About JB Construction Plc. JB Construction has been in business for 30years. Most construction companies work from their homes, we don’t! Come stop by our office here in Lancaster and take a look at our show area of custom patios and other construction projects. We are very accessible and our work is insured in every way. When you are looking for a great construction company anywhere in Lancaster, Palmdale, Quartz Hill or nearby areas you do not want to just look at the bottom line. Sometimes the cheapest isn’t the greatest, and may cost you extra in the long run