20 Shell Road, Mill Valley, CA 94941
Property image
Property image
SOLD
OCT 7, 2025

20 Shell Road
Mill Valley, CA 94941

Alto
  • 3 Beds
  • 1.5 Baths
  • 1,735 sqft (on 0.44 acres)

$2,505,000

Last Sold: Oct 7, 2025
28% over list $1.95M
$1,444/sqft
Est. Refi. Payment $14,943/mo*
Refinance Your Home

$2,505,000

Last Sold: Oct 7, 2025
28% over list $1.95M
$1,444/sqft
Est. Refi. Payment $14,943/mo*
Refinance Your Home
3 Beds
1.5 Baths
1,735 sqft
(on 0.44 acres)

Local Information

  • Map ViewExplore the area around 20 Shell Road.
  • Schools5 Elementary Schools1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1937
Lot Size
0.44 acres
Living Area
1,735 sqft
Price/Sqft
$1,444/sqft
Parking
Garage
HOA
None

About this House

Wonderful 1937 home situated on a 19,000 sq ft level corner lot. 3 bedrooms, 1 1/4 baths. Major repairs done to the framing, footings, foundation, entry stairs and more in 2009-2010. A rare find with so many possibilites. Convenient to shopping, freeway, downtown Mill Valley, etc.
20 Shell Road, Mill Valley, CA 94941 is a 3 bedroom, 2 bathroom, 1,735 sqft single-family home in Alto, built in 1937. It last sold for $2,505,000 on Oct 7, 2025 (28% above the $1,950,000 asking price). It is currently off market. The Trulia Estimate is $2,631,200, with a rent estimate of $7,110/month.
Contact this Building
Property Website

Home Details for 20 Shell Road

Active Status

MLS Status: Closed

Interior Features

Interior Details
Basement: PartialNumber of Rooms: 6Types of Rooms: Bedroom, Bathroom, Dining Room, Family Room, Kitchen, Living Room
Beds & Baths
Number of Bedrooms: 3Number of Bathrooms: 2Number of Bathrooms (full): 1Number of Bathrooms (half): 1
Dimensions and Layout
Living Area: 1735 Square Feet
Appliances & Utilities
Utilities: PublicAppliances: Free-Standing Refrigerator, Dryer, WasherDryerLaundry: Inside RoomWasher
Heating & Cooling
Heating: Central,Fireplace(s)No CoolingAir Conditioning: NoneHas HeatingHeating Fuel: Central
Fireplace & Spa
Number of Fireplaces: 1Fireplace: Living Room, Stone, Wood BurningHas a Fireplace
Windows, Doors, Floors & Walls
Window: Dual Pane PartialFlooring: Carpet, Linoleum, Parquet, Tile, Wood
Levels, Entrance, & Accessibility
Stories: 2Levels: TwoFloors: Carpet, Linoleum, Parquet, Tile, Wood
View
No View

Exterior Features

Exterior Home Features
Roof: CompositionFoundation: Concrete Perimeter
Parking & Garage
Number of Garage Spaces: 2Number of Covered Spaces: 2No CarportHas a GarageNo Attached GarageHas Open ParkingParking Spaces: 10Parking: Side By Side,Uncovered Parking Spaces 2+,Unpaved
Water & Sewer
Sewer: Public Sewer

Property Information

Year Built
Year Built: 1937
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: DetachedArchitecture: Detached
Building
Not Attached Property
Property Information
Parcel Number: 03307116

Price & Status

Price
List Price: $1,950,000Price Per Sqft: $1,444/sqft
Status Change & Dates
Possession Timing: Close Of Escrow

Location

Direction & Address
City: Mill Valley

Building

Building Area
Building Area: 1735 Square Feet

Community

Not Senior Community

HOA

Association for this Listing: Marin CountyNo HOA

Lot Information

Lot Area: 0.44 acres

Documents

Disclaimer: All data, photos, visualizations, and information regarding a property, including the property's compliance with state and local legal requirements and all measurements and calculations of area, have been obtained from various sources, and may include such material that has been generated by use of artificial intelligence. Such information and material have not been and will not be verified for accuracy by the listing broker or the multiple listing service, and are not guaranteed as complete, accurate or reliable. Such information and material should be independently reviewed and verified for accuracy. This information and material are intended for the personal use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Listing Info

