Complex sentence: They were built in 1949, close to St Thomas' Church, built as a daughter church to the then parish church at Pontesbury in 1840 and closed by 1985, since when it has been a private home called Church House.
Split into simpler sentences: They were built in 1949, close to St Thomas' Church. The latter was built as a daughter church to the then parish church at Pontesbury in 1840 and closed by 1985, since when it has been a private home called Church House.