Discover the benefits of BSI. To become a member, call us at 1-866-786-6313 Joining BSI Membership is open to quarries, fabricators, distributors, wholesalers, installers, importers, and anyone else who has an impact on the natural stone industry. Building Stone Institute is very proud of its member firms and asks every member to strictly adhere to a Business Code of Ethics.  This is done to assure the public that when doing business with a BSI member, you will receive the best service available in the industry. BSI welcomes new members who are in business related to natural stone and who are willing to abide by the Code of Ethics. The fee for membership is $1,000.00 for domestic membership (primary or single location) and $1,300.00 for International members. Those wishing to have their additional locations, sister companies, divisions, etc. recognized as members can do so for an additional fee of $200 per location. Professionals (Engineers, Architects, and Interior Designers) may join for a reduced rate of $200.00 per year. BSI Membership Form BSI Brochure BSI Strategic Plan