The apartments in the new building under construction on Haven Street are scheduled to open by Aug. 1, not this month, based on a building code change, and people are leasing both residential and commercial space in the building now, according to the development company.

The new code allows gas meters to be located inside, on each floor of the building, Gwen Noyes, Oaktree Development senior vice president in charge of marketing, told Patch Monday.

Two or three people have already signed apartment leases, according to Noyes. A model unit will open next month, she said.

Apartments are located on the upper floors; commercial space on the ground level.

Zinga frozen yogurt has signed a lease for commercial space, according to Noyes. Oaktree is close to signing a lease with a restaurant, which she declined to name and Noyes said the developer is talking with a couple of other potential business tenants. One is another restaurant which, she said, would be “complimentary” to the other one. One prospective commercial tenant wants to buy, rather than rent space, Noyes said.

“We are not able to respond to that,” she said.

Upstairs, market-rate apartment rents range from $1,800 to $2,000 a month for a one-bedroom unit, depending on location and amenities and from $2,200 to $2,600 for a two-bedroom apartment, according to Oaktree Development. The price includes an assigned parking space in the garage under the building and water and sewer charges, according to Chryse Gibson, Oaktree’s chief administrative officer.

Eleven of the 53 apartments are affordable, as defined by the state. Winners of an affordable housing lottery for those units will begin to choose their units on July 9, Gibson said.  She is keeping a waiting list of applicants should any of those units not be filled.

Gibson is also handling reservations for market-rate apartments.

Contact her at cgibson@oakdev.com.