“In 2001 I worked with Jason for the first time which was a design/build house that ultimately delighted the clients in both the experience and the end result of the final product.  Since then I’ve worked with Jason and his associates on many design/build projects.  Every one resulted in a fulfilling experience and satisfied customers.  Building a house is a challenging process for all involved- client, architect and builder.  Jason and his team know on every level what it takes for the process to be creative in design without forgetting the nuts and bolts requirements for a healthy, energy efficient and problem free home.  I’ve worked with a lot of architects and designers over the 40+ years in this business and I can say that I’d place Jason at the top of my list.”

— Richard Jump, R.A. Jump Construction, Inc.


“The YMCA of Ithaca and Tompkins County has been making a positive impact on our community since its inception in 1886.  After a devastating fire ruined the original building in downtown Ithaca in 1979 we partnered with Tallman and Tallman Architects for the development of the existing YMCA on Graham Rd West in Lansing. Our association and the community have benefited from the creative results in the designs of Bob Tallman and Jason Demarest. Our latest accomplishment with Jason is our beautiful Health and Wellness Room . A spacious area for lectures, events, meetings and anniversaries. The space rounds out our Y to be a complete destination for members and program participant and community gatherings.”  

—  Frank Towner, CEO

“Our experience with Jason and his team was an all-around positive one.  Their willingness and skill at working directly with our builder, their creativity and aesthetic skills, their powerful CAD system and their ability to enhance our vision helped us build our dream home.  They designed us a gorgeous, energy efficient and functionally perfect house!”

– Michael & Debbie Kamarck

“Working with Jason Demarest was a real pleasure. We had needs for a highly specialized house and were immediately impressed with Jason’s responsiveness, enthusiasm, and creative ideas. We began with our own rough designs which he modified extensively based on our needs and suggestions. The house is very modern in style, and made mostly of concrete, glass, and steel, with insulated panels made-off site. The house is raised on steel pillars (no basement to avoid mold), it has whole-house air and water filtration systems, a radiant-heat concrete floor, and we avoided as many toxic chemicals from standard building materials as possible. Jason guided us through all of this, did massive amounts of research, and proposed alternatives that we readily adopted (and some we did not). We enjoyed our working sessions with him and the input of his staff. After almost seven years we are still extremely happy with our one-of-a-kind home.”

— James Cutting & Claudia Lazzaro

“JKDA was great to work with. We used Jason for a commercial project that triggered change of use. Jason navigated us through ADA, fire, health and electric codes without any delays to the project. He worked very well with all of the city agencies involved. The project finished in record time.

 — Tim Meder, Owner – The Westy, Ithaca, NY

“From our raw unique space you helped us create a home that perfectly suits us, both practically and aesthetically.  We feel fortunate to live  here.  We (and our family members and all of our guests) love our house!”

— Eileen Yagoda & Ross Brann

“We had a very positive  experience working with Jason and Ed to design and build our new home in  Ithaca.  Having been involved in the design and construction of two previous homes, we knew that having an architect who listened to us and was able to incorporate our ideas into the design was very important.  Jason not only did  that but also proposed interesting design possibilities many of which became part of the final product. Jason and Ed’s ongoing assistance throughout the construction process was very helpful in ensuring that their design was implemented properly and that issues which invariably arise during construction  were resolved quickly.  We are extremely pleased with our new home and it  has an Energy Star rating.

— Jeannie and Walt Cottrell