Complex sentence: In the 1970s Oakhusrt House was converted into flats however with the bankruptcy of the Wire works and dilapidating condition of the building the flats were abandoned in the late 1970s since this point the house has remained unoccupied and is now derelict and a partial ruin.
Split into simpler sentences: In the 1970s Oakhurst House was converted into flats; however, with the bankruptcy of the wireworks and the deteriorating condition of the building, the flats were abandoned in the late 1970s. Since then, the house has remained unoccupied and is now derelict and a partial ruin.