Colleen Mahoney

Colleen Mahoney

Don’t be intimidated by her impressive list of accomplishments and accolades. Colleen may be among the Bay Area’s most acclaimed residential architects, but she brings a refreshingly personal, comforting and inquisitive demeanor to every project. As a parent and a recognized advocate for sustainable building practices, Colleen has set a new standard for family-focused residential architecture with over 200 projects to date.

Passions & Interests:

“I guess I have a lust for life and a love for all that is beautiful here in the Bay Area. So, when I’m not at Mahoney Architects, you may find me taking a long walk on Stinson Beach, strolling through the redwoods at Samuel P. Taylor or cheering on the Giants! As a kid I worked on an active Sonoma County ranch and now I’m teaching my own kids to buy locally and seasonally. I also enjoy photographing their soccer games, teaching martial arts and taking arts classes. All of which helps inform my aesthetic and feel for what really works in designing homes for families.”


  • University of California, Berkeley – Bachelor of Arts in Architecture, College of Environmental Design
  • Arizona State University, Executive Master’s in Sustainability Leadership
  • Arizona State University, Master’s of Science in Biomimicry


  • Professional Woman of the Year 2011, National Association of Professional Women
  • Over 20 awards from the San Francisco chapter of the National Association of the Remodeling Industry
  • Remodel the Future award, Build It Green
  • Best of Houzz 2012, 2013,2014, 2015, 2016 & 2017


  • Bay Area Green Business
  • Build It Green

What Colleen’s Clients Say:

“For the complex and sometimes difficult dance between architect and client, it is good to have an architect who is a strong lead, yet able to follow. Colleen does both superbly . . . and she never stepped on our toes!”

– Ellen Reinheimer and Carl Whitaker

“Colleen quickly grasped what we wanted to accomplish and how it should look. Her attention to detail, concern for structural issues, staying in constant touch with the contractors, matched by her design taste has given us a master suite that we know is fabulous.”

– Abbi Klein Fox

 “Colleen and the team transformed our house into everything we wanted and more. People comment on how amazing the house looks on the inside and how seamless the addition is from the outside. Sometimes we just sit around and can’t believe we live here – we’re so in love with this house.”

– Susan and Michael Schoen