Marin County property record for 45 Mercury Ave, Tiburon, CA 94920
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,012 sqft · built 1950 |
| Lot Size | 0.165 acres (7,200 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $2,278 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 034-261-07 |
| Primary APN | 034-261-07 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,012 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Contemporary |
| Lot Area | 7,200 sqft (0.165 acres) |
| Garage Area | 396 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 95 sqft |
| Patio Area | 95 sqft |
| Street Address | 45 MERCURY AVE |
|---|---|
| City | BELVEDERE TIBURON |
| State | CA |
| Zip | 94920-1344 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | BELVERON GARDENS 02 |
| Legal Lot Number | 92 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 124100 |
45 Mercury Ave is owned by a company that acquired it in February 1997 and is owner-occupied.
Source: Marin County records, as of July 13, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 45 MERCURY AVE, BELVEDERE TIBURON, CA 94920-1344 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Life Tenant |
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 Transfer Date | Feb 19, 1997 |
| Transfer Doc | 0000009204 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 45 Mercury Ave was $2,278 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 | $117,066 (+2%) Land $48,861 Building $68,205 | |
| 2025 | $2,278.00 Homeowner's exemption | $114,770 Land $47,903 Building $66,867 |
| 2023 | $2,217.00 (+0.68%) Homeowner's exemption | $110,314 Land $46,043 Building $64,271 |
| 2022 | $2,202.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 45 Mercury Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1982.
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 |
|---|---|
| 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 45 Mercury Ave 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.
4G LTE (outdoors only), no 5G reported
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