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255 Hillside Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 255 Hillside Ave, Mill Valley, CA 94941 · Last verified July 2026

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 3,504 sqft · built 1912
Lot Size0.481 acres (20,959 sqft)
OwnerCompany Name on File
Last Sale$5,200,000 (Sep 2025)
Tax Bill$54,979 (2025)
Deeds & MortgagesSep 2025 Sale & Mortgage
Flood ZoneZone X (minimal risk)
APN029-103-60

Property Details

APN / Parcel Number

Primary APN029-103-60

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms10 Rooms
Stories2 Stories
Building Area3,504 sqft Living Area
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1912
Effective Year BuiltEffective 1965
Architectural StyleContemporary
Lot Area20,959 sqft (0.481 acres)
Garage Area516 sqft
Parking Spaces2 Parking Spaces
Deck Area931 sqft
Patio Area931 sqft

Utilities, Heating & Cooling

Heating SystemCentral

Location & Zoning

Street Address255 HILLSIDE AVE
CityMILL VALLEY
StateCA
Zip94941-1182
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal SubdivisionSUNNY HEIGHTS ADDITION
JurisdictionMARIN CA
Township / Civil DivisionSOUTHEAST MARIN
Census Block Group5
Census Block5019
Census Tract126100

Owner

Source: Marin County records · APN 029-103-60

Assessment roll updated July 13, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordCompany Name on File
Mailing Address235 HILLSIDE AVE, MILL VALLEY, CA 94941-1182
Owner TypeCompany
VestingLimited Liability Partnership

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesVerified Name on Deed
Last SaleSep 26, 2025 · Amount on Record
Deed SaleSep 26, 2025 · Amount on Record
Prior SaleNov 01, 2007 · Amount on Record
Deed Document Number202524887
Prior Transfer DateMar 08, 2006
Prior Transfer Doc0000018415
Record UpdatedSep 20, 2026

September 2025: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionMARIN CA
Recording DateSep 26, 2025
Property Address255 HILLSIDE AVE, MILL VALLEY, CA 94941-1182
Document Number0000024887
Map ReferenceMB 1 PG 75
Instrument DateSep 19, 2025
Instrument2025-0024887
Transaction TypeTransfer
Record UpdatedOct 08, 2025
Title CompanyOLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$5,720.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address235 HILLSIDE AVE, MILL VALLEY, CA 94941-1182

Mortgage

Document Number0000024888
DateSep 26, 2025
Instrument2025-0024888
Lender
NameMORGAN STANLEY PRIVATE BANK NA
TypeBank
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueOct 01, 2055
Interest
Rate TypeAdjustable Rate
Rate5.5%
Type Change DateOct 01, 2032
Change Frequency6 Months
Min Rate At Change3%
Max Rate At Change10.5%
IndexSOFR Average 30-Day
Margin3
Max Rate10.5%

Tax Assessment & Valuation

Source: Marin County records · Assessment roll updated July 13, 2026 · Last verified July 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyMarin County
MunicipalityMill Valley City
Elementary School DistrictMill Valley Elementary School District (KG - 08)
Secondary School DistrictTamalpais Union High School District (09 - 12)

Tax Bill & Assessment History

Assessed value is set for property tax purposes and is not a market price estimate.

YearTax BillAssessed Value
2026$5,200,000 (+14.76%) Land $3,400,000 Building $1,800,000
2025$54,979.00 (+5.05%)$4,531,333 (+4.04%) Land $3,217,903 Building $1,313,430
2023$52,337.00 (+3.94%)$4,355,418 Land $3,092,978 Building $1,262,440
2022$50,355.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Marin County (06041C), updated October 18, 2023 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060411261005, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Special Flood Hazard AreaNo
Flood HazardMinimal
500-Year FloodplainNo
Nearby Flood Policies1 in force
Nearby Flood Claims3 (1986–2010)
Claims Outside the SFHA2 of 3
Most Recent ClaimJan 2010, rainfall accumulation

Wildfire

Wildfire RiskLow
above 32% of the US · above 19% of California
Wildfire LikelihoodAbout 1 in 3,704 per year
ExposureDirect
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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 301 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
AT&TFiber5,000 / 5,000
XfinityCable2,000 / 250
UnwiredFixed Wireless300 / 25

May also be available at this address: Verizon, T-Mobile USA. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G (outdoors only) and 4G LTE

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