101 Upper Alcatraz Pl, Mill Valley, CA 94941
OFF MARKET

101 Upper Alcatraz Pl
Mill Valley, CA 94941

Blithedale Canyon
  • 5 Beds
  • 3.5 Baths
  • 3,760 sqft (on 0.30 acres)

$3,924,800

Trulia Estimate
as of Aug 13, 2026
Est. Refi. Payment $23,534/mo*
Refinance Your Home

$3,924,800

Trulia Estimate
as of Aug 13, 2026
Est. Refi. Payment $23,534/mo*
Refinance Your Home
5 Beds
3.5 Baths
3,760 sqft
(on 0.30 acres)

Home Value

Trulia Estimate
$3.92M
Since last month
Decreased$16K (-0.4%)
Since last year
Increased$360K (+10.1%)
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 +50% in the last 10 years
MonthEstimated value
2026
August 2026$3.92M
July 2026$4.03M
June 2026$3.94M
May 2026$3.95M
April 2026$3.91M
March 2026$4.07M
February 2026$3.77M
January 2026$3.49M
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
2 Upper Alcatraz Pl, Mill Valley, CA
0.03
Single-Family Home
$9,000,000
07/17/26
5
6
4,260
12 Hillside Ave, Mill Valley, CA
0.14
Single-Family Home
$12,250,000
07/10/26
5
4
4,863
47 Coronet Avenue, Mill Valley, CA
0.20
Single-Family Home
$2,498,000
10/24/25
5
4
2,571
15 Tamalpais Avenue, Mill Valley, CA
0.14
Single-Family Home
$6,500,000
03/16/26
5
2.5
3,920
108 Eldridge Avenue, Mill Valley, CA
0.28
Single-Family Home
$3,150,000
04/14/26
5
2.5
2,703
87 Oakdale Avenue, Mill Valley, CA
0.38
Single-Family Home
$3,675,000
08/18/25
5
2.5
3,346
128 Tamalpais Avenue, Mill Valley, CA
0.23
Single-Family Home
$3,250,000
08/07/26
3
4
2,288
151 Tamalpais Avenue, Mill Valley, CA
0.28
Single-Family Home
$2,825,000
03/23/26
4
3
2,065
35 Bernard Street, Mill Valley, CA
0.16
Single-Family Home
$3,650,000
10/10/25
5
3.5
2,640
38 Helens Lane, Mill Valley, CA
0.51
Single-Family Home
$4,495,000
03/27/26
4
3.5
3,663

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
29 Lower Alcatraz Place, Mill Valley, CA 94941
0.04
$1,495,000
-
-
-
For Sale
19 Lower Alcatraz Place, Mill Valley, CA 94941
0.05
$2,475,100
3
2
1,572
Off Market
125 Summit Avenue, Mill Valley, CA 94941
0.07
-
5
3
2,978
Off Market
185 Summit Avenue, Mill Valley, CA 94941
0.05
$7,250,700
5
4.5
3,273
Off Market
119 Summit Avenue, Mill Valley, CA 94941
0.08
$2,926,700
4
3
2,815
Off Market
63 Corte Madera Avenue, Mill Valley, CA 94941
0.08
$1,895,600
3
3
1,947
Off Market
116 Corte Madera Avenue, Mill Valley, CA 94941
0.08
$1,837,400
2
2
1,220
Off Market
15 Tamalpais Avenue, Mill Valley, CA 94941
0.14
$6,500,000
5
2.5
3,920
Recently Sold
65 Summit Avenue, Mill Valley, CA 94941
0.15
$3,350,000
Studio
-
6,244
Recently Sold
28 Bernard Street, Mill Valley, CA 94941
0.15
$1,915,400
4
4
1,170
Off Market
4 Lovell Avenue, Mill Valley, CA 94941
0.14
$6,476,100
5
5.5
3,595
Off Market
80 Summit Avenue, Mill Valley, CA 94941
0.15
$3,301,000
4
3
2,046
Off Market

Local Information

  • Map ViewExplore the area around 101 Upper Alcatraz Pl.
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1929
Lot Size
0.3 acres
Living Area
3,760 sqft
Price/Sqft
$1,044
Parking
Garage

About this House

This single-family home is located at 101 Upper Alcatraz Pl, Mill Valley, CA. 101 Upper Alcatraz Pl is in the Blithedale Canyon neighborhood in Mill Valley, CA and in ZIP code 94941. This property has 5 bedrooms, 4 bathrooms and approximately 3,760 sqft of floor space. This property has a lot size of 0.30 acres and was built in 1929.
101 Upper Alcatraz Pl, Mill Valley, CA 94941 is a 5 bedroom, 4 bathroom, 3,760 sqft single-family home in Blithedale Canyon, built in 1929. It is currently off market. The Trulia Estimate is $3,924,800, with a rent estimate of $6,117/month.

