Complex sentence: Between 1911 and 1913 they built six houses along the north side of Parkdale Boulevard including the Craftsman style Betz and Withrow residences--heritage houses with character that contribute to the historic residential streetscape.
Split into simpler sentences: Between 1911 and 1913 they built six houses along the north side of Parkdale Boulevard. These heritage houses with character contribute to the historic residential streetscape.