MacRostie Historic Advisors LLC was founded in 2004 by nationally-recognized historic tax credit advisor Bill MacRostie. With the addition of partners Allen Johnson and Albert Rex in 2014, MHA has become the trusted historic tax credit partner for real estate developers and investors of historic buildings around the country.

Our growing team of historic preservation experts meet the Secretary of the Interior's Professional Qualification Standards with several team members having professional experience in both the private, non-profit, and public sectors. We understand historic resources and the regulatory process and maintain strong working relationships with review staffs at the National Park Service and the State Historic Preservation Offices.

Our team’s reputation for practical strategies, a focused work effort, and proven results in achieving results for our clients has made MHA an industry leader nationwide.




William "Bill" MacRostie

Senior Partner

In private practice for more than 30 years, Bill has advised clients nationwide on projects ranging in size and type from the multi-phased $175 million mixed-use Stroh’s Riverplace project in Detroit, Michigan to a $1.5 million hotel rehabilitation in Santa Rosa, California. He has represented clients in over two dozen tax certification administrative appeals in Washington, DC. For the 14 years that NPS certification project review was conducted in regional offices, Bill worked extensively in every regional office and most major states around the country.



Allen F. Johnson

Director, Chicago

Allen has over thirty years of professional experience in historic preservation planning and consulting, with special expertise in state and federal historic tax credit certification for large commercial projects. In private practice since 1989, Allen has managed hundreds of successful tax credit applications for a wide range of historic rehabilitation projects, including railroad stations, mill buildings, former military complexes, institutional campuses, schools, commercial blocks, and hotels.




Albert Rex


During his career, Albert has focused on the economic impact of historic rehabilitation. He was one of four authors of the original legislation that created the Massachusetts Historic Rehabilitation Tax Credit (MAHRTC) and has consulted on that matter as a technical advisor to Preservation Massachusetts, Inc., the statewide non-profit advocacy organization. He has also actively worked with other states in regards to their state tax credit programs. In addition to administrative duties, Albert provides clients with a unique understanding of the different state tax credit programs, especially in New England, and helps clients think through ways to maximize these programs in their projects.




Brian J. Monbouquette


Brian has been working with MHA as its CFO since 2011 and became its COO in 2017. Brian spent more than 30 years practicing as a CPA, originally as a partner with Price Waterhouse and later with two regional accounting firms. In the interim, he has acted as a fractional CFO, and financial and tax advisor, to a variety of early stage and middle market companies. Brian is closely involved in all aspects of strategic, operational, and financial management for MHA.