Special Conditions: Offer As Is, Trust

Mobile R/V

Mobile Home Park
Mobile Home Units: Feet

Miscellaneous

BasementMls Number: 325074288Listing Url
Last check for updates: about 10 hours ago
Listed by Lou La Gatta DRE #01124649, (415) 608-4842
Marin Realty Group, (415) 927-4443
Bought with: Stephanie Lamarre DRE #01840604, (415) 806-3176, Golden Gate Sotheby's, (415) 464-9300
Originating MLS: Marin County
Source: BAREIS, MLS#325074288

Price History for 20 Shell Road

DatePriceEventSource
10/07/2025$2,505,000Sold
BAREIS #325074288
09/30/2025$1,950,000PendingBAREIS #325074288
09/16/2025$1,950,000Listed For SaleBAREIS #325074288

Market trends in Mill Valley

Last updated June 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$2.4M
$295KMoM
Sale-to-List Price
108.3%
3.0%MoM
Price per sq ft
$1.08K
$70MoM
Available listings
54
25MoM
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Property Tax and Assessment

Year2025
Tax$5,512
Assessment$119,518
Home facts updated by county records

Comparable Sales for 20 Shell Road

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
26 Plaza Drive, Mill Valley, CA
0.06
Single-Family Home
$1,620,000
09/17/25
3
2
1,347
10 Somerset Lane, Mill Valley, CA
0.35
Single-Family Home
$1,760,000
04/02/26
3
2
1,576
22 Keats Drive, Mill Valley, CA
0.51
Single-Family Home
$1,854,000
08/20/25
3
2
1,956
82 Meadow Drive, Mill Valley, CA
0.36
Single-Family Home
$1,615,000
11/10/25
3
2
1,216
3 Longfellow Road, Mill Valley, CA
0.39
Single-Family Home
$2,507,000
03/24/26
4
3
2,337
169 Kipling Drive, Mill Valley, CA
0.60
Single-Family Home
$2,001,000
08/27/25
3
2
1,764
18 Stanton Way, Mill Valley, CA
0.63
Single-Family Home
$3,670,517
02/12/26
3
2.5
1,919
101 Madera Del Presidio Drive, Corte Madera, CA
0.70
Single-Family Home
$2,400,000
07/01/26
3
2
1,942
1 Vasco Drive, Mill Valley, CA
0.57
Single-Family Home
$2,950,000
09/26/25
4
3
3,035

Nearby homes

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Assigned Schools

These are the assigned schools for 20 Shell Road.
View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

Alto
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Alto

At least 1 Trulia users voted on each feature.

  • 100 % Say it's dog friendly

  • 100 % Say they plan to stay for at least 5 years

  • 100 % Say there's holiday spirit

  • 100 % Say it's walkable to grocery stores

  • 100 % Say parking is easy

  • 100 % Say neighbors are friendly

  • 50 % Say it's quiet

Sourced by Trulia users. Learn more about our methodology.
  • Annachristinawest
    "Lots of dog owners and nearby walking and hiking paths make it easy to exercise your pooch. Many dog lovers in our neighborhood "
    0
    Flag
  • danielshiner
    "Having lived in Mill Valley for thirty years, I have to agree with the many sources, including the Smithsonian, who rate this the best place to live in the country. Small town ambiance, ten minutes to San Francisco, a half hour to the wine country. Lots of local culture--theater and music venues abound, with plays, comedy. ballet, opera, and anything else one could desire. The only drawback is the cost of housing."
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    Flag

LGBTQ Local Legal Protections

Apartments for Rent

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Explore by feature - Pet Friendly

16 pet-friendly rentals in Mill Valley, CA

Explore by feature - Garage

16 rentals with a garage in Mill Valley, CA

Explore by feature - Air Conditioning

8 rentals with air conditioning in Mill Valley, CA

Explore by feature - Pool

7 rentals with a pool in Mill Valley, CA

Explore by feature - Washer/dryer

26 rentals with a washer/dryer in Mill Valley, CA

Homes for sale near 20 Shell Road

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Off Market Homes Near 20 Shell Road

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All data, photos, visualizations, and information regarding a property, including the property's compliance with state and local legal requirements and all measurements and calculations of area, have been obtained from various sources, and may include such material that has been generated by use of artificial intelligence. Such information and material have not been and will not be verified for accuracy by the listing broker or the multiple listing service, and are not guaranteed as complete, accurate or reliable. Such information and material should be independently reviewed and verified for accuracy. This information and material are intended for the personal use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
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