Home Details for 101 Upper Alcatraz Pl

Interior Features

Interior Details
BasementNumber of Rooms: 8Types of Rooms: Walk In Closet, Dining Room, Family Room, Laundry Room, Master Bath, Solarium Atrium
Heating & Cooling
Heating: Forced Air, Other, GasAir ConditioningCooling System: SolarHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 3Floors: Tile, Carpet, Hardwood
Appliances & Utilities
Cable ReadyDishwasherDisposal
Fireplace & Spa
Fireplace
Security
Security System

Exterior Features

Exterior Home Features
Roof: CompositionDeckExterior: Shingle, StuccoGardenPatio
Parking & Garage
GarageParking Spaces: 2Parking: Garage Detached

Property Information

Year Built
Year Built: 1929Year Updated: 1959
Property Type / Style
Property Type: Single Family HomeArchitecture: Contemporary

Community

Units in Building: 1

Lot Information

Lot Area: 0.30 acres

Price and Tax history

YearProperty taxTax assessment
2025
$12,163
$725,118
Home facts updated by county records

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

Blithedale Canyon
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Blithedale Canyon

At least 20 Trulia users voted on each feature.

  • 96 % Say it's dog friendly

  • 91 % Say it's walkable to restaurants

  • 91 % Say car is needed

  • 90 % Say there's wildlife

  • 88 % Say it's walkable to grocery stores

  • 87 % Say people would walk alone at night

  • 86 % Say yards are well-kept

  • 79 % Say there's holiday spirit

  • 75 % Say it's quiet

  • 73 % Say parking is easy

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

  • 68 % Say there are community events

  • 65 % Say kids play outside

  • 64 % Say neighbors are friendly

  • 29 % Say streets are well-lit

  • 27 % Say there are sidewalks

Sourced by Trulia users. Learn more about our methodology.
  • Alex V.
    "No sidewalks. Not a lot of flat lots. Not many parks outside of old Mill. Streets are windy and not well lit. "
    0
    Flag
  • Gayle Delaney
    "Like most of my neighbors, I have lived in this sunny and magical home and town for many years (32) and am leaving only to live part-time in Italy and with family in Florida. The extraordinary Redwood forest beauty of our town and our ease of being active neighbors for all sorts of causes and activities is wonderful. Our easy access to hours and hours of local, state and national hiking rail systems is hard to believe since we are so close to San Francisco!"
    9
    Flag
  • Pat H.
    "Love being able to hike Mt Tam from my doorstep. Love the wine and food festival every June downtown mill valley. Best wines and restaurants showcase their best offerings."
    0
    Flag
  • Annestuartbricca
    "I have lived in Mill Valley for 3 years and also work for the City of Mill Valley. This is an amazing city to live, work and play in. The trails and open spaces near and on Mt. Tam make some of the most beautiful views in the world accessible by bike or foot. The community is rich in cultural arts and entertainment. I enjoy the quiet refuge of my home in the hills after a day in the bustling downtown area. The parks are pristine and the community center has an indoor pool, brand new gym, dance studio, large/elegant banquet hall and many meeting/classroom spaces that you can rent for affordable prices. While Mill Valley has a reputation for being “stuck up”, “snotty” and “entitled”, I have not experienced this. I do pay an arm and a leg to live here, but in my opinion it is worth every penny and I have never regretted my decision to move here. The Mill Valley City Council is very responsive to citizen ideas, complaints and suggestions, making residents feel as though they have a voice in building the future of MV. With close proximity to San Francisco and Napa, you are in a great spot to travel and get away when you want. I will rent here until I am ready to buy a home somewhere more affordable."
    0
    Flag

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Apartments for Rent

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Homes for sale near 101 Upper Alcatraz Pl

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Off Market Homes Near 101 Upper Alcatraz Pl

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Frequently asked questions about 101 Upper Alcatraz Pl

  • What is 101 Upper Alcatraz Pl estimated to be worth?
    Trulia's estimated value for 101 Upper Alcatraz Pl in Mill Valley, CA is $3,924,800.
  • 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.
  • What do residents say about the Blithedale Canyon neighborhood?
    Residents describe the Blithedale Canyon neighborhood in Mill Valley, CA as dog-friendly, walkable to restaurants, and walkable to grocery stores. See recently sold homes in Blithedale Canyon, Mill Valley.
  • Does 101 Upper Alcatraz Pl have air conditioning?
    Yes, 101 Upper Alcatraz Pl in Mill Valley, CA has air conditioning.
  • Does 101 Upper Alcatraz Pl have laundry facilities?
    Yes, 101 Upper Alcatraz Pl in Mill Valley, CA has laundry facilities.