May also be available: Etheric Networks, Verizon.
5G and 4G LTE (outdoors only)
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