"I had an urgent request to get a permit across the line and Pedro was on his A-game and helped me within hours. Very professional, well documented, etc. Other structural engineers I hired only gave me headaches. I'd use Pedro again any day. Thank you very much, and glad to be in business with you!"

"Jeremy was great to work with and very detailed and professional with his review of my homeâ s structure as well as the report he provided. Based on his findings I did have work done on my 62 year old home foundation to hopefully insure I get another 62. Thank you Jeremy!"

"Mr. Castillo-Navia fulfilled all items in our wish list and designed a practical and beautiful home for our family! I hope this is our forever home but my wife and I would definitely look him up again if we need a different house when we eventually become empty nesters. He is professional and detail-oriented. CASNA Design even covered the structural engineering process. He answered immediately, is knowledgeable and passionate about his work, transparent in pricing, answered all of our questions and is very punctual. Mr. Castillo-Navia took the time to listen to what we wanted and made sure to incorporate that into our designs. We had the best experience. He was friendly, professional and we love the design he came up with. From the initial meeting to the final meeting everything went smoothly. He is very knowledgeable and a great listener. He also made himself available for follow-up questions from potential contractors and helped us compare bids. Working with CASNA Design was money well spent and we highly recommend him."

"Alaa was very understanding with what we wanted and had it finished in 24 hrs. I believable but very true. Very polite and honest. I was a little skeptical of sending money while meeting in person but we had a deadline that we had to meet and took the chance. We glad we did. Very very fantastic drawings elevation of our future custom home. Thank you so much Alaa!"

"Damon Howard inspected the foundation of home we were contracted to buy, he found structural errors and listed them on the report. Very thorough and clear report! Took time to explain issues and recommended companies for repairs and then returned to make sure the were fixed correctly."

"Tim was very professional, he was prompt in responding to messages. He showed up on the time for structural inspection and did thorough inspection. I highly recommend him considering my earlier experiences with other structural engineers, how they carry out their inspections and never give any definitive answers."

I am a licensed Professional Engineer providing structural engineering services for residential and small commercial projects. I work with homeowners, contractors, and design professionals to help move projects through the permit process by providing structural calculations, drawings, evaluations, and engineering letters as needed.\n\nIn-person structural inspections are available in Maryland, DC, and Northern Virginia. Remote structural consulting is available in Delaware and North Carolina.\n\nTypical projects include load-bearing wall removal, beam and header sizing, additions, decks, foundation concerns, and framing evaluations. My goal is to provide practical, code-compliant structural solutions that are clear, efficient, and tailored to the project.

"I hired them to create plans for an apartment building. The process was quick and painless. Cost was good. The plans are full complete abd ready to take to builders for quotes. I will definitly use them again."

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"Joe Calvo was terrific. He was professional, knowledgeable, thorough and very patient in answering my myriad of questions. He promised a written report witin a week of his inhome visit but I actually received it the very next afternoon. Should the need for a structural engineer ever arises in the future this is the only call I'll make. I highly recommend this company!"