Google street view image for 31 Shell Rd Unit A, Mill Valley, CA 94941

Off market mar 2020 for $2M

$2,470,243

Est. refi paymentEst. refi $13,604/mo

•

1 ba

•

1,512

sq ft

31 Shell Rd Unit A, Mill Valley, CA 94941

About this home

31 Shell Rd Unit A is a 1,512 square foot house on a 0.32 acre lot with 3 bedrooms and 1 bathroom. - it last sold on March 02, 2020 for $2,000,000. Based on Redfin's Mill Valley data, we estimate the home's value is $2,470,243.

Single-familyProperty Type

1940Year Built

0.32 acresLot Size

$1,634Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$2,470,243

$470K since sold in March 2020$156K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 22.4% higher than the average sale price ($2.02M) of 5 comparable homes.

SOLD AUG 20, 2026
$2,100,000
A
3 beds2 baths1,948 sq ft
1407 Casa Buena Dr, Corte Madera, CA 94925
SOLD OCT 5, 2026
$1,500,000
B
3 beds1 bath1,118 sq ft
143 Richardson Dr, Mill Valley, CA 94941
SOLD SEP 29, 2026
$3,415,000
C
4 beds2 baths1,917 sq ft
114 Lomita Dr, Mill Valley, CA 94941
SOLD SEP 9, 2026
$2,000,000
D
3 beds2 baths1,414 sq ft
951 Meadowsweet Dr, Corte Madera, CA 94925
SOLD OCT 5, 2026
$1,075,000
E
2 beds1 bath907 sq ft
40 S Knoll Rd, Mill Valley, CA 94941

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Earn from this home

Sell

$951,555

Est. take-home

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Est. cash available

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Rent

$5,155/mo

Redfin rental estimate

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Market trends in 94941, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

104.8%

2.4% MoM

Median sale price

$2.0M

$205K MoM

Avg. days on market

21d

6 days MoM

Recently sold homes

12 MoM

New listings for sale

OPEN TODAY, 2PM TO 4PM
$1,475,000
2 beds2.5 baths1,702 sq ft
838 Autumn Ln, Mill Valley, CA 94941
OPEN SUN, 2PM TO 4PM
$3,495,000
4 beds3 baths3,207 sq ft
528 Montford Ave, Mill Valley, CA 94941
OPEN SUN, 12PM TO 4PM
$2,300,000
4 beds2 baths2,070 sq ft
4 Longfellow Rd, Mill Valley, CA 94941
OPEN TODAY, 1PM TO 4PM
$2,250,000
4 beds3.5 baths2,577 sq ft
550 Edgewood Ave, Mill Valley, CA 94941
OPEN TODAY, 11:30AM TO 1:30PM
$1,995,000
3 beds1 bath1,508 sq ft
41 Walnut Ave, Mill Valley, CA 94941
OPEN TODAY, 2PM TO 4PM
$2,250,000
2 beds3 baths1,898 sq ft
17 De Silva Island Dr, Mill Valley, CA 94941
OPEN TODAY, 1PM TO 4PM
$1,695,000
3 beds2 baths1,350 sq ft
251 Flamingo Rd, Mill Valley, CA 94941
OPEN TODAY, 2PM TO 4PM
$1,995,000
4 beds3 baths1,983 sq ft
470 Wellesley Ave, Mill Valley, CA 94941
$1,925,000
2 beds2 baths1,890 sq ft
425 Montford Ave, Mill Valley, CA 94941
See all

Provided by Redfin

Sale history for 31 Shell Rd Unit A

Year

Property tax

Land + Additions

Assessment*

2025

$29,053 (+3.5%)

$1,450,150 + $780,850

$2,231,000

2024

$28,064 (+1.7%)

$1,421,719 + $765,541

$2,187,260

2023

$27,583 (+3.4%)

$1,393,847 + $750,533

$2,144,380

2022

$26,663 (+1.6%)

$1,366,521 + $735,819

$2,102,340

2021

$26,248 (+218.9%)

$1,339,728 + $721,392

$2,061,120

2020

$8,230 (+23.2%)

$1,313,468 + $707,252

$2,020,720

2019

$6,679 (+6.2%)

$88,053 + $325,139

$413,192

2018

$6,288 (+6.9%)

$86,327 + $318,765

$405,092

2017

$5,884 (+6.4%)

$82,976 + $306,390

$389,366

2016

$5,528 (+12.0%)

