Alexandria Real Estate Equities has acquired Reservoir Woods East, a trio of Waltham buildings that includes the U.S. headquarters for gas and electric company National Grid, for a combined $330 million.
The acquisition marks another step outside the core Cambridge and Boston market for the California-based life sciences development company. Alexandria (NYSE: ARE) has historically stayed close to the urban core but in the past year has acquired property in markets including Watertown and Newton…