Grennan Construction

Grennan Construction is a family-owned and operated Exterior Remodeling company based in Pontiac, MI, specializing in roofing and siding. They take a consultative approach to help homeowners understand the important details of making a successful construction investment. Homeowners consistently praise their attention to detail, responsiveness, and quality craftsmanship. They have successfully completed various projects, including residing houses in Hardie Board, building front porches, and replacing bay windows, even in challenging weather conditions. Customers appreciate the transparent quoting process, where all questions are answered fairly. The project managers are easy to contact and respond quickly to any concerns. Grennan Construction has earned high recommendations for their quick, quality work, including major roof repairs and small jobs like color matching trim. Their team is known for being professional, knowledgeable, and diligent, often working with homeowners to walk through projects honestly and openly. With a history of working on complex projects, such as a 123-year-old home with surprises under the shingles, they handle each task with care and thoroughness. Focused on education and collaboration, Grennan Construction provides peace of mind and satisfaction to their clients.