About us

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O&L General Contractor Inc. was founded in 2000 by Oscar Lainez he didn’t simply just start a contractor’s company with no experience. He originally started out at the very bottom as a construction worker, who slowly worked his way up to a Roofer and then as a manager in contractor company. After several years of learning the trade, he opened his own company and named it after himself “Lainez Contractors”. Oscar and his team are focused more on quality and honesty than anything else. He always had a plan of quality work to be done can provide quality works at honest and reasonable prices.  

The company is fully licensed, insured and Bonded, we not only have a valid Contractor license on file with the City of Chicago and many surrounding suburbs, there is also a General Contractor license that the company holds over the years, the company has expanded from not just doing masonry work, we also provide services such as waterproofing, caulking, siding, windows and even roofing.

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Our Promise:

O&L General contractor promises to provide the highest quality work, using the finest materials. All of our roof replacements are backed by exceptional manufacture’s warranties. Adding to our manufacturer’s warranties, we provide you with. Our labor warranty is 10 years or more. This is our promise to you, so go ahead and give us a call for a free estimate.

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  JAS CONSTRUCTION AND ROOFING INC.  License #104017630