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O&G is one of the premier building construction firms in the Northeast. We excel in completing complex new construction and renovation projects in educational and healthcare settings. O&G provides comprehensive interior and exterior construction services for small, mid-size and unique projects backed by our vast team of skilled tradesman, equipment and construction experience.

O&G supplies hundreds of brands of mason products through our retail showrooms and mason stores located throughout Connecticut.
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O&G is one of the Northeast's leading providers of construction services and products. For over 90 years, O&G has completed some of the region's most challenging projects and established ourselves as a leader in our industry - and in the communities in which we live and work. Founded in 1923, O&G has developed an extensive knowledgebase of construction project experience spanning various conditions and environments.
O&G is one of the premier building construction firms in the Northeast. O&G offers a comprehensive portfolio of building services ranging from General Contracting and Construction Management services to value-added, owner-centric consulting services including Pre-Construction and Program Management.
O&G has completed some of the largest and most complex heavy civil construction projects throughout the region and the country. O&G is one of the largest Heavy Civil Construction firms in the Northeast. We have successfully completed some of the largest and most complex heavy civil construction projects throughout the region and the country.
O&G's Special Project Group provides construction services for small, mid-size and unique projects in Healthcare, Industrial Manufacturing and Commercial environments. O&G's Special Projects Group provides comprehensive interior and exterior construction services for small, mid-size and unique projects ranging from $5,000 to $5 million.
Reviews (7)
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Martin
Apr 13, 2022
Great company to work for especially if you're looking for a life long career.
Luci Mozz
Apr 01, 2021
Critical: Professionalism Extremely unprofessional. I do hope that their other services are far better than what I experienced from their "employee" on the phone.
Abyss
Apr 22, 2020
Employees are racist. Never again will I work with this company. Believe me, if I could give them no stars at all, I would.
Tom Hunter
Apr 10, 2019
Good company friendly people good to do business with verry knowable on all aspects of constriction
Alexander Rubin
Feb 19, 2018
I found this entire company to be unethical, difficult to work with and honestly just rude. Their insurance department really needs to learn how to operate better and treat people better. Will be reporting the BBB.
Matt Maxwell
Dec 18, 2017
I've worked with O&G a number of times and they have been easy to work with. On time, reliable delivery.
Barry R.
Jun 08, 2016
A great assortment of blocks and pavers. See Kyle he is very good at helping with designs and ordering!