A groundbreaking Net Zero certified compound just minutes from downtown Mill Valley, 2 Upper Alcatraz Place blends cutting-edge sustainability with stunning architecture and sweeping views from Mt. Tam to the San Francisco skyline. This estate features a 3,610 sq ft all-electric main residence and a 519 sq ft legal ADU with private entry, full kitchen, and terrace. Highlights include wide plank oak floors, floor-to-ceiling glass, Control4 smart home integration, a penthouse-level primary suite, 505 sq ft view terrace, and a rooftop lawn and integrated sound throughout. Solar-powered with battery back up, a home built for future-forward living, this is Mill Valley luxury reimagined.
Active under contract
Price cut: $755K (4/24)
$8,995,000
2 Upper Alcatraz Place, Mill Valley, CA 94941
5beds
4,260sqft
Single Family Residence
Built in 2021
0.3 Acres Lot
$8,596,600 Zestimate®
$2,112/sqft
$-- HOA
What's special
Full kitchenStunning architecturePenthouse-level primary suiteWide plank oak floorsIntegrated sound throughoutRooftop lawnFloor-to-ceiling glass
- 117 days |
- 2,150 |
- 80 |
Zillow last checked:
Listing updated:
Listed by:
Lisa Smith DRE #01927676 415-328-9752,
Serhant California, Inc. 415-466-8898,
Joshua Deitch DRE #01902477 415-572-5433,
Coldwell Banker Realty
Source: BAREIS,MLS#: 326016540
Originating MLS: Marin County
Originating MLS: Marin CountyFacts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 5
- Bathrooms: 6
- Full bathrooms: 5
- 1/2 bathrooms: 1
Primary bedroom
- Level: Upper
Bathroom
- Level: Main
Dining room
- Level: Main
Family room
- Level: Main
Kitchen
- Level: Main
Living room
- Level: Main
Heating
- Central
Cooling
- Central Air
Appliances
- Included: Washer/Dryer Stacked
Features
- Basement: None
- Number of fireplaces: 1
- Fireplace features: Other
Interior area
- Total structure area: 4,260
- Total interior livable area: 4,260 sqft
Property
Parking
- Total spaces: 3
- Parking features: Attached
- Attached garage spaces: 2
Features
- Stories: 3
Lot
- Size: 0.3 Acres
- Features: Dead End, Grass Artificial, Private
Details
- Parcel number: 02909301
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
- Attached to another structure: Yes
Condition
- Year built: 2021
Utilities & green energy
- Sewer: Public Sewer
- Water: Public
Green energy
- Energy generation: Solar
Community & HOA
HOA
- Has HOA: No
Location
- Region: Mill Valley
Financial & listing details
- Price per square foot: $2,112/sqft
- Tax assessed value: $3,960,941
- Annual tax amount: $49,760
- Date on market: 3/2/2026
Estimated market value
$8,596,600
$8.17M - $9.03M
$9,753/mo
Price history
| Date | Event | Price |
|---|---|---|
| 6/26/2026 | Pending sale | $8,995,000$2,112/sqft |
Source:  BAREIS #326016540 Report a problem | ||
| 6/26/2026 | Listing removed | $30,000$7/sqft |
Source: Zillow Rentals Report a problem | ||
| 5/29/2026 | Listed for rent | $30,000+3.4%$7/sqft |
Source: Zillow Rentals Report a problem | ||
| 4/24/2026 | Price change | $8,995,000-7.7%$2,112/sqft |
Source: BAREIS #326016540 Report a problem | ||
| 3/3/2026 | Listed for sale | $9,750,000$2,289/sqft |
Source: BAREIS #326016540 Report a problem | ||
| 11/26/2025 | Listing removed | $9,750,000$2,289/sqft |
Source:  Engel & Volkers #325072653 Report a problem | ||
| 11/15/2025 | Listing removed | $29,000$7/sqft |
Source: Zillow Rentals Report a problem | ||
| 10/30/2025 | Price change | $29,000-9.4%$7/sqft |
Source: Zillow Rentals Report a problem | ||
| 10/9/2025 | Listed for rent | $32,000$8/sqft |
Source: Zillow Rentals Report a problem | ||
| 8/12/2025 | Listed for sale | $9,750,000-4.9%$2,289/sqft |
Source: BAREIS #325072653 Report a problem | ||
| 7/4/2025 | Listing removed | $10,250,000$2,406/sqft |
Source: Engel & Volkers #325043660 Report a problem | ||
| 5/13/2025 | Listed for sale | $10,250,000+424.6%$2,406/sqft |
Source: BAREIS #325043660 Report a problem | ||
| 3/17/2017 | Sold | $1,954,000-2.3%$459/sqft |
Source: Public Record Report a problem | ||
| 2/3/2017 | Pending sale | $2,000,000$469/sqft |
Source: Paragon Real Estate Group #21700676 Report a problem | ||
| 1/24/2017 | Listed for sale | $2,000,000$469/sqft |
Source: Paragon Real Estate Group #21700676 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $49,760 +3.8% | $3,960,941 +2% |
| 2024 | $47,923 +1.7% | $3,883,301 +2% |
| 2023 | $47,107 +6.1% | $3,807,158 +2% |
| 2022 | $44,385 +163.3% | $3,732,510 +202.8% |
| 2021 | $16,857 +1% | $1,232,857 +1% |
| 2020 | $16,693 +5.9% | $1,220,221 +2% |
| 2019 | $15,759 -41.5% | $1,196,304 -39.8% |
| 2018 | $26,925 +397.3% | $1,988,848 +946.3% |
| 2017 | $5,414 +88.1% | $190,093 +2% |
| 2016 | $2,878 -15.6% | $186,366 +1.5% |
| 2015 | $3,411 +9.3% | $183,567 +2% |
| 2014 | $3,121 | $179,971 +0.5% |
| 2013 | -- | $179,158 +2% |
| 2012 | -- | $175,647 +2% |
| 2011 | -- | $172,203 +0.8% |
| 2010 | -- | $170,917 -0.2% |
| 2009 | -- | $171,324 +2% |
| 2008 | -- | $167,965 +2% |
| 2007 | -- | $164,671 +2% |
| 2006 | -- | $161,443 +2% |
| 2005 | -- | $158,278 +2% |
| 2004 | -- | $155,175 +1.9% |
| 2003 | -- | $152,333 +2% |
| 2002 | -- | $149,346 +2% |
| 2001 | -- | $146,419 |
Find assessor info on the county website
Monthly payment
Est. payment$--/mo
Payment breakdown
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HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
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Climate risks
Neighborhood: Blithedale Canyon
Nearby schools
GreatSchools rating
- 10/10Old Mill Elementary SchoolGrades: K-5Distance: 0.3 mi
- 9/10Mill Valley Middle SchoolGrades: 6-8Distance: 1.4 mi
- 10/10Tamalpais High SchoolGrades: 9-12Distance: 1.9 mi
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- California
- Marin County
- Mill Valley
- 94941
- Blithedale Canyon
- 2 Upper Alcatraz Place
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