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For over 40 years, Mammen Associates Architecture in Park City has created distinctive architecture not just in Park City but all around the country.  We offer both architectural and interior design service.  We pride ourselves in listening to the needs of our clients and create homes that fit the the client's needs, the site and the  community.   These homes have won awards but much more importantly, they have been places where families have grown and enjoyed each other and where friends gather. We help to preserve the natural beauty of the setting, capture all of the best views the site offers and create a place to experience the beauty of that setting.

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BILL MAMMEN, Founding Partner | BRET BULLOUGH, Principal & Architect | TYLER YOUNG, Principal & Interior Design


Bill was amazing to work with. He listened to exactly what I wanted, never pushed his own ideas, but provided excellent insight as to why he would do things a certain way. His whole process of designing our house was different than most architects. Instead of sitting down and immediately drawing he actually interviewed us, took notes and provided a written description of our house. It was a process that allowed me to figure out what I wanted but then know that Bill understood what we wanted. As he began drawing out our house he then referred to our written description, or program as he calls it, to make sure all elements of what we wanted was included. At times we would want to make changes to our plans and he would remind us that we would be changing our original program. It was nice to know that he was watching out for us so that we could then decide for sure how to proceed. As this being our first and last time building we were most concerned that we minimized making mistakes. We had heard of so many stories of people making mistakes or regrets as the house was being built. Bill has such an extensive history in the business that he was hands on with our builder and subs throughout the whole process. If there was something not done right he was right on it and had things changed. It was nice to have him be the “bad guy” for us. We live our house and feel that we could not have built such a nice house without him. Our builder had also commented how nice it was to work with Bill as he also helped to make his job easier. Between Bill and my builder they were able to work out how to do many things with our home that is very unique. Bill was our best hire. I would never build another house without him. He is well worth every penny we paid him.Read More

Mammen Architecture is a premier custom design architecture firm. William Mammen has an excellent attention to detail, creativity and an ability to bring his clients vision to fruition. 422 Ontario showcases a complex site dealing with historical preservation, site congestion, limited parking, accessibility, and difficult construction sequencing; the end result is a beautiful, elegant, and high end residence with amazing views and living space. As a structural engineer, I appreciate William’s technical knowledge coupled with his creativity and vision. I always recommend Mammen Architecture and look forward to the result of his creative vision collaborated with the desires, wants, and wishes of his clients.Read More

Talented, innovative and trustworthy describe core values of Bill and Kay Mammen. They listened to us and captured the home environment that we wanted to create with our new construction. With Bill and Kay's expertise, suggestions were made, yet always leaving the final decision to us. Together we created something that was beyond what we expected while being sensitive to cost. Bill's dedication to the detail and Kay's excellent style was a perfect combination. We couldn't be happier with the final result!Read More

We engaged Bill Mammen to design a modern energy-efficient home at 6,500 ft near Park City in Utah. Bill was very quick to grasp the style and look-and-feel of the home we wanted, and he incorporated all features from our very tight brief, while also satisfying the HOA Architectural Guidelines. Often in conjunction with the General Contractor, Bill organized and attended meetings and demonstrations with specialists in various fields of expertise. Although he helped with the selections of finishes, Bill was flexible enough to allow us to overrule him. A large part of the design and construction of our home occurred whilst we were overseas and in a totally different timezone, so email communication was imperative.Read More

This is our second custom home with Mammen Associates and we are extremely happy with the results. We love their overall and room by room requirements approach to design. Our new home works perfectly for the use cases we defined. They are very open to comments and feedback during the design process. We also appreciated the site visits and feedback to subcontractors during construction. We are very pleased with the attention to sustainable design features that improves the overall efficiency of the home.Read More