Sold | 441 Tamalpais Avenue, Mill Valley

Seller Representation|5 Bedrooms + 4.5 Baths


441 Tamalpais Avenue

Mill Valley




Neighborhood Middle Ridge
Square Footage ~4,012 sq ft
Description 5 Bedrooms + 4.5 Baths


  • Newly constructed*, award-winning residence
  • Three levels of awe-inspired living with sweeping views
  • Clean, modern lines designed by award-winning architects
  • Indoor / outdoor living at its finest, including decks & spa
  • Sustainable & energy efficient with smart-home capability
  • Maintenance free exterior with surfaces that patina over time
  • Flexible, spatially dynamic floor plan with great natural light


Welcome to 441 Tamalpais Avenue in sunny Mill Valley, a newly-constructed* sustainable smart home!

The goals for this project were multi-faceted and ambitious— design a new, 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 an 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 SFGate's 'On the Block' - Mill Valley Extreme Makeover: Before and After 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

Architect/Builder 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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