First time on the market in over 100 years. Rare opportunity to own both a single family and a three-family on the same lot in West Cambridge. Introducing the Royal Avenue Residences. 41 Royal Avenue is a single family set back from the street with three bedrooms plus a study. Staircase with period detail. Bonus third floor. 43 Royal Avenue is a three-family with three light-filled 2-bedroom units, all with four exposures, generous ceiling height, and front & back porches. Ample yard space in front of 41 Royal and behind 43 Royal. In addition, there is off-street parking for two cars. Walk Score� 85 - "Very Walkable." Offering easy access to Harvard University & Harvard Square, as well as Observatory Hill, Huron Village & Fresh Pond.