$82,976 + $306,390

$389,366

2015

$4,936 (+1.5%)

$81,349 + $300,383

$381,732

2014

$4,861 (−0.2%)

$78,558 + $290,076

$368,634

2013

$4,870 (+2.4%)

$78,558 + $290,076

$368,634

2012

$4,758 (+3.2%)

$78,203 + $288,767

$366,970

2011

$4,611 (+1.3%)

$76,670 + $283,106

$359,776

2010

$4,553 (+5.2%)

$75,167 + $277,556

$352,723

2009

$4,327 (+3.0%)

$74,605 + $275,482

$350,087

2008

$4,200

$74,783 + $276,137

$350,920

Tax history for 31 Shell Rd Unit A

Year

Property tax

Land + Additions

Assessment*

2025

$29,053 (+3.5%)

$1,450,150 + $780,850

$2,231,000

2024

$28,064 (+1.7%)

$1,421,719 + $765,541

$2,187,260

2023

$27,583 (+3.4%)

$1,393,847 + $750,533

$2,144,380

2022

$26,663 (+1.6%)

$1,366,521 + $735,819

$2,102,340

2021

$26,248 (+218.9%)

$1,339,728 + $721,392

$2,061,120

2020

$8,230 (+23.2%)

$1,313,468 + $707,252

$2,020,720

2019

$6,679 (+6.2%)

$88,053 + $325,139

$413,192

2018

$6,288 (+6.9%)

$86,327 + $318,765

$405,092

2017

$5,884 (+6.4%)

$82,976 + $306,390

$389,366

2016

$5,528 (+12.0%)

$82,976 + $306,390

$389,366

2015

$4,936 (+1.5%)

$81,349 + $300,383

$381,732

2014

$4,861 (−0.2%)

$78,558 + $290,076

$368,634

2013

$4,870 (+2.4%)

$78,558 + $290,076

$368,634

2012

$4,758 (+3.2%)

$78,203 + $288,767

$366,970

2011

$4,611 (+1.3%)

$76,670 + $283,106

$359,776

2010

$4,553 (+5.2%)

$75,167 + $277,556

$352,723

2009

$4,327 (+3.0%)

$74,605 + $275,482

$350,087

2008

$4,200

$74,783 + $276,137

$350,920

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Property details

Interior

Fireplace Information
# of Fireplaces: 1
Has Fireplace

Exterior

Exterior Information
Building Style Type: Contemporary
Building Construction Quality: Average

Property Information
Subdivision Name: ALTO
Living Sq. Ft: 1,512
Building Sq. Ft: 1,512
# of Units: 1
# of Stories: 1
Legal Description: BLK B LOT 50

Lot Information
# of Buildings: 1
Land Sq. Ft: 14,000
Legal Lot Number: 50
Legal Block Number: B
Municipality Name: MILL VALLEY SCHOOL AREA (ALTO)
Acres: 0.3214
County Use Description: 1 FAMILY RESID

Financial

Assessor Information
Assessment Year: 2026
Tax Area: MILL VALLEY SCHOOL AREA (ALTO)

Public facts

Beds: 3
Baths: 1.0
Sq. Ft.: 1,512
Stories: 1.0
Lot Size: 0.32 acres
Style: Single Family Residential
Year Built: 1940
Year Renovated: 1940
County: Marin County
APN: 033-081-04

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

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

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk 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

In this area, properties receive around 10.6 hours in June and 5 hours in December, placing it above the U.S. average for solar exposure.

10.6 hrs

5 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$2.35M – $2.84M

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Home values near 31 Shell Rd Unit A

Data from public records.

Address	Redfin Estimate
24 Shell Road, Mill Valley, CA 3 Beds \| 2 Baths \| 1400 Sq. Ft.	$2,560,416
36 Shell Road, Mill Valley, CA 3 Beds \| 3 Baths \| 2056 Sq. Ft.	$2,431,837

Address	Redfin Estimate
37 Shell Road, Mill Valley, CA 2 Beds \| 1 Baths \| 1342 Sq. Ft.	$1,633,452
41 Shell Road, Mill Valley, CA 6 Beds \| 4.5 Baths \| 3775 Sq. Ft.	$6,364,569

Address	Redfin Estimate
38 Shell Road, Mill Valley, CA 3 Beds \| 3 Baths \| 2526 Sq. Ft.	$2,689,559
30 Shell Road, Mill Valley, CA 4 Beds \| 4 Baths \| 1853 Sq. Ft.	$2,637,270

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