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Premium Interior Trim & Custom Millwork in Chattanooga, Knoxville, and Huntsville.

Transform your house into a home with the craftsmanship and quality of Interior Trim & Supply.

Since 1987, we have been the Southeast’s premier partner for custom home builders, contractors, and homeowners. From timeless crown molding and baseboards to custom interior doors and handcrafted stair parts, we provide the architectural details that define a space. Whether you are building a new custom home or renovating a single room, our expert team offers individualized assistance, competitive pricing, and a vast selection of in-stock and special-order millwork.


Visit our Chattanooga showroom today to explore our collections, including exclusive regional access to Koetter Woodworking and Metrie Option M styles. We don’t just supply trim—we help you create a legacy of style and quality in every room.

Elevate Your Home with Premium Railings, Moulding, Trim, and More!

Whether you're in search of a new iron railing for your staircase or a builder seeking a specific crown moulding for your upcoming project, Interior Trim and Supply is ready to provide the high-quality materials your home or construction deserves. Browse our products and catalogs to discover exactly what you need!

Bedroom with a blue wall, brown furniture, and abstract art above a bed.
Wooden staircase with wrought iron balusters; brown railing and white steps.
White built-in entertainment center with fireplace, TV, and arched bookshelves in a living room.
Living room with archways, red chairs, and a view into a red and white kitchen.
Dining room with a chandelier, wooden table, and chairs set for a meal.
Wooden outdoor seating area with benches, cushions, and sheer curtains.
Bronze door handle with keyhole on a wooden door, partially open.
Wooden front door with glass panes and sidelights, set in a brick frame.

Our Service Area

Conveniently located off Bonny Oaks Drive in East Chattanooga, Interior Trim & Supply serves the entire metro area and delivers within a 75-mile radius. We also provide on-site consulting and delivery across Tennessee, Georgia, and Alabama.