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MACMILLAN ASSOCIATES, INC. is a multi-disciplined engineering firm established in 1963 and is oriented toward providing personal attention to the needs of clients. Our services include planning and design for new buildings, renovating or remodeling of existing facilities, including structural, mechanical, electrical, product handling systems and LEED sustainable design services. Our experienced staff works closely with our clients, beginning with discussions on the scope of work and development of the schematic and preliminary sketches including cost estimates. Following approval of preliminary work, we prepare bidding and construction documents including drawings and specifications. We provide observation through the construction phase including review of shop drawings to insure that constructed work conforms to the intent of the contract documents.

  • A Principal or an Associate will have personal and direct knowledge of all projects.

  • Our staff is trained to provide prompt professional consulting and engineering design services on projects of all types and sizes.

  • We continue to demonstrate that our approach provides clients with reliable timely engineering services for reasonable fees.

The firm was established in 1963 as McClurg and MacMillan, Inc. The primary business of McClurg and MacMillan was structural engineering for architectural clients in the Great Lakes Bay Region. Demand necessitated the addition of industrial, mechanical and electrical engineering services. The firm name was later changed to MacMillan Associates, Inc. and projects expanded to the national level. MacMillan Associates currently employs a staff of 42. Of those, 31 are engineers (13 of which are licensed Professional Engineers); 7 designers/technicians; and 4 administrative staff members. Experience levels of our staff members range from entry level to over 50 years of experience. Our current average length of employment is over 15 years at MacMillan Associates.

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The MACMILLAN ASSOCIATES, INC. office building is shown below in the Midland Street Business District. The 1873 building built as the Sage Lumbermill offices along the bank of the Saginaw River was later converted to the employee general store of the Sage Lumbermill. 

1873 Sage Block - MacMillan Associates o
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