Google street view image for 100 Underhill Rd, Mill Valley, CA 94941

Off Market Sep 2002 for $1.2M

$2,853,421

Est. refi paymentEst. refi $6,468/mo

•

3 ba

•

2,366

sq ft

100 Underhill Rd, Mill Valley, CA 94941

About this home

100 Underhill Rd is a 2,366 square foot house on a 10,220 square foot lot with 3 bedrooms and 3 bathrooms. - it last sold on September 27, 2002 for $1,275,000. Based on Redfin's Mill Valley data, we estimate the home's value is $2,853,421.

Single-familyProperty Type

1986Year Built

10,220 sq ftLot Size

$1,206Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$2,853,421

$1.6M since sold in September 2002$50K since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3.2% higher than the average sale price ($2.77M) of 6 comparable homes.

SOLD APR 24, 2026
$2,910,000
A
3 beds2.5 baths2,875 sq ft
42 Underhill Rd, Mill Valley, CA 94941
SOLD AUG 11, 2026
$3,060,000
B
3 beds2.5 baths2,594 sq ft
8 Greenfield Ct, Mill Valley, CA 94941
SOLD MAY 6, 2026
$2,810,000
C
4 beds3 baths2,550 sq ft
9 Underhill Rd, Mill Valley, CA 94941
SOLD APR 21, 2026
$2,860,000
D
3 beds2.5 baths2,489 sq ft
4 Meadow Ridge Dr, Corte Madera, CA 94925
SOLD APR 20, 2026
$2,550,000
E
4 beds2.5 baths2,515 sq ft
15 Underhill Rd, Mill Valley, CA 94941
SOLD JUL 1, 2026
$2,400,000
F
3 beds2 baths1,942 sq ft
101 Madera Del Presidio Dr, Corte Madera, CA 94925

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Earn from this home

Sell

$2,391,616

Est. take-home

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Refinance

Est. cash available

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Rent

$8,487/mo

Redfin rental estimate

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Market trends in 94941, CA

Last updated July 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

108.7%

0.1% MoM

Median sale price

$2.4M

$7K MoM

Avg. days on market

10d

1 days MoM

Recently sold homes

134

20 MoM

New listings for sale

OPEN TODAY, 1PM TO 3PM
$1,479,000
2 beds2 baths1,811 sq ft
94 Eucalyptus Knoll St #94, Mill Valley, CA 94941
OPEN TODAY, 1PM TO 3PM
$2,495,000
4 beds2 baths2,085 sq ft
60 Mesa Ave, Mill Valley, CA 94941
OPEN TODAY, 2PM TO 4PM
$3,599,000
4 beds3.5 baths3,232 sq ft
101 Sarah Dr, Mill Valley, CA 94941
(415) 474-1750
OPEN SUN, 12PM TO 2PM
$1,350,000
2 beds1 bath1,022 sq ft
204 Hawthorne Ave, Mill Valley, CA 94941
Lifestyle Realty
OPEN TODAY, 1PM TO 4PM
$1,588,000
3 beds2 baths— sq ft
206 Cardinal Rd, Mill Valley, CA 94941
OPEN TODAY, 2PM TO 4PM
$2,795,000
4 beds3 baths2,252 sq ft
133 Shelley Dr, Mill Valley, CA 94941
OPEN TODAY, 1PM TO 4PM
$2,795,000
3 beds2 baths2,389 sq ft
240 Perry St, Mill Valley, CA 94941
OPEN SUN, 1PM TO 4PM
$1,795,000
3 beds3 baths1,655 sq ft
642 Amaranth Blvd, Mill Valley, CA 94941
$1,150,000
3 beds2.5 baths1,374 sq ft
13 Wordsworth Ct, Mill Valley, CA 94941
eXp Realty of California Inc.
OPEN SUN, 2PM TO 4PM
$2,450,000
4 beds3.5 baths2,370 sq ft
274 Princeton Ave, Mill Valley, CA 94941
See all

Provided by Redfin

Sale history for 100 Underhill Rd

Year

Property tax

Land + Additions

Assessment*

2025

$24,360 (+3.3%)

$1,218,657 + $664,722

$1,883,379

2024

$23,590 (+1.6%)

$1,194,765 + $651,690

$1,846,455

2023

$23,215 (+4.4%)

$1,171,343 + $638,914

$1,810,257

2022

$22,239 (−0.2%)

$1,148,383 + $626,391

$1,774,774

2021

$22,275 (+0.7%)

$1,125,869 + $614,110

$1,739,979

2020

$22,121 (+5.6%)

$1,103,800 + $602,073

$1,705,873

2019

$20,939 (−1.1%)

$1,092,489 + $595,903

$1,688,392

2018

$21,178 (+4.6%)

$1,071,072 + $584,221

$1,655,293

2017

$20,238 (+4.2%)

$1,029,492 + $561,541

$1,591,033

2016

$19,419 (−0.2%)

$1,029,492 + $561,541

$1,591,033

2015

$19,467 (+0.2%)

$1,009,313 + $550,534

$1,559,847

2014

$19,429 (+3.8%)

$974,688 + $531,648

$1,506,336

2013

$18,720 (+0.9%)

$974,688 + $531,648

$1,506,336

2012

$18,552 (+4.7%)

$970,290 + $529,249

$1,499,539

2011

$17,727 (+2.2%)

$951,266 + $518,872

$1,470,138

2010

$17,350 (+1.7%)

$932,621 + $508,702

$1,441,323

2009

$17,055 (+4.6%)

