architecture + engineering + preservation At ALSA, our business is Buildings! We are the firm that knowledgeable building owners turn to in order to ensure that their buildings are performing to their highest capability and to maintain the value of their investment. We are recognized specialists in the renovation, restoration and preservation of our built environment. Our expertise includes architects and engineers and preservationists who know how to develop comprehensive solutions for both immediate and long range programs of upgrading, modernization and preservation. This includes all areas of buildings, including facades, masonry, ornamental items, windows, roofing and waterproofing, structural repairs, infrastructure and interior materials and finishes. Currently celebrating our 50th year of providing our clients with practical and sensitive solutions which keep their projects on time and budget. At the same time, we are recognized for our personal level of service based on our tenets of Excellence - Professionalism - Integrity.