OPEN SUN, 1PM TO 3PM

For sale

$6,295,000

Est. $42,441/mo —

•

3,583

sq ft

33 Shell Rd, Mill Valley, CA 94941

About this home

Set well back from the street behind a landscaped entry, 33 Shell Road sits on a large, flat, expansive lot of approx. 13,300 sq ft in Mill Valley's Alto neighborhood, framed by mature trees for exceptional privacy. The light-filled, fully detached home offers about 3,391 sq ft with white oak floors, formal living and dining rooms, a large mud room, and an eat-in kitchen with quartz counters, an island, dual sinks and new Bosch appliances that opens to the great room. All five bedrooms share one level, along with a central lounge and laundry. The primary suite has Mt. Tam views, dual walk-in closets, a soaking tub and a walk-in shower. There are 3.5 baths, plus a full pool bath. Outside, nearly 1,600 sq ft of decks and porch include an outdoor kitchen, a living green wall and a covered gym deck, all opening to a manicured lawn, pool, hot tub and bocce court. 2-car garage, side parking, and a workshop with storage. Walk to the Alto shopping center and Horse Hill trails; 6 miles to the Golden Gate Bridge.

Single-familyProperty Type

2014Year Built

0.31 acresLot Size

$1,757Price/Sq.Ft.

2 garage spacesParking

Listed by Michael Kramer •DRE #DRE #01918367 • City Real Estate

•415-812-5239 (agent)

•mpkramer78@gmail.com (agent)

•415-325-2295 (broker)

Listing updated: Oct 17, 2026 at 06:49pm

Redfin checked: a few seconds ago

•Source:San Francisco MLS #326087549

Payment calculator

$42,441 per month

Principal and interest$34,782

Property taxes

$6,557

HOA dues

Home insurance

$1,102

Utilities

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Next available date: Sunday, October 18

Open houses

Sunday, Oct 18

1:00pm - 3:00pm

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Around this home

Schools

K - 12
Preschool & daycare

Edna Maguire Elementary School

Public K-5 • Assigned • 0.4mi

10/10

Mill Valley Middle School

Public 6-8 • Assigned • 0.8mi

9/10

Tamalpais High School

Public 9-12 • Assigned • 1.2mi

10/10

Provided by GreatSchools

About Alto Sutton

Manor

Alto Sutton Manor, located between Mill Valley and Sausalito, is a residential and hillside Alto neighborhood with winding lanes and bay-facing outlooks. The character concentrates around the Camino Alto/Alto Plaza corridor, where a small cluster of local storefronts and everyday errands sets the neighborhood’s tempo. Nearby pillars include the Bay Model Visitor Center, the Marinship district’s industrial-arts waterfront, and the Marin City Farmers Market. Housing reads as mid-century and contemporary updates tucked into oak and eucalyptus edges. Daily life leans toward trail time and water views, with quick transitions from ridgeline paths to shoreline. The geography feels perched, with foggy mornings and clear afternoon light shifting across Richardson Bay.

Provided by Walk Score and Local Logic

Property details

Interior
Exterior
Finance

Kitchen

Bathroom

Bedroom

Living

Dining

Interior features
Gas-start fireplace in the living room

Bedrooms
5 bedrooms

Bathrooms
4 full bathrooms
1 half bathroom

Laundry & utility
Washer
Dryer

Heating & cooling
Gas heating
Cooling: See Remarks, Other

Sale and tax history for 33 Shell Rd

Sale History
Tax History

Year

Property tax

Land + Additions

Assessment*

2025

$31,858 (+3.4%)

$1,116,407 + $1,250,320

$2,366,727

2024

$30,821 (+1.4%)

$1,094,519 + $1,225,810

$2,320,329

2023

$30,404 (+3.3%)

$1,073,065 + $1,201,780

$2,274,845

2022

$29,427 (+1.5%)

$1,052,028 + $1,178,220

$2,230,248

2021

$28,982 (+0.3%)

$1,031,407 + $1,155,120

$2,186,527

2020

$28,905 (+2.6%)

$1,011,185 + $1,132,480

$2,143,665

2019

$28,179 (+1.6%)

$1,000,824 + $1,120,870

$2,121,694

2018

$27,723 (+2.9%)

$981,206 + $1,098,900

$2,080,106

2017

$26,929 (+5.4%)

$943,109 + $1,056,240

$1,999,349

2016

$25,559 (+4.6%)

$943,109 + $1,056,240

$1,999,349

2015

$24,436 (+46.9%)

$924,621 + $1,035,530

$1,960,151

2014

$16,634 (+45.2%)

$610,500 + $650,000

$1,260,500

2013

$11,458 (+2.8%)

$610,500 + $650,000

$1,260,500

2012

$11,144 (+1.7%)

$555,000 + $245,000

$800,000

2011

$10,958 (+0.9%)

$555,000 + $245,000

$800,000

2010

$10,865 (−18.0%)

$555,000 + $245,000

$800,000

2009

$13,246 (+8.7%)

$750,295 + $216,261

$966,556

2008

$12,181

$824,500 + $237,650

$1,062,150

Public record

Beds

Baths

Stories

—

Lot width

—

Lot depth

—

Lot size

0.31 Acres

Year renovated

2014

Finished Sq. Ft.

3,583

Unfinished Sq. Ft.

—

Total Sq. Ft.

3,583

Year built

2014

Style

Single Family Residential

County

Marin County

APN

033-081-03

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 16, 2026.

Climate risks

5/10 Flood Factor

Estimated 59-73% chance of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

3/10 Heat Factor

8 days above 83° expected this year, 19 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

8/10 Air Factor

13 unhealthy days expected this year, 13 days in 30 years

Provided by First Street

Historical weather

Mill Valley, CA • 94941

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

85/ 100

Very good sunlight

Sunscore

This home ranks in the top 12% for direct sun exposure in Mill Valley. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

10 hrs

6.1 hrs

JuneDecember

Provided by Shadowmap

Redfin Estimate for 33 Shell Rd

$6,232,409

$63K under list price of $6.30M

Nearby comparable homes

The Redfin Estimate uses 5 recent nearby sales, priced between $2.5M to $4.8M.

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smaller lot
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smaller lot
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SOLD SEP 2, 2026
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87 Bay Vista Dr, Mill Valley, CA 94941
$517/sq ft
smaller lot
60 years older
SOLD MAY 6, 2026
$2,810,000 Last sold price
4 beds3 baths2,550 sq ft
9 Underhill Rd, Mill Valley, CA 94941
$655/sq ft
smaller lot
49 years older
SOLD APR 9, 2026
$2,500,000 Last sold price
4 beds3 baths2,190 sq ft
138 Kipling Dr, Mill Valley, CA 94941
$615/sq ft
smaller lot
56 years older

Rental earnings

Est. $10,530 per month, based on comparable rentals

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