We are excited to announce that we have been named Detroit's Best of the Best for Siding, Windows, and Roofing!

Thank you to all of our wonderful customers and community members who took the time to vote for us. We appreciate your support.

We pride ourselves on offering the highest quality of service and look forward to many more years of serving the community.
Contact us today to schedule your free roof or siding replacement estimate.
Testimonials From Our Satisfied Customers
"Fred, Mike, and their whole crew are wonderful to work with. Communication and Fred’s patience made my roof install a very pleasant one. Prices are always fair and appropriate for the job. I have had Grennan Construction work on two of my houses and have referred them to numerous people. You won’t be disappointed!!"
If you have any questions or would like to request a free quote on your roofing or siding replacement project, don't hesitate to contact us. We're always happy to help.

Sincerely,
Fred Grennan and the Grennan Construction Family