Helical Piles of New York is a Long Island helical pile installer owned and operated by brothers Silvio and Danny Rebelo, according to its site. The site says the company has served Long Island for 25 years.
It covers foundations, helical piles for solar panels and decks, underpinning, and pulldown micropiles. Project pages describe work in Shelter Island, Southampton, Yonkers, Bay Shore, Lindenhurst, Hampton Bays and Fire Island. The site says piers are screwed in with hydraulic equipment to reach stable soil below fill.
The listed service area is Nassau and Suffolk counties. Call +1 516-250-2515 or 516-315-8591. The site says the team works with local building departments; ask what permit documentation is supplied and who engineers the piers. These are general suggestions, not statements about this company's practice. Before signing, get the scope, pile specifications and permit responsibilities in writing, and confirm the company's licensing and insurance.