John J. Dougherty & Sons, also known as JJD, offers a range of site work and paving contracting services. It is a family-owned and operated business that serves several industrial and commercial customers in southeastern Pennsylvania, New Jersey and Delaware. In operation for more than 50 years, the company also provides excavation, project management and cost estimation solutions. John J. Dougherty & Sons works in collaboration with developers and general contractors. It offers a variety of construction equipment on a rental basis. The company maintains an art shop.