Architectural Record
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Subscribe
  • Sign Out
  • My Account
Architectural Record
  • NEWS
    • Latest News
    • Awards
    • Interviews
    • Obituaries
    • Podcasts
      • Design:Ed Podcast
      • Sponsored Podcasts
  • OPINION
    • Book Reviews / Excerpts
    • Exhibition Reviews
    • Forum
  • EXCLUSIVES
    • Videos
    • Design Vanguard
    • Top 300 Firms
    • Sponsored Content
    • Sponsored eBooks
    • From the Archives
  • CONTINUING ED
    • Editorial Continuing Ed
    • CE Center
    • CE Academies
  • PROJECTS
    • Buildings By Type
    • Reuse & Renovation
    • Museums & Arts Centers
    • Colleges & Universities
    • Multifamily Housing
    • Interiors
    • Lighting
    • Kitchen & Bath
  • HOUSES
    • Record Houses
    • House of the Month
    • Featured Houses
  • PRODUCTS
    • Products by Category
    • Record Products of the Year
    • Latest Products
  • EVENTS
    • Dates & Events
    • Record on the Road
    • Innovation Conference
    • Sustainability in Practice
    • Women In Architecture
    • Webinars
    • Ad Excellence Awards
    • Submit an Event
  • CONNECT
    • Ask RECORD AI
    • Newsletters
    • Contact
    • Advertise
    • Editorial Calendar
    • Store
    • Customer Service
  • SUBMIT
    • Submission Guidelines
    • RECORD Competitions
  • MAGAZINE
    • Subscribe
    • My Account
    • Digital Edition
    • Current Issue
    • Firm Pass
    • Historic Archive
Residential ArchitectureFeatured Houses

Mill Valley House

Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Photo © Iwan Baan
Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Photo © Iwan Baan
Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Photo © Iwan Baan
Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Photo © Iwan Baan
Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Photo © Iwan Baan
Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Image courtesy Koji Tsutsui & Associates
Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Image courtesy Koji Tsutsui & Associates
Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Image courtesy Koji Tsutsui & Associates
Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Image courtesy Koji Tsutsui & Associates
Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Image courtesy Koji Tsutsui & Associates
Mill Valley House
Mill Valley House
Koji Tsutsui & Associates
Mill Valley, California
Image courtesy Koji Tsutsui & Associates
Mill Valley House
Mill Valley House
Mill Valley House
Mill Valley House
Mill Valley House
Mill Valley House
Mill Valley House
Mill Valley House
Mill Valley House
Mill Valley House
Mill Valley House
November 15, 2013

Architects & Firms

Koji Tsutsui Architect & Associates

Mill Valley, California

Site Size: 8,210 square feet

Project Size: 1,487 square feet

Program: A family in Mill Valley, California had Japanese firm Koji Tsutsui & Associates design a structure that would function as both an office and a home so the family could spend more time together.

Solution: Since the property, situated at the edge of a steep, heavily wooded slope near a Bay Area national park, is replete with wildlife, Tsutsui wanted to minimize the building’s impact on the natural habitat. Tsutsui designed the house as a cluster of 10 wood-framed volumes lifted off the ground on stainless steel columns.

Visitors enter the house at the crest of the hill, where a path from a garage leads to the house. From here, the cascade of boxes follows the contour of the hill. Inside the interlocking volumes, an uninterrupted path fosters interaction between family members.

The upper level spaces include two bedrooms, a study, a kitchen and dining area, a living room, and access to a rooftop terrace. The lower level, also accessible by an entry at the south side, contains a foyer, a living area, and another bedroom. Interiors are minimal, with small sections of plywood steps leading to each separate cube space like a terrace.

Architect:
Koji Tsutsui & Associates
Address: 3-28-10-304 Kyodo Setagaya-Ku
Tokyo, 156-0052
Email: info@kt-aa.com

People

Owner:
Koji Tsutsui

Architect:
Koji Tsutsui & Associates
Address: 3-28-10-304 Kyodo Setagaya-Ku
Tokyo, 156-0052
Email: info@kt-aa.com

Personnel in architect's firm who should receive special credit:
Koji Tsutsui (Partner in Charge ' registered architect in Japan)
Satoshi Ohkami (Project Manager ' not registered architect)

Engineer(s):
Structural Engineer:
Jon Brody Structural Engineers

Civil Engineer:
AYS Engineering Group, Inc.

Consultant(s):
Title 24 Compliance:
Gabel Associates, LLC

Geotechnical Consultant:
Herzog Geotechnical

General contractor:
Radco & Associates, Inc.

Photographer:
Iwan Baan
(347)-525-1554

 

Products

Structural system
Concrete Foundation, Steel Piloti, Wood Framing.

