31 Shell Rd, Mill Valley, CA 94941
Property image
Property image
OFF MARKET

$3,708,600

Trulia Estimate
  • 4 Beds
  • 3 Baths
  • 2,305 sqft (on 0.38 acres)

31 Shell Rd, Mill Valley, CA 94941

Alto
Est. Refi. Payment $23,366/mo*
Refinance Your Home
Currently Off Market - Sold Mar 2, 2020 for $2,000,000

Home Value

Trulia Estimate
$3.71M
Since last month
Increased$63K (+1.7%)
Since last year
Increased$481K (+14.9%)
Since last sale
Increased$2M (+85.2%)
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 +263% in the last 10 years
MonthEstimated value
2026
September 2026$3.7M
August 2026$3.64M
July 2026$3.58M
June 2026$3.57M
May 2026$3.73M
April 2026$3.49M
March 2026$3.51M
February 2026$3.44M
January 2026$3.23M
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
0.18
Single-Family Home
$3,060,000
08/11/26
3
2.5
2,594
20 Shell Road, Mill Valley, CA
0.09
Single-Family Home
$2,505,000
10/07/25
3
1.5
1,735
3 Longfellow Road, Mill Valley, CA
0.31
Single-Family Home
$2,507,000
03/24/26
4
3
2,337
105 Kipling Drive, Mill Valley, CA
0.37
Single-Family Home
$2,805,000
04/14/26
5
3
2,490
138 Kipling Drive, Mill Valley, CA
0.45
Single-Family Home
$2,500,000
04/09/26
4
3
2,190
11 Overhill Road, Mill Valley, CA
0.63
Single-Family Home
$2,145,150
10/24/25
4
2.5
2,640
17 Vasco Dr, Mill Valley, CA
0.50
Single-Family Home
$5,000,000
01/12/26
4
3
2,252
9 Underhill Road, Mill Valley, CA
0.55
Single-Family Home
$2,810,000
05/06/26
4
3
2,550
15 Underhill Road, Mill Valley, CA
0.57
Single-Family Home
$2,550,000
04/20/26
4
2.5
2,515
137 Tiburon Blvd, Mill Valley, CA
0.61
Single-Family Home
$1,998,000
11/04/25
4
3
1,997

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
29 Shell Road, Mill Valley, CA 94941
0.01
$2,210,500
3
2
1,300
Off Market
20 Shell Road, Mill Valley, CA 94941
0.09
$2,579,400
3
1.5
1,735
Off Market
44 Plaza Drive, Mill Valley, CA 94941
0.10
$1,374,900
2
1
1,092
Off Market
46 Plaza Drive, Mill Valley, CA 94941
0.09
$1,660,000
2
2
1,320
Off Market
26 Plaza Drive, Mill Valley, CA 94941
0.11
$1,667,600
3
2
1,347
Off Market
40 Meadow Drive, Mill Valley, CA 94941
0.08
$1,975,500
3
2
1,281
Off Market
6 Tower Drive, Mill Valley, CA 94941
0.10
$2,735,600
3
3
2,078
Off Market
7 Shell Road, Mill Valley, CA 94941
0.15
$1,681,900
3
2
1,098
Off Market
44 Meadow Dr, Mill Valley, CA 94941
0.11
$1,894,900
3
2
1,221
Off Market
45 Meadow Drive, Mill Valley, CA 94941
0.12
$1,816,600
3
2
1,216
Off Market
35 Valley Rd, Mill Valley, CA 94941
0.16
$1,994,600
4
4
2,476
Off Market
50 Meadow Drive, Mill Valley, CA 94941
0.14
$1,749,300
3
2
1,216
Off Market

Local Information

  • Map ViewExplore the area around 31 Shell Rd.
  • Schools5 Elementary Schools1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Single-Family Home
Built in 1940
0.38 acre lot
2,305 sqft
$1,609/sqft

About this House

This is an adorable property with a one story three bedroom main house, a detached 40 x 20 foot studio and a detached one bedroom guest house. The lot is a beautifully landscaped English garden, with level lawn, raised gardens, fruit trees, great sun and privacy. Wood floors in all three structures, beautiful wood details, detached storage building and lots of off street parking. 2020-02-28
31 Shell Rd, Mill Valley, CA 94941 is a 4 bedroom, 3 bathroom, 2,305 sqft single-family home in Alto, built in 1940. It last sold for $2,000,000 on Mar 2, 2020. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $3,708,600.

Home Details for 31 Shell Rd

Interior Features

Levels, Entrance, & Accessibility
Stories: 1
Interior Details
Number of Rooms: 4Types of Rooms: Dining Room
Fireplace & Spa
Fireplace

Exterior Features

Exterior Home Features
Roof: CompositionExterior: Shingle Not Wood

Property Information

Year Built
Year Built: 1940Year Updated: 1940
Property Type / Style
Property Type: Single Family HomeArchitecture: Contemporary

Community

Units in Building: 1

Lot Information

Lot Area: 0.38 acres

Price and Tax history

DateEventPrice
Mar 2, 2020
Source: BAREIS #22000236
Sold
$2,000,000
Feb 2, 2020
Source: Agent Provided
Pending
$2,200,000
Jan 6, 2020
Source: Agent Provided
Listed For Sale
$2,200,000

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

Frequently asked questions about 31 Shell Rd

  • What is 31 Shell Rd estimated to be worth?
    Trulia's estimated value for 31 Shell Rd in Mill Valley, CA is $3,708,600.
  • What is the price history for 31 Shell Rd?
    31 Shell Rd in Mill Valley, CA last sold for $2,000,000 in March 2020.
  • 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.
  • How big is the lot at 31 Shell Rd?
    The lot at 31 Shell Rd in Mill Valley, CA is about 0.38 acres (16,562 sq ft).

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