You don’t have to pay business rates on empty buildings for 3 months. After this time, most businesses must pay full business rates.
Some properties can get extended empty property relief:
If your property is not capable of beneficial occupation – for instance, if it is in poor condition and cannot be economically repaired – the Valuation Office may judge it should be taken out of rating altogether.
The quickest and easiest way to find the rateable value of any non-domestic property in England is on the Valuation Office Agency website.