Complex sentence: The first residents moved into Aidanfield in 2002, and by 2011 some 400 sections had been built on; when the subdivision is fully developed, more than 50 new roads will have been created.
Split into simpler sentences: The first residents moved into Aidanfield in 2002, and by 2011 some 400 sections had been built on. When the subdivision is fully developed, more than 50 new roads will have been created.