Exterior cladding
Rainscreen:
Minerit HD (American Fiber Cement Corporation)

Moisture barrier:
WallShield (VaproShield)

Roofing
Built-up roofing:
Modified Bitumen Class 'A' Roof Assembly

Windows
Metal frame:
AlumaTherm, Inc.

Glazing
Glass:
Insulated Glazing

Doors
Entrances:
Wooden Doors

Interior finishes
Floor and wall tile:
Grade-A Plywood with white-wash stain finish

 
KEYWORDS: California

Share This Story

Looking for a reprint of this article?
From high-res PDFs to custom plaques, order your copy today!

Post a comment to this article

Report Abusive Comment

Subscription Center
  • Create an Account
  • Start a Subscription
  • Manage My Account
  • Sign Up for Newsletters
  • Visit Customer Service
  • Update Preferences

More Videos

Sponsored Content

Sponsored Content is a special paid section where industry companies provide high quality, objective, non-commercial content around topics of interest to the Architectural Record audience. All Sponsored Content is supplied by the advertising company and any opinions expressed in this article are those of the author and not necessarily reflect the views of Architectural Record or its parent company, BNP Media. Interested in participating in our Sponsored Content section? Contact your local rep!

close
  • cold storage facility
    Sponsored byCarlisle SynTec Systems

    How Architects Can Design More Continuous Cold Storage Envelopes

  • TAMLYN XtremeTrim Exterior Trim
    Sponsored byTamlyn

    Designing Cleaner Panel Facades: Why Exterior Trim Details Matter

  • Building with Vapor Barriers
    Sponsored byReef Industries, Inc.

    Vapor Barriers Help Control Moisture in Tighter Building Designs

DESIGN:ED Podcast
Listen to Architectural Record’s DESIGN:ED Podcast

Events

June 23, 2026

Enhancing Fire Resistance with Advanced PVC Solutions

Credits: 1 AIA LU/HSW; 1 AIBD P-CE; 0.1 ICC CEU; 1 IIBEC CEH

Evaluate advanced PVC solutions that improve fire resistance, support WUI compliance, and enhance resilience in residential and commercial building design.

June 25, 2026

Designing Glass Railing Systems that Enhance Aesthetics and Meet Code

Credits: 1 AIA LU/HSW; 1 AIBD P-CE; 0.1 ICC CEU

Upon course completion, participants will possess a deeper understanding of glass railings to help ensure that safety, aesthetic, and performance objectives are achieved.

View All Submit An Event

Products

2026 Architect's Square Foot Costbook

2026 Architect's Square Foot Costbook

See More Products

Popular Stories

SanDiegoAirport

Top 300 Architecture Firms of 2026

Lorcan O' Herilhy

California Architect Lorcan O’Herlihy Has Died, Age 66

Coronado Bridge

The Architect’s Guide to San Diego

CCA, Studio Gang

The Winners of the AIA’s 2026 Architecture Award Range from Collegiate Rowing Hubs to Housing for the Homeless

Dusk House

Design Vanguard 2026: ONO

Enhancing Fire Resistance with Advanced PVC Solutions - Free Webinar - June 23, 2026

Related Articles

  • Valley House

    Valley House by Baran Studio Architecture

    See More
  • Sun Valley House

    See More
  • House of the Month - Complex

    Spiegel Aihara Workshop Expands a 1930s Silicon Valley House into a Veritable Family Compound

    See More

Related Products

See More Products
  • Architectural Record - July 2025

    Architectural Record July 2025 Issue

  • biogenic.jpg

    Manual of Biogenic House Sections

See More Products
×

The latest news and information

#1 Source for Architectural Design, News and Products

SUBSCRIBE
  • RESOURCES
    • Advertise
    • Contact Us
    • Submit
    • Store
  • ACCOUNT CENTER
    • Create an Account
    • Start a Subscription
    • Manage My Account
    • Sign Up for Newsletters
    • Visit Customer Service
    • Update Preferences
  • PRIVACY
    • PRIVACY POLICY
    • TERMS & CONDITIONS
    • DO NOT SELL MY PERSONAL INFORMATION
    • PRIVACY REQUEST
    • ACCESSIBILITY
  • SERVICES
    • Marketing Services
    • Reprints
    • Market Research
    • List Rental
    • Survey/Respondent Access
  • STAY CONNECTED
    • Linkedin
    • Facebook
    • Instagram
    • YouTube
    • X (Twitter)

Copyright ©2026. All Rights Reserved BNP Media, Inc. and BNP Media II, LLC.

Design, CMS, Hosting & Web Development :: ePublishing