MJR SERVICES, INC MJR Services, Inc is an experienced General Contractor based in Montgomery County and serving all of SouthEast Texas. Our website will allow you to get familiar with the broad range of expert industrial, commercial, and residential construction services we provide. MJR Services, Inc is a privately held General Contracting enterprise serving Montgomery County and surrounding counties since 1998. Originally established with a focus on commercial and residential remodeling projects, our repertoire has evolved into a more diverse product line including: Sales and erection of pre-engineered steel structures ; including homes, shop facilities, garages, portable buildings, farm and ranch outbuildings