A 12,200-square-foot office/warehouse building at 290 Weymouth St. in Rockland has sold for $1.1 million to 290 Weymouth Street LLC.

The seller, Granite Development Realty Trust, purchased the Rockland building for $100,000 in October 1995, according to records obtained by The Warren Group, publisher of Banker & Tradesman. The property, which sits on nearly 1 acre, was last assessed for $800,900.

The new owners intend to refurbish the common areas, upgrade the mechanical systems and reallocate the warehouse space for its tenant, Commonwealth Plumbing Co., according to a statement. The building is currently fully leased to Starbro Electric Co. and Commonwealth Plumbing.

Bill Stone of W.C. Stone Real Estate and Property Management of Rockland represented the seller, procured the buyer and negotiated the leases in the transaction.

"This sale represents a premier opportunity to acquire a first-class building at below its replacement cost," W.C. Stone Real Estate and Property Management said in a statement.