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.

"Very satisfied with their work."

"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."

"Mr Tobin is a talented Architect and nicely agreed to help us with the design of our basement, despite his very busy schedule at the time. He was very pleasant to work with and he worked within our budget."

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HELLO! and welcome to Michael J. Cohalan Architect! I am your one stop shop for all things architectural services! I have over 50 years of experience, and customer service is always my top priority. I am also a member of the NCARB The National Council of Architectural Registration Board. So just give me a call today with your details for your free estimate.

"Arius is a life saver... literally. I had just purchased a new home and was having some renovations done. Simple as they may have seemed, it involved moving a door in the hallway a few feet. Had I not called Arius in for a review, the contractor I had hired (who was a great GC and very professional to deal with by the way) would have made a grave error which would have resulted in major structural integrity failure costing tens of thousands of dollars to repair. The Arius team was quick, responsive and one of the best experiences I had in dealing with contractors and engineers."

"Very successful remodel of rental condo unit with lots of positive feedback from management company and friends. Remodel was finished in timeframe promised and within agreed upon budget. Ray kept in close touch during the entire project and addressed all of our concerns promptly. Would highly recommend Ray and his team! They really go the 'extra mile' to ensure customer satisfaction."

"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"

"Did a great job. Very nice."