Sweetgreen, a popular salad chain, is one of three new leases confirmed to be part of The Avenue development lot across from GW Hospital.

Boston Properties, the developer of the mixed-use property at 2200 Pennsylvania Ave., – formerly known as Square 54 – has also signed leases with Citibank and a restaurant called Roti.

Jake Stroman, a senior project manager with Boston Properties, confirmed Monday that the leases were signed and noted that all three would be found in the residential component of the site.

Whole Foods Market signed a lease with Boston Properties in August and will also be located in the residential part of the site. Whole Foods representatives said they hope to take GWorld as a method of payment when the 36,000-square-foot space opens for business.

Another eatery, Devon & Blakely, and NIH Federal Credit Union previously signed leases to be part of the office component of the property as well.

The property, which began construction in the fall of 2008, is slated to open in the fall of 2011. It will include apartments, office space and retail space.