Off Market Oct 2025 for $2.5M
$2,804,521
Est. refi paymentEst. refi $15,529/mo
3
bd
1.5 ba
1,735
sq ft

20 Shell Rd, Mill Valley, CA 94941

map-entry

About this home

Single-familyProperty Type
1937Year Built
0.44 acresLot Size
$1,616Est. Price/Sq.Ft.
2 garage spacesParking
Listed by Lou La Gatta DRE #01124649 Marin Realty Group
415-608-4842 (agent)
Bought with Stephanie Lamarre DRE #01840604 Golden Gate Sotheby's International Realty
Redfin checked: 3 minutes ago
Source:BAREIS #325074288

Redfin Estimate

$2,804,521
$300K since sold in October 2025$28K since July

This home's estimate is 53.4% higher than the average sale price ($1.83M) of 3 comparable homes.

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Earn from this home

Sell
$682,284
Est. take-home

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Refinance
$0
Est. cash available

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Rent
$4,917/mo
Redfin rental estimate

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Market trends in 94941, CA

Sale history for 20 Shell Rd

Tax history for 20 Shell Rd

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Beds
3
Baths
1
Stories
Lot width
Lot depth
Lot size
0.44 Acres
Year renovated
1937
Sq. Ft.
1,735
Year built
1937
Style
Single Family Residential
County
Marin County
APN
033-071-16
Parking Spaces
Basement
Accessible
HOA Dues
Garage
Features
Last updated by owner on Jul 13, 2026.

Property details

Around this home

Schools

Edna Maguire Elementary School

Public K-5 • Assigned • 0.4mi

10/10
Mill Valley Middle School

Public 6-8 • Assigned • 0.9mi

9/10
Tamalpais High School

Public 9-12 • Assigned • 1.3mi

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)
59
47
60
48
66
50
64
48
69
51
69
52
68
53
76
56
74
57
72
55
61
50
56
47
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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
$2.67M – $3.23M

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Property information provided by BAREIS when last listed in 2025. This data may not match public records. Learn more.
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GreatSchools Ratings provided by GreatSchools.org.