roofer · Pontiac, Oakland County
Grennan Construction
★ 4.8 254 Google reviews
Open 24 hoursWeekend hoursClaimed on Google254 reviews
Call (248) 694-8780WebsiteDirectionsSee the Pontiac list
Grennan Construction is a roofer in Pontiac, Michigan. Its TownAnswer score is 71 out of 100 (grade B), from 4.8 stars on 254 Google reviews. It ranks #2 of 7 roofers in Pontiac and #240 in Michigan. Address: 917 Orchard Lake Rd, Pontiac, MI 48341.
The 100-point TownAnswer score
100-point scoreEvery roofer in Michigan is checked on the same 5 parts. Nobody pays to change a score.
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Google star breakdown
Details
| Address | 917 Orchard Lake Rd, Pontiac, MI 48341 |
| Phone | (248) 694-8780 |
| Website | grennanconstruction.com |
| Google category | Roofing contractor |
| Extra categories | Construction company, Contractor, General contractor, Siding contractor, Window installation service |
| Photos on Google | 268 |
| Claimed on Google | Yes |
Hours
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| Thursday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
| Sunday | Open 24 hours |
Questions
Is Grennan Construction a good roofer?
Grennan Construction has a TownAnswer score of 71 out of 100, grade B, from 4.8 stars on 254 Google reviews. That ranks #2 of 7 roofers in Pontiac.
Where is Grennan Construction?
Grennan Construction is at 917 Orchard Lake Rd, Pontiac, MI 48341, in Oakland County.
What are Grennan Construction's hours?
Open 24 hours, 7 days a week.
How do I contact Grennan Construction?
Call (248) 694-8780 or visit grennanconstruction.com.
Nearby roofers
| Business | City | Distance | Score |
|---|---|---|---|
| Dependable Roofer LLC | Keego Harbor | 0.4 mi | 58 |
| Roof One | Pontiac | 0.5 mi | 70 |
| Guns&Hoses Roofing | Keego Harbor | 1.4 mi | 69 |
| Price Roofing Services | Pontiac | 1.7 mi | 59 |
| Performance Roofing and Siding Pontiac | Pontiac | 1.7 mi | 75 |
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Grennan Construction is in the top three in Pontiac. Owners can add this badge to their site.
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Ratings and review counts come from Google Maps, read October 2026. The score comes from TownAnswer's published method. A business cannot pay to change it.