23 Walnut Ave, Mill Valley, CA 94941
OFF MARKET

23 Walnut Ave
Mill Valley, CA 94941

Sycamore/Tamalpais Park
  • 4 Beds
  • 4 Baths
  • 6,076 sqft

$11,804,500

Trulia Estimate
as of Aug 17, 2026
Est. Refi. Payment $70,385/mo*
Refinance Your Home

$11,804,500

Trulia Estimate
as of Aug 17, 2026
Est. Refi. Payment $70,385/mo*
Refinance Your Home
4 Beds
4 Baths
6,076 sqft

Home Value

Trulia Estimate
$11.8M
Since last month
Decreased$384K (-3.1%)
Since last year
Increased$8M (+243.1%)
Since last sale
Increased$10M (+661.6%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +532% in the last 10 years
MonthEstimated value
2026
August 2026$11.8M
July 2026$12.36M
June 2026$12.19M
May 2026$11.69M
April 2026$10.91M
March 2026$11.02M
February 2026$10.89M
January 2026$9.75M
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
357 - A Molino Avenue, Mill Valley, CA
0.30
Single-Family Home
$2,200,000
06/10/26
4
3.5
2,234
135 Marlin Ave, Mill Valley, CA
0.28
Single-Family Home
$1,333,500
05/01/26
4
3
2,268
54 Mountain View Avenue, Mill Valley, CA
0.20
Single-Family Home
$2,850,000
09/22/25
4
3
2,621
10 Avon Ave, Mill Valley, CA
0.31
Single-Family Home
$3,000,000
03/05/26
4
3.5
2,210
357 Molino Ave, Mill Valley, CA
0.27
Single-Family Home
$2,200,000
06/10/26
4
3
2,234
283 E Blithedale Avenue, Mill Valley, CA
0.09
Single-Family Home
$1,900,000
06/17/26
4
1.5
1,643
30 Walnut Avenue, Mill Valley, CA
0.04
Single-Family Home
$3,600,000
05/20/26
4
2
1,992
31 Alvarado Avenue, Mill Valley, CA
0.18
Single-Family Home
$3,855,000
04/28/26
4
3
2,574
35 Sycamore Ave, Mill Valley, CA
0.08
Single-Family Home
$5,625,000
02/13/26
4
4
3,716
18 Thalia St, Mill Valley, CA
0.10
Single-Family Home
$3,800,000
03/13/26
3
3
2,635

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
10 Catalpa Avenue #7, Mill Valley, CA 94941
0.04
$985,000
2
1
978
Recently Sold
34 Walnut Avenue, Mill Valley, CA 94941
0.03
$1,444,100
2
1
816
Off Market
30 Walnut Avenue, Mill Valley, CA 94941
0.04
$3,600,000
4
2
1,992
Recently Sold
1 Thalia Street, Mill Valley, CA 94941
0.07
$2,814,600
3
2.5
1,896
Off Market
45 Sycamore Avenue, Mill Valley, CA 94941
0.07
$6,452,600
4
2.5
2,984
Off Market
44 Catalpa Avenue, Mill Valley, CA 94941
0.09
$2,700,000
3
2
1,530
Recently Sold
283 E Blithedale Avenue, Mill Valley, CA 94941
0.09
$1,900,000
4
1.5
1,643
Recently Sold
70 Sycamore Avenue, Mill Valley, CA 94941
0.09
$2,918,500
3
3
2,524
Off Market
7 Manor Terrace, Mill Valley, CA 94941
0.11
$3,103,300
4
3.5
2,859
Off Market
50 Sycamore Avenue, Mill Valley, CA 94941
0.10
$3,543,800
3
2
2,078
Off Market
268 E Blithedale Avenue, Mill Valley, CA 94941
0.10
$3,020,100
4
3
2,565
Off Market
82 Walnut Avenue, Mill Valley, CA 94941
0.13
$6,008,600
4
4.5
3,265
Off Market

Local Information

  • Map ViewExplore the area around 23 Walnut Ave.
  • Schools5 Elementary Schools1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
2025
Living Area
6,076 sqft
Price/Sqft
$1,943
Parking
Garage

