About Us

Trip McGrath

Harold “Trip” McGrath founded Compusult in 1983 and is a Lifetime Certified Professional Estimator (LCPE). Formerly Senior Estimator for ADP Fluor Daniel, he offers your projects construction industry experience stretching over three decades. He is experienced in producing estimates based on conceptual data to construction documents, and in performing bid and change order evaluations. Mr. McGrath has also held positions of construction foreman, journeyman, and construction project manager and brings this direct construction experience to your project.

Warren Witkowski

Warren Witkowski has over 30 years of experience in the construction industry in the position of project coordinator, project engineer, estimator and chief estimator. In his position as Senior Mechanical Estimator, Mr. Witkowski produces estimates through all phases of design, providing alternate systems evaluation and change request reconciliation. Mr. Witkowski holds a degree in architecture, which allows him to be sensitive to the project design objectives. 

Kevin Marschke


Over the past 30 years, Kevin Marschke has held the positions of construction estimator, project manager and designer – experience which gives him an excellent background in the construction industry. In his position as Senior Consulting Electrical Estimator, Mr. Marschke performs cost and schedule control duties for projects ranging from public schools to missile sites. In addition to estimating Kevin has performed facility reviews for most of the US Embassies in Africa. He has also provided temporary power design and supervision for many of the NFL Super Bowls and Summer and Winter Olympic venues since 1996.