Marin County property record for 18 Thalia St, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,154 sqft · built 1924 |
| Lot Size | 0.139 acres (6,050 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $3,800,000 (Mar 2026) |
| Tax Bill | $33,597 (2025) |
| Deeds & Mortgages | Mar 2026 Sale & Mortgage Nov 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 029-192-05 |
| Primary APN | 029-192-05 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 5 Rooms |
| Building Area | 2,154 sqft Living Area |
| Basement Area | 438 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1924 |
|---|---|
| Effective Year Built | Effective 1979 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Roof Material | Composition Shingle |
| Lot Area | 6,050 sqft (0.139 acres) |
| Garage Area | 668 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 432 sqft |
| Patio Area | 432 sqft |
| Heating System | Central |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 18 THALIA ST |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-2021 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RS6 |
| Legal Description | MAP E3 606 |
| Legal Subdivision | BOYLE PARK SUB #1 |
| Legal Block | C |
| Legal Lot Number | 3 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 4 |
| Census Block | 4009 |
| Census Tract | 126100 |
Source: Marin County records · APN 029-192-05
Assessment roll updated July 13, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 18 THALIA ST, MILL VALLEY, CA 94941-2021 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Date | Document |
|---|---|
| Mar 13, 2026 | Grant Deed, Transfer · Conventional Mortgage CITIBANK NA |
| Nov 20, 2020 | Deed of Trust, Mortgage · Conventional Mortgage LOANDEPOT.COM LLC |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Mar 13, 2026 · Amount on Record |
| Deed Sale | Mar 13, 2026 · Amount on Record |
| Prior Sale | May 20, 2015 · Amount on Record |
| Deed Document Number | 20265757 |
| Prior Transfer Date | Mar 31, 2008 |
| Prior Transfer Doc | 0000016734 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Mar 13, 2026 |
| Property Address | 18 THALIA ST, MILL VALLEY, CA 94941-2021 |
| Document Number | 0000005757 |
| Map Reference | MB 3 PG 6 |
| Instrument Date | Feb 27, 2026 |
| Instrument | 2026-0005757 |
| Transaction Type | Transfer |
| Record Updated | Mar 25, 2026 |
| Title Company | TWFG NATIONAL TITLE INSURANCE COMPANY, WFG NATIONAL TITLE INS CO |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $4,180.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 18 THALIA ST, MILL VALLEY, CA 94941-2021 |
| Document Number | 0000005758 |
|---|---|
| Date | Mar 13, 2026 |
| Instrument | 2026-0005758 |
| Name | CITIBANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Apr 01, 2056 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 5.25% |
| Type Change Date | Apr 01, 2033 |
| Change Frequency | 6 Months |
| Min Rate At Change | 2.75% |
| Max Rate At Change | 10.2% |
| Index | SOFR Average 30-Day |
| Max Rate | 10.2% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MARIN CA |
| Property Address | 18 THALIA ST, MILL VALLEY, CA 94941-2021 |
| Transaction Type | Mortgage |
| Record Updated | Feb 05, 2021 |
| Name | Verified Name |
|---|---|
| Address | 18 THALIA ST, MILL VALLEY, CA 94941-2021 |
| Document Number | 0000058850 |
|---|---|
| Date | Nov 20, 2020 |
| Instrument | 2020-0058850 |
| Name | LOANDEPOT.COM LLC |
|---|---|
| Type | Mortgage Company |
| Address | FOOTHILL RANCH, CA 92610 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Dec 01, 2050 |
Source: Marin County records · Assessment roll updated July 13, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Municipality | Mill Valley City |
| Elementary School District | Mill Valley Elementary School District (KG - 08) |
| Secondary School District | Tamalpais Union High School District (09 - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $2,693,032 (+2%) Land $1,202,606 Building $1,490,426 | |
| 2025 | $33,597.00 (+14.1%) Homeowner's exemption | $2,640,240 (+16.44%) Land $1,179,032 Building $1,461,208 |
| 2023 | $29,444.00 (+3.41%) Homeowner's exemption | $2,267,438 Land $1,133,256 Building $1,134,182 |
| 2022 | $28,474.00 |
Source: FEMA National Flood Hazard Layer as of October 18, 2023 · 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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 6 in force |
| Nearby Flood Claims | 5 (1982–2009) |
| Claims Outside the SFHA | 4 of 5 |
| Most Recent Claim | Oct 2009 · other causes |
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
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) |
|---|---|
| AT&T Fiber · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
Based on FCC filings for 762 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 | MARIN MUNICIPAL WATER DISTRICT serves 188,116 people |
|---|---|
| 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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures