Welcome To Builders Stair Supply

Over 35 Years Experience

At Builders Stair Supply, you won’t be left to navigate on your own like you might at big box retailers. We provide the area's most extensive selection of stair parts, far surpassing the limited options offered elsewhere. Instead of just a handful of choices, we present a wide variety of styles across every product line. For example, our wrought iron baluster collection features over 70 unique designs, and our wood components can be crafted in nearly any wood species. 

Our team of experienced professionals is here to help you find the best solutions for your home, whether you're building new or renovating. At BSSI, we address all your concerns, including code compliance, product details, installation guidance, and quality assurance. These principles form the foundation of our business.

For over 35 years, Builders Stair Supply has proudly served professional stair builders and custom home builders throughout the Greater St. Louis Region. When we say, 

"Stair parts designed with the stair builder in mind,"

it’s more than a slogan—it’s our guiding principle. Our commitment is to provide the highest-quality stair parts, meticulously crafted for precision and reliability. 

Whether you’re a homeowner, a stair builder, or a home builder, Builders Stair Supply is your partner in success. We offer:

• Expertise in Product Knowledge
• Comprehensive Installation Guidance
• Assistance with Code Compliance
• The Finest Quality Products Available
• Professional Installation Services

Spring 2018 Catalog

Click Below to Create Your Own Design

Our Services

We specialize in new staircase installations, remodeling existing staircases and balustrades, and providing expert custom installations. Our extensive product offerings include:

• Balusters: Wood, metal, wrought iron, stainless steel, and horizontal railing systems, including CableRail by Feeney.
• Newel Posts: Turned and box styles.
• Handrails and Accessories: Handrails, fittings, treads, starting steps, and skirtboards. Skirtboards can be housed for compatibility with the “wedge” stairbuilding system.
• Specialty Stairs: Interior and exterior metal spiral staircases.
• Attic Stairs: High-quality solutions by Rainbow Attic Stairs.
• Exclusive Designs: Manufacturer of the innovative “Comfort Rail” system.

Whether you are looking for contemporary or traditional, Builders Stair Supply provides unparalleled products and craftsmanship to bring your vision to life.