About Us

John Joseph Contracting, LLC was formed in 2002.  We are a Woman Owned Business that services the needs of clients in the DC Metropolitan and surrounding areas.  Our experienced technicians bring more than 40 years of experience to our company.  We are well equipped to answer all plumbing  and mechanical needs and concerns.



  • Woman-owned and operated
  • DBE Certified
  • UA Trained Mechanics
  • Our mechanics receive continued education
  • Medical Gas certified
  • Water Treatment installation certified
  • CPR and First Aid trained
  • Certified welders
  • Certified Backflow installation and certification
  • Competitive Pricing