Complex sentence: The oldest portion of the house was built as a two-room, two-story saltbox style house between 1702 and 1710; a kitchen and additional rooms were added on in the early 1760s, expanding with the Berrien family.
Split into simpler sentences: The oldest portion of the house was built as a two-room, two-story saltbox style house between 1702 and 1710. A kitchen and additional rooms were added on in the early 1760s, expanding with the Berrien family.