Get matched with top structural engineers in Washington, NH

"Dennis was very helpful in the designing of our retirement home. He was welcome to revisions and clarifications at a very reasonable price. I would highly recommend him to anyone seeking design of a single-family home."

"Evolution design worked with me on designing and addition for a 100 and 5 year old house. We worked on the dimensions of the addition Plus the materials. Evolution understood the local zoning which was amazing that they knew that. We have not started construction. And evolution can help pull the permits and I'm considering them for that as well. All in all it was a long project but it was done efficiently, working with several of the staff an the departments."

We’re a family owned and operated company that values honesty and integrity, and stands behind our work. We offer over 40 years of industry experience. We specialize in Asphalt Shingle Roofing installation, replacement, and repairs. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We look forward to building long-term relationships with our clients and guarantee your satisfaction!

"Fantastic work. Jheimy and his crew are methodical, clean, timely and precise as they tackled some interesting carpentry projects through the house including framing and installing a two side fireplace, matching existing trim and framing and installing multiple doors. Hire with confidence!"

"He did a good job, when you need him to do something else he does it for you."

"I was really under the gun due to a prior Architectural firm not performing their duties per building plan codes. Not only were the plans incomplete but the City Plan Reviewer states(The Worst plans he’s ever seen) they will not make adjustments unless there is an additional charge for Thousands. Evaluation’s saved my clients and drew our project per code, along with Engineering in less time then they quoted. I highly recommended them, Especially Kirsten. You went above and beyond trying to coordinate this project. The staff was very professional and I will use them on all my projects. Sincerely, Frank B BCM Builders"

"Andrew was knowledgeable and fun to work with."

"He's flexible and reasonable. A solid company that I've been using for a long time and will use again and again."

We are a design/build company with an emphasis on quality. This is where you see what it all comes down to ... producing a quality home that the client is happy with. \n\nWhether you want a 1200 square foot vacation cottage or a 3500 square foot show home, we can help you achieve your goals. We are using the most up-to-date resources on the market at reasonable prices. Quality crafts people are on the job and take pride in their work.\n\n.

We are a multidisciplinary firm providing architectural design, structural engineering, and full building construction services under one roof. From concept to completion, we deliver safe, code-compliant, and cost-effective solutions for residential and commercial projects.\n\nOur team combines design creativity with engineering precision to ensure every project is not only visually appealing but structurally sound and built to last. We handle permitting, construction documents, structural analysis, and on-site execution — giving our clients a smooth, stress-free building experience.\n\nOur Services Include:\n\n• Architectural design & permit drawings\n• Structural design & engineering calculations\n• Residential & commercial construction\n• Renovations, additions & new builds\n• Code compliance & inspection coordination\n• Project management from start to finish\n\nWe pride ourselves on quality workmanship, technical accuracy, and reliable delivery — turning ideas into durable, functional spaces.