20 Shell Road, Mill Valley, CA 94941
Property image
Property image
OFF MARKET

$2,572,200

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

20 Shell Road, Mill Valley, CA 94941

Alto
Est. Refi. Payment $16,105/mo*
Refinance Your Home
Currently Off Market - Sold Oct 7, 2025 for $2,505,000

Home Value

Trulia Estimate
$2.57M
Since last month
Decreased$49K (-1.9%)
Since last year
Increased$521K (+25.4%)
Since last sale
Increased$64K (+2.5%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +97% in the last 10 years
MonthEstimated value
2026
September 2026$2.57M
August 2026$2.62M
July 2026$2.63M
June 2026$2.54M
May 2026$2.55M
April 2026$2.6M
March 2026$2.61M
February 2026$2.52M
January 2026$2.49M
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
8 Greenfield Ct, Mill Valley, CA
0.20
Single-Family Home
$3,060,000
08/11/26
3
2.5
2,594
10 Somerset Lane, Mill Valley, CA
0.35
Single-Family Home
$1,760,000
04/02/26
3
2
1,576
1407 Casa Buena Drive, Corte Madera, CA
0.66
Single-Family Home
$2,100,000
08/20/26
3
2
1,948
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
18 Stanton Way, Mill Valley, CA
0.63
Single-Family Home
$3,670,517
02/12/26
3
2.5
1,919
951 Meadowsweet Drive, Corte Madera, CA
0.87
Single-Family Home
$2,000,000
09/09/26
3
2
1,414
101 Madera Del Presidio Drive, Corte Madera, CA
0.70
Single-Family Home
$2,400,000
07/01/26
3
2
1,942

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
7 Shell Road, Mill Valley, CA 94941
0.06
$1,692,900
3
2
1,098
Off Market
26 Plaza Drive, Mill Valley, CA 94941
0.06
$1,665,400
3
2
1,347
Off Market
29 Shell Road, Mill Valley, CA 94941
0.07
$2,221,100
3
2
1,300
Off Market
44 Plaza Drive, Mill Valley, CA 94941
0.12
$1,383,500
2
1
1,092
Off Market
46 Plaza Drive, Mill Valley, CA 94941
0.13
$1,671,500
2
2
1,320
Off Market
40 Meadow Drive, Mill Valley, CA 94941
0.17
$1,961,200
3
2
1,281
Off Market
11 Central Drive, Mill Valley, CA 94941
0.19
$1,157,400
2
1
832
Off Market
6 Tower Drive, Mill Valley, CA 94941
0.17
$2,720,100
3
3
2,078
Off Market
1 Courtney Lane, Mill Valley, CA 94941
0.21
$1,446,300
3
2.5
1,965
Off Market
35 Valley Rd, Mill Valley, CA 94941
0.19
$1,965,700
4
4
2,476
Off Market
8 Greenfield Ct, Mill Valley, CA 94941
0.20
$3,060,000
3
2.5
2,594
Recently Sold

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

Single-Family Home
Built in 1937
0.44 acre lot
1,735 sqft
$1,483/sqft
Garage

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). This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $2,572,200, with a rent estimate of $8,284/month.
Contact this Building
Property Website
Last check for updates: about 21 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

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: $1,950,000
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

Price and Tax history

DateEventPrice
Oct 7, 2025
Source: BAREIS #325074288
Sold
$2,505,000
Sep 30, 2025
Source: BAREIS #325074288
Pending
$1,950,000
Sep 16, 2025
Source: BAREIS #325074288
Listed For Sale
$1,950,000

Market trends in Mill Valley

Last updated August 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$2.28M
$200KMoM
Sale-to-List Price
—
Price per sq ft
$1.08K
$52MoM
Available listings
59
17MoM

Around this home

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."
    0
    Flag

LGBTQ Local Legal Protections

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.
Copyright 2026 Bay Area Real Estate Information Services, Inc. All Right Reserved.

Frequently asked questions about 20 Shell Road

  • What is 20 Shell Road estimated to be worth?
    Trulia's estimated value for 20 Shell Road in Mill Valley, CA is $2,572,200.
  • What is the price history for 20 Shell Road?
    20 Shell Road in Mill Valley, CA last sold for $2,505,000 in October 2025.
  • Is Mill Valley a buyer's or seller's market?
    Mill Valley is currently a seller's market, based on recent for-sale activity.
  • What's the median sale price in Mill Valley?
    The median sale price in Mill Valley is $2.28M. That is down $200K from the prior month.
  • Does 20 Shell Road have laundry facilities?
    Yes, 20 Shell Road in Mill Valley, CA has in-unit laundry.
  • How big is the lot at 20 Shell Road?
    The lot at 20 Shell Road in Mill Valley, CA is about 0.44 acres (19,001 sq ft).

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