Photo courtesy of Capitol Group Properties

Maynard Crossing, an under-construction mixed-use retail plaza in Maynard, has secured a tenant for its bank development pad.

Natick-based Middlesex Savings Bank has signed a lease to open a new branch location at the Market Basket-anchored development at 129 Parker St. in Maynard. The bank’s branch will be roughly 4,000 square feet and will come with a dual drive-thru lane. The office is expected to open in spring 2021, Southborough-based developer Capitol Group Properties said in a statement.

“We are thrilled to be continuously adding best-in-class tenants that will make Maynard Crossing a true neighborhood shopping center with great variety to serve residents of Maynard and other surrounding communities,” the firm’s retail leasing manager Brendan Carroll said in a statement. “Middlesex Savings Bank is deeply invested in the communities they serve, and we look forward to welcoming the bank to Maynard Crossing.”

The branch will be Middlesex Savings’ 31st.

“Middlesex Savings Bank has been part of the Maynard community for a long time,” Middlesex Savings Senior Vice President and Corporate Real Estate Director Adam Fandrey said in a statement. “We are pleased to be able to offer our customers additional amenities at this new location, including ample parking, drive-thru service, and convenient proximity to shops.”

The 306,000-square-foot Maynard Crossing broke ground in 2019. Market Basket, Planet Fitness and Dunkin’ will be among the first retail tenants to open in the fall of this year. The Vue at Maynard Crossing, a 180-unit luxury apartment complex developed by LeCesse Development, is now open with leasing underway, and Camellia Gardens, the 143-unit upscale senior independent living community developed by Hawthorn Retirement Group is slated for delivery in the second quarter of 2020.