NOT LISTED FOR SALE

20 Shell Rd Mill Valley, CA 94941

Sycamore Park Neighborhood

Estimated Value: $2,073,807 - $2,632,000

3 Beds
1.5 Baths
1,735 Sq Ft
$1,405/Sq Ft Est. Value

Sale Details

Date Sold: October 7, 2025

Last sale price $2,505,000 $1,444 Per Sq Ft

Est. 3% decrease in value since last sale

Current estimated payment $13,604 / mo

14 Days on Market

Highlights

  • 0.44 Acre Lot
  • Wood Flooring
  • Corner Lot
  • Mill Valley Middle School Rated A
  • Main Floor Bedroom
  • Formal Dining Room

About This Home

As of October 2025

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.

Last Agent to Sell the Property

Lou La Gatta

Marin Realty Group License #01124649 Listed on: 09/16/2025

Last Buyer's Agent

Stephanie Lamarre

Golden Gate Sotheby's License #01840604

Golden Gate Sotheby's

Home Details

Home Type

  • Single Family

Year Built

  • Built in 1937

Lot Details

  • 19,001 Sq Ft Lot
  • Corner Lot

Parking

  • 2 Car Garage
  • Unpaved Driveway
  • Uncovered Parking

Home Design

  • Side-by-Side
  • Concrete Foundation
  • Composition Roof

Interior Spaces

  • 1,735 Sq Ft Home
  • 2-Story Property
  • Wood Burning Fireplace
  • Stone Fireplace
  • Double Pane Windows
  • Family Room
  • Living Room with Fireplace
  • Formal Dining Room
  • Partial Basement
  • Tile Countertops

Flooring

  • Wood
  • Parquet
  • Carpet
  • Linoleum
  • Tile

Bedrooms and Bathrooms

  • 3 Bedrooms
  • Main Floor Bedroom
  • Bathroom on Main Level
  • Tile Bathroom Countertop
  • Bathtub
  • Separate Shower

Laundry

  • Laundry in unit
  • Dryer
  • Washer

Utilities

  • No Cooling
  • Central Heating

Listing and Financial Details

  • Assessor Parcel Number 033-071-16

Home Details

Home Type

Single Family

Year Built

Built in 1937

Lot Details

0.44 Acres

Parking

2

Listing Details

  • Type: Residential
  • Property Sub Type: Single Family Residence
  • Subtype Description: Detached
  • Directions To Property: East Blithedale to Tower Drive to (R) Meadow Drive to the corner of Meadow and Shell
  • Lot Size Acres: 0.4362
  • Stories: 2
  • Levels: Two
  • Reso Window Features: Dual Pane Partial
  • Special Features: None

Interior Features

  • Appliances: Free Standing Refrigerator
  • Number Of Fireplaces: 1
  • Bedrooms: 3
  • Half Bathrooms: 1
  • Full Bathrooms: 1
  • Dining Room Features: Formal Room
  • Basement: Partial
  • Flooring: Carpet, Linoleum, Parquet, Tile, Wood
  • Square Footage: 1735.00
  • Bathroom Features: Shower Stall(s), Tile, Tub
  • Bathrooms: 2
  • Fireplace Features: Living Room, Stone, Wood Burning
  • Kitchen Features: Tile Counter
  • Main Level: Bedroom(s), Family Room, Full Bath(s), Kitchen, Living Room, Partial Bath(s)

Exterior Features

  • Foundation: Concrete Perimeter
  • Lot Features: Corner
  • Property Condition: Original
  • Roof: Composition

Garage/Parking

  • Parking Features: Side-by-Side, Uncovered Parking Spaces 2+
  • Total Parking Spaces: 10.00
  • Garage Spaces: 2.00
  • Driveway/Sidewalks: Unpaved

Utilities

  • Cooling: None
  • Sewer: Public Sewer
  • Utilities: Public
  • Water Source: Public, Water District
  • Heating: Central, Fireplace(s)
  • Laundry Features: Dryer Included, Inside Room, Washer Included

Lot Info

  • Assessor Parcel Number: 033-071-16
  • Lot Size Sq Ft: 19001.00

Building Info

  • Year Built: 1937

Ownership History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Name Owned For Owner Type

Purchase Details

Listed on
Sep 16, 2025
Closed on
Oct 3, 2025
Sold by
Bought by
Seller's Agent
Lou La Gatta
Marin Realty Group
Buyer's Agent
Stephanie Lamarre
Golden Gate Sotheby's
List Price
$1,950,000
Sold Price
$2,505,000
Premium/Discount to List
$555,000
28.46%
Views
23
Current Estimated Value
$2,438,452

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
-$66,548
Avg. Annual Appreciation
-4.12%

Purchase Details

Closed on
Jul 21, 2003
Sold by
Bought by
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
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Average Value
Not Available
List Price
Sold Price
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Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Purchase History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Buyer Sale Price Title Company
$2,505,000 Fidelity National Title Compan
-- --
Source: Public Records

Property History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Event Price List to Sale Price per Sq Ft
10/07/2025 10/07/25 Sold $2,505,000 +28.5% $1,444 / Sq Ft
09/30/2025 09/30/25 Pending -- -- --
09/16/2025 09/16/25 For Sale $1,950,000 -- $1,124 / Sq Ft
Source: Bay Area Real Estate Information Services (BAREIS)

Tax History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $5,512 $119,518 $39,226 $80,292
2024 $5,363 $117,174 $38,457 $78,717
2023 $5,223 $114,877 $37,703 $77,174
2022 $5,094 $112,625 $36,964 $75,661
2021 $4,994 $110,391 $36,227 $74,164
2020 $5,144 $109,260 $35,856 $73,404
2019 $4,974 $107,118 $35,153 $71,965
2018 $4,458 $105,018 $34,464 $70,554
2017 $4,125 $102,959 $33,788 $69,171
2016 $3,851 $100,941 $33,126 $67,815
2015 $3,193 $99,424 $32,628 $66,796
2014 $3,074 $97,477 $31,989 $65,488
Source: Public Records

Agents Affiliated with this Home

  • Lou La Gatta

    Seller's Agent in 2025

    Lou La Gatta

    Marin Realty Group

    (415) 608-4842

    1 in this area

    14 Total Sales

    Lou La Gatta
    Section Image
  • Stephanie Lamarre

    Buyer's Agent in 2025

    Stephanie Lamarre

    Golden Gate Sotheby's

    (415) 806-3176

    3 in this area

    89 Total Sales

    Stephanie Lamarre
    Section Image
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Map

Source: Bay Area Real Estate Information Services (BAREIS)

MLS Number: 325074288

Bay Area Real Estate Information Services (BAREIS)

APN: 033-071-16

California Marin County Mill Valley 94941 Sycamore Park

20 Shell Rd, Mill Valley, CA

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

Bay Area Real Estate Information Services (BAREIS) Listing information deemed reliable but not guaranteed. Copyright 2026 Bay Area Real Estate Information Services, Inc. All Right Reserved.

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