When buying, making offers and attempting to buy investment property, buy to let or holiday let property you may incur many fees and expenses.
If the purchase falls through and you have lost money, HMRC will not let you claim or offset these expenses against other property rental/profits.
Purchase costs are a capital expense i.e. a capital loss that can be carried forward indefinitely.
If you subsequently sell any other property investments at a profit ie there is a capital gain, you can offset previous carried
forward losses as a capital expense to be offset against CGT.