The Results are in!
We are excited to announce that we have been named Detroit's Best of the Best for siding, roofing, and windows!
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.
As a family-owned and operated company servicing Oakland County and the surrounding areas, Grennan Construction has earned a reputation for honesty and integrity. Founded in 1998 by Fred and Phil Grennan, Grennan Construction takes great pride in providing what many people feel is the best customer service in the business. We will take the time to get to know you and what you want and need in a home improvement project – allowing us to offer the solution that is best suited for you. Call us today to schedule a free estimate with Grennan Construction, the leading Oakland County roofing contractor.
A MESSAGE FROM FRED, OUR OWNER:
It’s your future. Build it with the best. James Hardie makes the world’s highest-performance fiber cement siding, trim, backer board and more.
OUR ROOFING AND SIDING BLOG
At Grennan Construction we believe in providing consumers with the information, skills, and abilities needed to become more informed homeowners.
"Did a great job helping devise solutions for problems with a 98-year-old historic home. Carpentry & paint skills excellent! Good communicators. Always knew what to expect."
"I had a masonry job on my late 1920s home and Grennan Construction did an absolutely outstanding job. I would definitely use them again in the future!"
"I've used Grennan Construction for repairs and upgrades to my home and business. Fred and his crew have always done a great job at a reasonable price."
Since 1988 we have been serving our community by providing the best roofing and siding services in Oakland County. Today, sign up to receive monthly updates, home maintenance advice, and special deals available only through our email newsletter.
Field Technician Supervisor
Assistant Project Manager