Complex sentence: The village underwent some expansion in the 50s when the so-called Lake District Estate was built just off Whickham Highway then later in the decade the Oakfield Estate just off Whaggs Lane was built.
Split into simpler sentences: The village underwent some expansion in the 50s when the so-called Lakes Estate was built just off Whickham Highway. Then later in the decade the Oakfield Estate just off Whaggs Lane was built.