rates

Other

Did you get planning permission for the conversion? Normally, loft conversions don't need planning permission if they are to add space to your existing home for your own use. However, when you convert anything that changes its use, eg. house to flats, shop to house, single house to more than 1 separate dwelling etc., planning permission is mostly required and certainly building regs would be required with a visit from the council to issue you with completion certificate (which you must have by law if you ever want to sell). At that stage, once the council were aware that you were creating a separate dwelling, I am sure they would be after you for extra council tax!! If in doubt, call them and ask if you need the new flat to be assessed separately or if it can be included in your council tax bill - which would not normally happen until you sell.