Grennan Construction
Business hours
| Monday | 8:00am to 5:15pm |
| Tuesday | 8:00am to 5:15pm |
| Wednesday | 8:00am to 5:15pm |
| Thursday | 8:00am to 5:15pm |
| Friday | 8:00am to 5:15pm |
| Saturday | - |
| Sunday | - |
About us
Grennan Construction is a trusted, family-owned exterior remodeling contractor based in Pontiac, Michigan, proudly serving Oakland County and the surrounding areas. Specializing in residential roofing, siding, and gutters, we deliver high-quality craftsmanship with honest, customer-first service. Unlike typical contractors, we take a consultative, education-based approach — guiding homeowners through every step of the remodeling process, from the initial inspection and estimate to the final project walk-through. Our goal is to help you make confident, informed decisions and ensure your home improvement project is done the right way, the first time.
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