SIEGAL / TUOMAALA ASSOCIATES, ARCHITECTS AND PLANNERS, INC. was established in 1966, the successor firm to LEONARD G. SIEGAL ASSOCIATES, originally founded in 1954.

We have assembled a creative, experienced and diverse team of architects, planners and support staff capable of executing a wide range of new and renovation projects.

We have developed a knowledgeable management team with proven entrepreneurial experience which is reflected in our VALUE ADDED approach to each project.

We are a small business with large capabilities.


We approach each and every commission with talent, enthusiasm and teamwork.

Every project is performed with a principal in direct charge, who will be with you throughout all phases of the work, and will assure that our services are personal, comprehensive and thoroughly coordinated.

We draw from a roster of professional consulting engineers and other specialists selected to provide the best qualified team for your project.


We understand that when a client, a community official or a contractor has an inquiry, it is essential that our response be prompt and thorough. We believe responsiveness to be fundamental to effective professional performance and building continuing relationships.