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Image by Tim Mossholder



You've come to the perfect spot if you want a local installer who can assist you with high-grade paver installations. With decades of experience, a talented crew, and our owner on-site for every project, we will create a stunning retreat right outside your door. 


Keystone Design is an ICPI certified installer. The ICPI Certified Concrete Paver Installer is THE industry recognized status for the professionals committed to industry guidelines for segmental concrete pavement installation.


Our process is designed to ensure that every project is individually customized to your needs. We strive to build personal relationships with our residential customers, business owners and property investors. 


Keystone Design, LLC was founded by Fred Sanguilliano, who came from a family of Italian craftsmen and after a successful career in the business world, decided it was time to return to his roots.  He and his wife Nancy launched Keystone Design, LLC in 2003.  With a strong desire to return to a time when skilled craftsmen took pride in their work, Fred based Keystone Design on the artesian model used by his ancestors. 


Fred hired Turner Prosser in October 2003, shortly after starting his new business. With Fred as his mentor, Turner developed his craft and artesian style over the next several years.  In February of 2014, Turner purchased Keystone Design and has continued the tradition started by Fred and Nancy of providing exceptional customer service and a craftsman eye for quality and design.  Turner has come by his creativity and flare of design honestly.  Dan Prosser, Turner’s father, was a co-owner and landscape designer for Tallahassee Nurseries, Inc. until his retirement in 2001.  Turner has received several certifications to enhance his hardscape knowledge and skill.  He is a certified installer, designer and trainer with the Interlocking Concrete Paver Institute.  Turner’s customer service, quality work and attention to detail have been his trademark in the Tallahassee and surrounding area. 


We Love What We Do 

We'll come to you, listen to your needs and wants, and then come back to you with a logical, feasible plan that works for you. Our first-time customers continually become our long term customers time and time again, choosing us for all their hardscape needs. Call us today, and see what our commitment to quality is all about!

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