The CVS store in Lower Mills will expand its footprint in the Dorchester Avenue building it currently shares with a Tedeschi's convenience store, the Reporter learned this week. The Tedeschi's store will close its doors this weekend, according to sources familiar with the plan. The Tedeschi's store was operating at the location through a sub-lease authorized by CVS, which chose not to renew that lease for the new year, according to Alan Reardon, an executive at Tedeschi's. A district manager from CVS did not return a Reporter inquiry this week seeking comment on the pharmacy's intentions for the new space. The property - which includes a large parking lot - is owned by the Alfred DeFranco Trust based in Scottsdale, Arizona.