About this House

This single-family home is located at 23 Walnut Ave, Mill Valley, CA. 23 Walnut Ave is in the Sycamore/Tamalpais Park neighborhood in Mill Valley, CA and in ZIP code 94941. This property has 4 bedrooms, 4 bathrooms and approximately 6,076 sqft of floor space. This property has a lot size of 8537 sqft and was built in 2025.
23 Walnut Ave, Mill Valley, CA 94941 is a 4 bedroom, 4 bathroom, 6,076 sqft single-family home in Sycamore/Tamalpais Park, built in 2025. It last sold for $1,550,000 on Sep 24, 2004. It is currently off market. The Trulia Estimate is $11,804,500, with a rent estimate of $7,964/month.

Home Details for 23 Walnut Ave

Interior Features

Heating & Cooling
Heating: RadiantHeating Fuel: Radiant
Interior Details
Number of Rooms: 8
Fireplace & Spa
Fireplace

Property Information

Year Built
Year Built: 2025Year Updated: 1964
Property Type / Style
Property Type: Single Family HomeArchitecture: Contemporary

Exterior Features

Exterior Home Features
Deck
Parking & Garage
GarageParking: Garage

Community

Units in Building: 2

Lot Information

Lot Area: 8537 sqft

Price and Tax history

DateEventPrice
Sep 24, 2004
Source: N/A
Sold
$1,550,000

Market trends in Mill Valley

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$2.48M
$73.33KMoM
Sale-to-List Price
108.3%
Price per sq ft
$1.14K
$54MoM
Available listings
40
14MoM
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Around this home

View nearby schools on GreatSchools
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 Sycamore/Tamalpais Park

At least 15 Trulia users voted on each feature.

  • 100 % Say parking is easy

  • 100 % Say it's dog friendly

  • 96 % Say it's walkable to restaurants

  • 95 % Say there's wildlife

  • 95 % Say it's walkable to grocery stores

  • 94 % Say there are sidewalks

  • 88 % Say people would walk alone at night

  • 87 % Say kids play outside

  • 85 % Say car is needed

  • 78 % Say there's holiday spirit

  • 74 % Say yards are well-kept

  • 71 % Say they plan to stay for at least 5 years

  • 71 % Say neighbors are friendly

  • 58 % Say it's quiet

  • 48 % Say there are community events

  • 39 % Say streets are well-lit

Sourced by Trulia users. Learn more about our methodology.
  • G2m74vt2m2
    "Safe streets and the city workers are so good at keeping parks ,streets and the community center spotless. "
    0
    Flag
  • Em J. H.
    "Plenty of dog owners and parks and access to the bike path and dog park and hiking. Ssssssssssssssssss"
    2
    Flag
  • Esherpadotnet t.
    "Love this neighborhood! People are friendly, it's very quiet, very easy access to trails, and a super convenient location for commuting into the city. If only real estate prices would be more reasonable..."
    0
    Flag
  • dan m.
    "Love it here. We moved into the neighborhood a few months ago. Why am I still on Trulia? Doing some market research for work. I would say this is a fantastic family-oriented location. Unfortunately, inventory is super tight. Good luck in your search!"
    0
    Flag

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Apartments for Rent

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Homes for sale near 23 Walnut Ave

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Off Market Homes Near 23 Walnut Ave

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Frequently asked questions about 23 Walnut Ave

  • What is 23 Walnut Ave estimated to be worth?
    Trulia's estimated value for 23 Walnut Ave in Mill Valley, CA is $11,804,500.
  • What is the price history for 23 Walnut Ave?
    23 Walnut Ave in Mill Valley, CA last sold for $1,550,000 in September 2004.
  • Is Mill Valley a buyer's or seller's market?
    Mill Valley is currently a seller's market, based on recent for-sale activity.
  • What's the median sale price in Mill Valley?
    The median sale price in Mill Valley is $2.48M. That is up $73.33K from the prior month.
  • How big is the lot at 23 Walnut Ave?
    The lot at 23 Walnut Ave in Mill Valley, CA is about 0.20 acres (8,537 sq ft).
  • Does 23 Walnut Ave have a garage?
    Yes, 23 Walnut Ave in Mill Valley, CA has a garage.