Door Packages Built for Multifamily Housing / Construction
GDB Group supplies the commercial doors, frames, and hardware that go into multifamily communities — from luxury new builds to renovations and capital improvements. One point of contact, national service, and equipment that holds up under daily resident traffic.

Who we work with
Every multifamily project lives or dies on the schedule. Doors get specified late, ordered last, and then somehow they’re the thing holding up TCO. We’ve watched it happen on enough projects to know the pattern — and we built our process to break it.
GDB Group works directly with developers, GCs, and division leads on multifamily projects ranging from garden-style walk-ups to 600-unit mixed-use communities. We’re not a catalog company. We’re a small, hands-on team that ties out submittals, tracks the manufacturer lead times so you don’t have to, and shows up when something on site doesn’t match the drawings.We don’t slip the schedule. We protect it.
Supplying every door at AMLI Treehouse
GDB Group is the door supplier for AMLI Treehouse — AMLI Residential’s 600-unit mixed-use community in Addison, TX. Across 11 buildings of luxury apartments, townhomes, and ground-floor retail, we’re supplying every door on the project — entrances, units, fire-rated assemblies, and all the hardware that goes with them.
Our Multifamily Product Mix
With decades of experience and industry knowledge, we focus on partnering with the best manufacturers. Our expertise has guided us to work exclusively with trusted, reliable equipment suppliers who meet the unique needs of the facilities we serve — across automotive and multifamily.
The workhorses of every apartment building — corridor doors, stair doors, mechanical and electrical room doors, trash chute doors. Spec’d to fire rating, delivered with the matching frame and hardware.
20-, 45-, 60-, and 90-minute rated assemblies that pass inspection the first time. We pull the right product for the rating your AHJ is enforcing.
Lobby and amenity entrances that look the part on lease-up day and still work on year five. Aluminum storefronts, glass entries, and the access controls that go with them.

As a national ASSA ABLOY DSS dealer, we supply the full hardware program — locksets, exit devices, closers, hinges, and electrified hardware. One SKU list across every property in your portfolio.
For ground-floor retail, parking entries, and back-of-house service openings.
Closers, exit devices, hinges, locks, and accessories — coordinated and shipped with the door.
Service That Outlives the Punch List
Doors don’t stop being your problem at TCO. We handle warranty claims, capital improvement door swaps, and emergency repairs nationwide — for the same projects we delivered the original package on, and for buildings we’ve never touched. Property managers and asset teams keep our number for a reason.
Nationwide field service
- 24/7 emergency repair
- Nationwide field service
- Capital improvement and value-add door scopes
- Direct manufacturer warranty support
Nationwide Sales and Service You Can Count On
You don’t need more noise. You need results. We’re GDB Group and we’re not here to compete on brochures. We’re here to win in the field.




