Move-in Special
Get $1,500 off on select floor plans and up to 2 months free base rent!!!
Contact our leasing office today for details and availability!*
Minimum lease terms apply. Other costs and fees excluded.
Living at Annex on 12th
SW Washington DC
The Building
![Rooftop lap pool at Annex on 12th with sun loungers and glass railing, overlooking downtown DC and the Washington Monument.]()
A Rooftop Pool Deck with a Monumental View
The pool deck frames the city in a way that few other buildings in DC can match.
![Open-air courtyard at Annex on 12th with modern lounge seating, fire pits, and brick walls surrounding the historic building.]()
Courtyard Calm and Outdoor Dining
Outdoor lounge seating, fire features, and grilling areas, all framed by historic brick
![Wide view of The Vault speakeasy’s main lounge, featuring the original barrel-vaulted skylight, red velvet seating, and gray swivel chairs arranged under warm ambient lighting.]()
Welcome to the Vault: Our Resident Speakeasy
This modern speakeasy pays tribute to the building's origins with striking architectural and design details like the original ceiling-spanning, barrel-vaulted skylight.
![Exterior image of Annex on 12th - adaptive reuse of the Cotton Annex building in Southwest Washington DC]()
Annex on 12th is LEED Gold Certified!
Annex is proud to be LEED certified.
![resident lounge with green velvet couches, double-height ceiling, plush area rugs, Art Deco chandelier, floor-to-ceiling windows, comfy boucle cream arm chairs]()
One-of-a-Kind Luxury Amenities
Explore a truly original and considered lineup of building amenities that feel like extensions of a boutique hotel.
![side view of renovated annex on 12th building with original tall windows and facade and US Department of Agriculture lettering]()
DC's Cotton Annex Building: From Past to Present
Explore the history and architecture of the Cotton Annex building, from its 1930s origins with the USDA to its new era with Annex on 12th.
