441 Tamalpais Avenue
441 Tamalpais Avenue
441 Tamalpais Avenue
441 Tamalpais Avenue
441 Tamalpais Avenue
441 Tamalpais Avenue
441 Tamalpais Avenue

441 Tamalpais Avenue

5 Beds 4.5 Baths 4,012 Sq.Ft.


Welcome to 441 Tamalpais Avenue in sunny Mill Valley, a recently-built sustainable smart home!

The goals for this project were multi-faceted and ambitious— design a modern, sustainable, and energy-efficient home that had the highest level of craft and attention to detail. The floor plan is open and spacious, providing function and flexibility, three of the five bedrooms are designed with flexible use in mind— they can be master bedrooms, an in-law unit, home office or family room. The house can be easily adapted to the needs of the owner, and it can change in time as the family grows and matures and needs change.

Special attention was paid to energy efficiency starting with the 10Kw solar PV system, which provides the energy for the 300% efficient mini-split heat pump heating and air conditioning. The house has an abundance of large windows, minimizing the need for lighting, which is 100% LED or high efficacy. Where possible materials were sourced to be reclaimed or made form recycled content. Indoor life quality is enhanced by the natural light, access to the exterior form every room and attention to indoor air quality.

The house was designed to be virtually maintenance-free with pre-finished or naturally weathering materials.

The architect/builder team were focused on providing the highest quality construction, with obsessive attention to refining every detail, expressing the natural characteristics of materials and refining the sense of craft and quality in even the smallest details.

441 Tamalpais was designed and built as if we were going to live here. We considered the plan, details and materials we want in our house, and which we hope will adapt well to your house.

The location is five minutes from downtown, yet secluded, private and serene, close to hiking trails and the end of the road, so low traffic flow.

5 bedrooms, 4½ bathrooms, family room, open plan living/dining/kitchen

Interior: Approximately 4,012 square feet
Garage: Approximately 476 square feet
Decks: Approximately 2,875 square feet

In the Press / Accolades & Awards

7x7 - An Architectural Stunner Atop Mount Tamalpais
Dexigner - 441 Tamalpais Avenue by Zack de Vito
Arch Daily - Tamalpais Residence / Zack de Vito Architecture + Construction
Design Milk - A California Home Built to be Sustainable & Energy Efficient
California Home+Design's 'Open House Obsession' - In Mill Valley, A Stunning Modern Tree House, $5M
Contemporist - This New Home Lives on a Steep Hillside Just Outside of San Francisco
CurbedSF - Ultra Contemporary Mill Valley Home Starts at $5.3M

Amenities & Details

95% New Construction
Infrastructure & Systems
Upgraded existing foundation and 40% new foundation
Full seismic upgrade to current code
95% new framing
New modified bitumen roof
All new plumbing and electrical systems with copper water pipes and cast iron sewer pipes
New electric high efficiency, multi-unit, zoned heat pump heating and air conditioning system
Fully wired (CAT6) for data and audio/visual
New 75 gallon high efficiency gas water heater
New fire sprinkler system throughout
All new insulation, exceeding minimum California energy requirements
All new thermally broken, dual pane Bonelli doors and windows
New energy efficient six-person spa

All new interior and exterior finishes and trim

Exterior Finishes

95% maintenance free exterior materials
Custom Corten steel rain screen siding
Integral color acrylic and cement stucco
Maintenance free translucent Acrylic decks
Maintenance free Bamboo decking
Custom stairs, railings and awnings of unfinished, cedar and redwood
Custom entry door

Interior Finishes

Custom cabinets with eco friendly Shinokki pre-finished oak and walnut veneer panels
Custom Corian sink/counters in all baths and laundry
Walk-in linen closet with custom shelving
Custom steel and acrylic stairs and steel shelving
Custom two-story book shelves and library ladder
Gas fireplace with custom hearth and surround
Built in custom mill work in virtually every room
Custom climate controlled wine cellar & wine refer on main level
New Bosch, Thermador and Viking appliances
Custom double stainless steel sink and second prep sink with ISE disposals
InstaHot water filter and dispenser
Hansgrohe, Toto, Kohler and other plumbing fixtures
98% LED lighting throughout
Custom quartz and steel and wood counters
Closets fully appointed
New drywall throughout with level 5 finish

Energy & Sustainability

New 10Kw Solar Photovoltaic system, owned, not leased
300% efficient HVAC heat pump system
Whole house, 24/7 automatic Heat Recovery Ventilation System (HRV)
All new thermally broken Bonelli doors and windows
Bamboo decking with high recycled content
Wired for electric vehicle charging
Hardwood floors throughout to increase air quality
All no VOC or low VOC paints and finishes
Toto dual flush toilets
Laundry to landscape water diverter (use biodegradable detergent)
Electric mat radiant heat in main bathrooms
Remote controlled operable skylight to increase ventilation and air circulation
Drought tolerant landscaping with drip irrigation

Automation & Audio Visual

  • House is fully wired for data (CAT6) and AV, speaker locations in all major rooms, wired for surround sound in three locations.
  • Control4 home automation system, controls a multitude of activities. Fully set up on the living level, easily expanded for whole house control. Wall control pads on two floors, can be controlled from smart phones and tablets with a free app. Control4 is an easily expandable system that allows for integration with outer systems for complete home automation.
  • Video entry intercom integrated into Control4
  • Wired for security cameras at key locations integrated into Control4 with remote viewing capability
  • Nest thermostats and smoke detectors integrated into Control4
  • Control4 capability:
    Remote access for real time video
    Remote access for heating and cooling
    Whole house lighting and alarm control
    Entry door access from phone or tablet
    HVAC optimization


Jim Zack, Lise de Vito and Bruce Wickstrom

Zack/de Vito Architecture + Construction is a San Francisco based architecture and Design/Build company with a reputation for designing and building award winning homes of distinction. Recent projects and awards include:

Steel House 1 & 2, Noe Valley, San Francisco
Builder Magazine’s 2014 Builder’s Choice Grand Award

Laidley Street Residence, Glen Park, San Francisco
AIA East Bay 2010 Merit Award
AIA 2009 National Housing Award
AIA San Francisco 2009 Excellence in Architecture Award
Builder Magazine’s 2009 Builder’s Choice Merit Award

Super Duper Burger, Mill Valley

San Francisco AIA Home Tours Participant

Chattanooga Duplex
States Street Tandem
Laidley Street Residence
Bernal Heights Residence
SteelHouse 1 & 2

*Home is approximately 95% new construction.


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441 Tamalpais Avenue, Mill Valley, CA 94941


Sold - Off Market
Payton Stiewe

Payton Stiewe


Founding Member

Arrian Binnings

Arrian Binnings


Founding Member

Property Amenities

View additional property information below.
Total Bedrooms: 5
Area & Lot
Living area 4,012 Sq.Ft.
Year Built 1969
Status Sold - Off Market
Sales Price $4,800,000

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