Dean Koep Jr. LLC. Mason Contractors

Dean Koep Jr. LLC Mason Contractors is a 2nd generation family-owned business headquartered in Whitehouse Station, NJ.

Dean has been serving Central Jersey’s masonry needs for over 25 years. Specializing in home improvements. From patios and walkways of bluestone, pavers and concrete, to steps, cultured stone, chimney repairs and outdoor entertainment -- including BBQ's, fireplaces, fire pits, and bars. We also do all repair work.

You are getting quality workmanship when doing business with Dean.

  • Insured, Registered NJ Home Improvement Contractor
  • Free Estimates
  • Serving Hunterdon, Somerset, Middlesex, Warren, Morris, Union, Essex counties
  • NJ License #: 13VH003744900
  • Phone Number: (908) 534-1816
Dean Koep

Dean Koep Jr.

Owner & President

Dean learned his craft from his father - Dean Koep Sr. - who has over 40 years experience in the trade. He passed down his knowledge to his son, who created his own business and has been successful at it for over 25 years!

Matthew Miller

Matthew Miller


Matt has worked with Dean for many years, learning the same skills from Dean that Dean learned from his father. Matt is highly skilled and very friendly to work with.


Hiring Dean Koep Jr. to build our new patio was an excellent decision. Not only is it beautiful, but Dean and his crew finished on time and within budget. It was comforting knowing Dean has built hundreds of patios with essentially the same, trustworthy crew year after year.


Dean Koep completed an extension on our patio. The job was completed flawlessly and right on time. From the moment Dean and his crew arrived, we knew we had made the right choice. We are thoroughly satisfied with our new patio!


Dean Koep and his team provided outstanding masonry services. I highly recommend him and his team. His contractor team is reliable & customer-focused.

Angie's List

Repaired brick top of chimney, replaced flue. Very professional, very prompt. Would recommend him.