31 Shell Rd
Mill Valley, CA 94941
Alto- 4 Beds
- 3 Baths
- 2,305 sqft (on 0.38 acres)
4 Beds
3 Baths
2,305 sqft
(on 0.38 acres)
Local Information
-- mins to
Home Highlights
Property Type
Single-Family Home
Year Built
1940
Lot Size
0.38 acres
Living Area
2,305 sqft
Price/Sqft
$1,553
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
Home Details for 31 Shell Rd
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Heating & Cooling Heating: OtherHeating Fuel: Other |
Levels, Entrance, & Accessibility Stories: 1 |
Interior Details Number of Rooms: 4Types of Rooms: Dining Room |
Fireplace & Spa Fireplace |
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Exterior Home Features Roof: CompositionExterior: Shingle Not Wood |
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Year Built Year Built: 1940Year Updated: 1940 |
Property Type / Style Property Type: Single Family HomeArchitecture: Contemporary |
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Units in Building: 1 |
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Lot Area: 0.38 acres |
Price History for 31 Shell Rd
| Date | Price | Event | Source |
|---|---|---|---|
| 03/02/2020 | $2,000,000 | Sold | BAREIS #22000236 |
| 02/02/2020 | $2,200,000 | Pending | Agent Provided |
| 01/06/2020 | $2,200,000 | Listed For Sale | Agent Provided |
Market trends in Mill Valley
Last updated June 2026
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
Property Tax and Assessment
| Year | 2025 |
|---|---|
| Tax | $29,053 |
| Assessment | $2,187,260 |
Home facts updated by county records
Comparable Sales for 31 Shell Rd
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.09 | Single-Family Home | $2,505,000 | 10/07/25 | 3 | 1.5 | 1,735 | |
0.31 | Single-Family Home | $2,507,000 | 03/24/26 | 4 | 3 | 2,337 | |
0.52 | Single-Family Home | $2,950,000 | 09/26/25 | 4 | 3 | 3,035 | |
0.37 | Single-Family Home | $2,805,000 | 04/14/26 | 5 | 3 | 2,490 | |
0.45 | Single-Family Home | $2,500,000 | 04/09/26 | 4 | 3 | 2,190 | |
0.63 | Single-Family Home | $2,145,150 | 10/24/25 | 4 | 2.5 | 2,640 | |
0.50 | Single-Family Home | $5,000,000 | 01/12/26 | 4 | 3 | 2,252 | |
0.55 | Single-Family Home | $2,810,000 | 05/06/26 | 4 | 3 | 2,550 | |
0.57 | Single-Family Home | $2,550,000 | 04/20/26 | 4 | 2.5 | 2,515 | |
0.11 | Single-Family Home | $1,620,000 | 09/17/25 | 3 | 2 | 1,347 |
Nearby homes
Get a sense of prices in the area by checking nearby homes.Assigned Schools
These are the assigned schools for 31 Shell Rd.
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.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections
Apartments for Rent
Homes for sale near 31 Shell Rd
Off Market Homes Near 31 Shell Rd
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 $3,580,300.
- 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 $2.4M. That is up $295K 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).