$925,658 + $504,904

$1,430,562

2008

$16,308

$927,861 + $506,106

$1,433,967

Tax history for 100 Underhill Rd

Year

Property tax

Land + Additions

Assessment*

2025

$24,360 (+3.3%)

$1,218,657 + $664,722

$1,883,379

2024

$23,590 (+1.6%)

$1,194,765 + $651,690

$1,846,455

2023

$23,215 (+4.4%)

$1,171,343 + $638,914

$1,810,257

2022

$22,239 (−0.2%)

$1,148,383 + $626,391

$1,774,774

2021

$22,275 (+0.7%)

$1,125,869 + $614,110

$1,739,979

2020

$22,121 (+5.6%)

$1,103,800 + $602,073

$1,705,873

2019

$20,939 (−1.1%)

$1,092,489 + $595,903

$1,688,392

2018

$21,178 (+4.6%)

$1,071,072 + $584,221

$1,655,293

2017

$20,238 (+4.2%)

$1,029,492 + $561,541

$1,591,033

2016

$19,419 (−0.2%)

$1,029,492 + $561,541

$1,591,033

2015

$19,467 (+0.2%)

$1,009,313 + $550,534

$1,559,847

2014

$19,429 (+3.8%)

$974,688 + $531,648

$1,506,336

2013

$18,720 (+0.9%)

$974,688 + $531,648

$1,506,336

2012

$18,552 (+4.7%)

$970,290 + $529,249

$1,499,539

2011

$17,727 (+2.2%)

$951,266 + $518,872

$1,470,138

2010

$17,350 (+1.7%)

$932,621 + $508,702

$1,441,323

2009

$17,055 (+4.6%)

$925,658 + $504,904

$1,430,562

2008

$16,308

$927,861 + $506,106

$1,433,967

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

Zoning and permits

Zoning
Permits

R-P

Planned Residential District

The purpose of this chapter is to effect the development of attractive residential properties in keeping with the character of the community with minimum disturbance to the quality of the neighborhoods and of the natural features of the landscape by requiring the approval of specific plans showing site design and overall design character prior to development.; In establishing R-P districts, the City of Mill Valley intends to make possible development in which the size and shape of buildings, building heights, and the open spaces surrounding buildings or groups of buildings may be varied. Density shall be set at a level or range of dwelling units which is consistent with limitations imposed by on-site, natural resource, topographic and geologic conditions and by the level of public services and road access that can be reasonably provided. The development approval process for R-P districts is intended to allow for continuous refinement of the permitted density as additional information is acquired regarding the capacity of the land.

Permitted uses

Include but are not limited to:

Agriculture
Housing-Single unit

Oct 29, 2025 • Final

Encroachment online

Install underground electrical components including a transformer, cable, and conduit within a utility trench.

Electrical

Grading

Oct 14, 2022 • Final

Residential comp shingle re roof

Remove and replace the roof on a residential building with composition shingles. No resheeting is included.

Roofing

Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.

Property details

Interior

Heating & Cooling
Heating Type: Central

Fireplace Information
# of Fireplaces: 2
Has Fireplace

Exterior

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

Property Information
Subdivision Name: SCOTT VLY MDWS
Living Sq. Ft: 2,366
Building Sq. Ft: 2,366
# of Units: 1
Legal Description: LOT 4

Parking & Garage Information
Garage/Parking Sq. Ft: 528

Lot Information
# of Buildings: 1
Land Sq. Ft: 10,220
Legal Lot Number: 4
Municipality Name: MILL VALLEY
Acres: 0.2346
County Use Description: 1 FAMILY RESID

Financial

Assessor Information
Assessment Year: 2026
Tax Area: MILL VALLEY

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,366
Stories: —
Lot Size: 10,220 square feet
Style: Single Family Residential
Year Built: 1986
Year Renovated: 1986
County: Marin County
APN: 033-220-04

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 • 1.2mi

9/10

Tamalpais High School

Public 9-12 • Assigned • 1.7mi

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

3/10 Fire Factor

0.15% chance of being in a wildfire in next 30 years

3/10 Heat Factor

7 days above 83° expected this year, 17 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

$2.71M – $3.28M

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OPEN TODAY, 2PM TO 4PM3D WALKTHROUGH

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OPEN TODAY, 1PM TO 4PM3D WALKTHROUGH

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OPEN SUN, 1PM TO 4PM

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eXp Realty of California Inc.

Home values near 100 Underhill Rd

Data from public records.

Address	Redfin Estimate
135 Underhill Road, Mill Valley, CA 4 Beds \| 5 Baths \| 4548 Sq. Ft.	$4,507,500
120 Underhill Road, Mill Valley, CA 4 Beds \| 3 Baths \| 2384 Sq. Ft.	$2,652,790

Address	Redfin Estimate
101 Underhill Road, Mill Valley, CA 4 Beds \| 5 Baths \| 4969 Sq. Ft.	$6,701,387
115 Underhill Road, Mill Valley, CA 5 Beds \| 4.5 Baths \| 6102 Sq. Ft.	$6,408,851

Address	Redfin Estimate
104 Underhill Road, Mill Valley, CA 3 Beds \| 3 Baths \| 2634 Sq. Ft.	$3,370,295
119 Underhill Road, Mill Valley, CA 3 Beds \| 3 Baths \| 3133 Sq. Ft.	$2,899,520

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 94941, CA

Sale history for 100 Underhill Rd

Tax history for 100 Underhill Rd

Zoning and permits

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94941

Home values near 100 Underhill Rd

More real estate resources