Osr Holding Company LLC DBA O'Hara'S Son Roofing Company LLC
REGISTEREDRoofing Contractors · Chicago, IL
Osr Holding Company LLC DBA O'Hara'S Son Roofing Company LLC is currently registered as a construction contractor with the State of Iowa under registration number C148251, last issued or renewed 2026-07-29 and current through 2027-09-11. Iowa registration confirms compliance with state labor law. It is not a license, and the State does not assess skill.
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This contractor is based in IL and holds an Iowa contractor registration, which is required to perform construction work in Iowa.
Osr Holding Company LLC DBA O'Hara'S Son Roofing Company LLC at a glance
- What they do
- Roofing Contractors State record
- Registered in
- Chicago, IL State record
- Business address
- 6437 N Avondale Ave, Chicago, IL 60631 Google Maps
- Hours posted
- Open Mon, Tue, Wed, Thu, Fri Google Maps
- Phone
- (847) 255-3600 State record
- Website
- oharasson.com Business website
- Check the registration
- No. C148251, current, verify with the State State record
State registration
- Registration number
- C148251
- Status
- Registered
- Issued / last renewed
- 2026-07-29
- Expires
- 2027-09-11
- Primary trade
- Roofing Contractors
- Owner of record
- Luke Coleman
- Issuing authority
- DIAL
Sourced from the Active Iowa Construction Contractor Registrations (Iowa Code ch. 91C), last updated 2026-09-14. Verify this registration with the State of Iowa. How to check a registration yourself.
About Osr Holding Company LLC DBA O'Hara'S Son Roofing Company LLC
From oharasson.com
O'Hara's Son Roofing (OSR) is a top U.S. commercial roofer focused on quality, safety, and clear, nationwide service.
- Emergency service
- Website:
- oharasson.com
- Facebook:
- facebook.com/Oharasson
- Instagram:
- instagram.com/oharasson
- LinkedIn:
- linkedin.com/company/2440000
Read from the business’s own website (oharasson.com). We have not verified it and this business has not claimed this listing. Is this your business? Claim it free to edit or remove anything here, or request a correction.
Osr Holding Company LLC DBA O'Hara'S Son Roofing Company LLC on Google
Google MapsExact match to state record
Business name and phone number match this contractor’s state registration. It confirms this Google listing is the same business; it is not owner verification, a license, insurance or an endorsement.
4.0 ★ (42 Google reviews) · Roofing Contractor
- Website listed on Google: oharasson.com
- Chicago, IL
- Business address on Google:
- 6437 N Avondale Ave, Chicago, IL 60631
- Phone:
- the number on file with the State matches this Google listing
Hours on Google
- Monday: 8:00 AM to 5:00 PM
- Tuesday: 8:00 AM to 5:00 PM
- Wednesday: 8:00 AM to 5:00 PM
- Thursday: 8:00 AM to 5:00 PM
- Friday: 8:00 AM to 5:00 PM
- Saturday: Closed
- Sunday: Closed
Google reviews
A selection supplied by Google, ordered by relevance. Reviews containing contact details or unsupported credential claims are omitted.
5 ★ · Jaime Simental · Sep 2024
Loaded here...great guys fast loading NP...no overnight parking.
View review on Google Maps5 ★ · Jim Karr · Sep 2020
The process of getting my roof replaced by O"Hara's Son Roofing Company was first class from beginning to end. The representative, Lucas, who first explored the job and then provided the estimate and oversaw the work was proactive in messaging with our condo building and was quick to respond to any questions as well. The workers were professional and seemed to be very detail oriented in getting our roof sealed up. The warrantee of 20 years on materials and 2 years on labor seemed reasonable. I feel good knowing that if there is a problem that O"Hara Son will be professional and responsive as they have been all along. I highly recommend O'Hara and Son.
View review on Google Maps5 ★ · Brittney Jones · Sep 2022
O’Hara’s Son Roofing has a great staff in the office and the field. I don’t know much about the roofing side of construction, but they made everything easy to understand and easy to get done. They took care of everything from ordering to equipment rentals to install to warranty. They offer a workmanship warranty, manufacturer’s warranty, and maintenance inspection plan to keep the quality of the roof intact. Nice working with them!
View review on Google Maps5 ★ · Full Breach 77 Gmail · Nov 2020
O'Hara's Son Roofing completed a tear off / new roof for our 3-flat Logan Square building last month. They were easy to work with, and responded to our every question with detail. The sales person Lucas even is available for immediate texting which is great. The workers took less than a week for a big job and were all nice and courteous. Competitive pricing as well, so I would recommend O'Hara's Son Roofing and would use them again.
View review on Google Maps5 ★ · Samantha Benn · Sep 2022
Very knowledgeable, extremely helpful and great customer service. Loved my entire experience and have already recommended them to my family and friends.
View review on Google Maps
From Google Maps, as of Sep 2026. We have not verified it and this business has not claimed this listing. Is this your business? Claim it free or request a correction.
What Osr Holding Company LLC DBA O'Hara'S Son Roofing Company LLC is registered to do
The State classifies Osr Holding Company LLC DBA O'Hara'S Son Roofing Company LLC as roofing contractors. That classification comes from the registration itself, not from us. It describes the work the business registered to perform, and it is not an assessment of skill or a limit on what they may quote for.
2026-07-29
registration last issued or renewed with the State
879
registered roofing contractors in Iowa, this business among them
Sources for this profile
- Registration: Active Iowa Construction Contractor Registrations, last updated 2026-09-14. Verify registration C148251
- About the business: read from its website, oharasson.com. Not written or confirmed by the business.
- Google details: Google Maps, as of Sep 15, 2026. Not verified by us.