21 Underhill Rd, Mill Valley, CA 94941
OFF MARKET

21 Underhill Rd
Mill Valley, CA 94941

Scott Valley
  • 4 Beds
  • 2 Baths
  • 2,289 sqft (on 0.26 acres)

$3,487,100

Trulia Estimate
as of May 21, 2026
Est. Refi. Payment $20,790/mo*

$3,487,100

Trulia Estimate
as of May 21, 2026
Est. Refi. Payment $20,790/mo*
4 Beds
2 Baths
2,289 sqft
(on 0.26 acres)

Local Information

Map showing home location
© Google
-- mins to
Commute Destination

Description

This single-family home is located at 21 Underhill Rd, Mill Valley, CA. 21 Underhill Rd is in the Scott Valley neighborhood in Mill Valley, CA and in ZIP code 94941. This property has 4 bedrooms, 2 bathrooms and approximately 2,289 sqft of floor space. This property has a lot size of 0.26 acres and was built in 1962.
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources.

Home Highlights

Parking
Garage
Outdoor
Patio, Deck
A/C
Heating only
HOA
None
Price/Sqft
No Info
Listed
No Info

Home Details for 21 Underhill Rd

Interior Features

Heating & Cooling
Heating: OtherHeating Fuel: Other
Interior Details
Wet Bar
Appliances & Utilities
DishwasherDisposalDryerMicrowaveRefrigeratorWasher
Fireplace & Spa
Fireplace
Levels, Entrance, & Accessibility
Floors: Tile, Hardwood, Linoleum Vinyl

Exterior Features

Exterior Home Features
Roof: AsphaltDeckExterior: StuccoGardenPatioSprinkler System
Parking & Garage
GarageParking: Garage Attached

Property Information

Year Built
Year Built: 1962Year Updated: 1967
Property Type / Style
Property Type: Single Family HomeArchitecture: Contemporary

Community

Units in Building: 1

Lot Information

Lot Area: 0.26 acres

Price History for 21 Underhill Rd

DatePriceEventSource
10/13/2022$324,000Sold
N/A
05/20/2016$2,210,000Sold
BAREIS #21608418
04/19/2016$1,895,000Listed For SaleAgent Provided
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Property Tax and Assessment

Year2025
Tax$33,416
Assessment$2,610,212
Home facts updated by county records

Comparable Sales for 21 Underhill Rd

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
0.05
Single-Family Home
$2,550,000
04/20/26
4
2.5
2,515
0.08
Single-Family Home
$2,810,000
05/06/26
4
3
2,550
0.50
Single-Family Home
$507,500
03/03/26
4
3
2,311
0.03
Single-Family Home
$3,670,517
02/12/26
3
2.5
1,919
0.17
Single-Family Home
$2,910,000
04/24/26
3
2.5
2,875
0.27
Single-Family Home
$5,000,000
01/12/26
4
3
2,252
0.37
Single-Family Home
$2,950,000
09/26/25
4
3
3,035
0.40
Single-Family Home
$3,625,000
04/17/26
5
2
2,570
0.25
Single-Family Home
$4,805,000
05/11/26
4
3.5
3,234
0.41
Single-Family Home
$1,825,000
07/02/25
3
2
1,411

Assigned Schools

These are the assigned schools for 21 Underhill Rd.
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

Neighborhood stats provided by third party data sources.

What Locals Say about Scott Valley

At least 4 Trulia users voted on each feature.
  • 100 % Say it's dog friendly

  • 100 % Say there's holiday spirit

  • 100 % Say yards are well-kept

  • 100 % Say it's walkable to grocery stores

  • 100 % Say it's walkable to restaurants

  • 100 % Say parking is easy

  • 100 % Say kids play outside

  • 86 % Say there are community events

  • 83 % Say there are sidewalks

  • 80 % Say they plan to stay for at least 5 years

  • 80 % Say car is needed

  • 80 % Say it's quiet

  • 77 % Say neighbors are friendly

  • 75 % Say there's wildlife

  • 75 % Say people would walk alone at night

  • 50 % Say streets are well-lit

Sourced by Trulia users. Learn more about our methodology.
  • Michael
    "Many open space trail options for dogs (and their owners) including trails with amazing bay views and some that are off-leash."
  • Maryann P.
    "Lots of dogs and dog walkers. Most dogs on leash and walkers pick up poop. Lots of open space and coyotes in area so dogs shed not be let out unattended "
  • Maryann Pearson
    "Mill Valley is dog heaven Many walking paths and trails Most people control their dogs, and clean up after them"
  • Maryann P.
    "Driving into and out of Mill Valley downtown can be difficult during certain times of day. The Scott Valley neighborhood offers options for going north or south during heavy traffic and is closer to 101 than most neighborhoods. "
  • Maryann P.
    "I’ve lived here since 1985. beautiful natural surroundings on horse hill, quiet and very convenient location. our HOA owns 60+ acres of open space - horses graze part of it. Hike up Mt Tam from your doorstep Only 39 homes,very friendly neighborhood tho most also very private. All ages, some young kids. Scott Valley swim and tennis next door. Edna Mcguire elementary A few blocks away. We are so lucky to live here. "

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21 Underhill Rd, Mill Valley, CA 94941 is a 4 bedroom, 2 bathroom, 2,289 sqft single-family home built in 1962. 21 Underhill Rd is located in Scott Valley, Mill Valley. This property is not currently available for sale. 21 Underhill Rd was last sold on Oct 13, 2022 for $324,000. The current Trulia Estimate for 21 Underhill Rd is $3,487,100.