Complex sentence: Property prices on the street sailed past the £1 million mark in the late 1980s, with house prices now typically starting from about £5,000,000 ($9,497,759 USD), with no upper bound.
Split into simpler sentences: Property prices on the street sailed past the £1 million mark in the late 1980s. House prices now typically start from £5,000,000 ($9,497,759 USD), with no upper bound.