An affordable, garden-style condominium unit is being offered for sale in the Powder Mill development in downtown Andover. The seller is asking $170,500 for the 940-square-foot, two-bedroom, one-bath unit. It is within walking distance of shops, the library, grocery stores, and restaurants. It features forced hot air gas heat, central air conditioning, a deeded parking space, and an on-site fitness room; washer, dryer, and other appliances are included. The building is pet-friendly. Prospective buyers must meet income guidelines, ranging from a maximum annual income of $70,725 for a one-person household to $101,025 for a four-person household. For more information, e-mail firstname.lastname@example.org, visit jterealtyassociates.com/resalesnorth.html or call 978-258-3492.