On 1/7/26 at 12: 15 i went to the Riverhead Branch of RBS. I needed a quote for all the materials for a 4000 sq ft new construction. I had a complete detailed take off, about 1" thick. There were thre

Very trustworthy accountable place with all good well trained employees. I have been shopping here for years and now work here myself, and all employees are knowledgeable and care. It is a wonderful f

I just finished doing a bathroom renovation with Sue G. at Riverhead Building Supply and couldn't have been more happy with the service and attention. She was helpful, responsive and reliable. I highl