Sebastian Builders a Family Owned and Operated business based out of Shamong, NJ. We also have a warehouse facility that we use this enormous warehouse to buy materials and stock them to give our customers the best value for their hard earned money.

Sebastian Builders is a family owned and operated company. You can always find the owner of our company, Darren Mainardi, working on every job site with the rest of his staff to ensure that projects are completed to the highest levels of quality.

Sebastian Builders has a long list of references that go back over more than a decade. Just about any company can give you a few new references, but Sebastian Builders can give you a list of references hundreds upon hundreds of pages long. Just check out our referrals section to see a sampling of the many thank you notes we have received over the years.

If problems should ever arise, we pride ourselves on resolving them in an extremely expeditious manner. Any customers that we have worked for in the past can tell you that our end products hold up like no one else's ever could.



Sebastian Builders, LLC will provide quality workmanship services at a level that will remain unsurpassed by any of our competitors while breaking the mold set by common stereotypes associated with roofers and contractors.

We stand behind every project we undertake.

Sebastian Builders. is proud to be certified GAF Master Elite®

A certified GAF Master Elite® roofer is the only contractor that can offer 2 of the best warranties in the industry, Silver Pledge and Gold Pledge, both backed by GAF. GAF also covers a Master Elite’s workmanship.



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