20 Longfellow Rd is a 2,646 square foot house on a 8,050 square foot lot with 4 bedrooms and 3 bathrooms. - it last sold on December 09, 1999 for $560,000. Based on Redfin's Mill Valley data, we estimate the home's value is $2,644,494.
Single-familyProperty Type
1958Year Built
8,050 sq ftLot Size
$999Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$2,644,494
$2.1M since sold in December 1999$16K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 4.3% lower than the average sale price ($2.76M) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
May 21, 2024 • Final
Residential electrical panel
Install a new main electrical service for a residential building.
Electrical
Jul 18, 2023 • Final
Residential comp shingle re roof
Perform a residential re-roofing by installing a single overlay of composition shingles.
Roofing
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Heating & Cooling
Heating Fuel Type: Gas
Heating Type: Central
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Exterior
Exterior Information
Foundation Type: Raised W/Crawlspace
Building Style Type: Contemporary
Building Construction Quality: Good
Exterior Wall: Wood Siding
Property Information
Subdivision Name: ENCHANTED KNOLLS #1
Living Sq. Ft: 2,646
Building Sq. Ft: 2,646
# of Units: 1
# of Stories: 2
Legal Description: OFFICIAL RECS 8 PG 27 LOT 79
Parking & Garage Information
# of Parking Spaces: 2
Garage/Parking Sq. Ft: 400
Lot Information
# of Buildings: 1
Land Sq. Ft: 8,050
Legal Lot Number: 79
Municipality Name: MILL VALLEY
Acres: 0.1848
Zoning Code: R1
County Use Description: 1 FAMILY RESID
Location Information
Parcel Location Influence: Woodland
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Tax Area: MILL VALLEY
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,646
Stories: 2.0
Lot Size: 8,050 square feet
Style: Single Family Residential
Year Built: 1958
Year Renovated: 1967
County: Marin County
APN: 030-182-18
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Edna Maguire Elementary School
Public K-5 • Assigned • 0.4mi
10/10
Mill Valley Middle School
Public 6-8 • Assigned • 0.5mi
9/10
Tamalpais High School
Public 9-12 • Assigned • 0.9mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
3/10 Heat Factor
8 days above 83° expected this year, 18 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
13 unhealthy days expected this year, 13 days in 30 years
Provided by First Street
Historical weather
Mill Valley, CA • 94941
Average low and high temperatures (°F)
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Sun exposure
In this area, properties receive around 10.6 hours in
June and 5 hours in December, placing it above the
U.S. average for solar exposure.
10.6 hrs
5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$2.51M – $3.04M
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