AT YOUR SERVICE
FROM FRAME TO FINISH

All you need for residential building

WINDOWS & DOORS

Find the best brands for custom doors and windows at Riverhead Building Supply.

For kitchens, home office, mud room and more visit a Design Showroom.

Choose from a vast selection of stock moulding materials and custom millwork capabilities.

A tool for every job, hand tools, power tools, cordless tools and accessories.

BUILDING MATERIALS

Lumber, drywall, roofing, siding, decking, flooring, masonry and much more.

ARCHITECTURAL HARDWARE

Riverhead Building Supply features quality door hardware from top brands to personalize each project.

Find top brands of pavers, bluestone, and natural stone.

General hardware store items such as fasteners, connectors, electrical, plumbing, and more.

WINDOWS & DOORS

Find the best brands for custom doors and windows.

BUILDING MATERIALS

Lumber, drywall, roofing, siding, decking, masonry and more.

CABINETRY & KITCHENS

For kitchens, home office, mud room and more visit a Design Showroom.

DOOR HARDWARE

Quality special-order door hardware from top brands.

MOULDING & TRIM

Choose from a vast selection of stock and custom millwork.

MASONRY

Find top brands of pavers, bluestone, and natural stone.

POWER TOOLS

Hand tools, power tools, cordless tools and accessories.

HARDWARE

General hardware store items like nails, electrical, plumbing, and more.

KITCHEN DESIGN CENTER

A lifetime of memories

Established in 1948

Our mission has been to consistently provide our customers with
professional service, competitive pricing, and quality materials while
supporting our local communities and environment.

Store event calendar

See upcoming events in your area and meet brand reps to learn, touch and feel the latest building materials. Bookmark this page and check back often to see what’s happening.

Get connected with the RBS Newsletter

From the latest styles and trends, to the best deals around, the RBS Newsletter will keep you up-to-date on everything you need to know.

Partner with over 500 brands