@Suzi888
It’s not depreciation of assets. It’s deprivation of capital and it depends how much and how long it took and what was bought. If your property needs work then you absolutely can spend money wisely. Things like cruises/holidays/huge monetary gifts to children are frowned upon and you will be treated as depriving yourself. Deprivation as a whole is difficult to prove in law.
It's not helped by the lack of clarity in regulations about what sort of spending is acceptable and what is regarded as intentional deprivation.
In my experience (benefits adviser) replacing an old car with a newer one is fine as long as the newer one isn't extravagant, so (eg) a 3-year old Fiesta would be fine, a 3-year old Maserati probably not. Same with furniture and stuff - Heals prices may raise a few eyebrows at DWP, but mid-range stuff is likely to be ok.
You can also use capital to clear debt, that is perfectly acceptable. So pay off any credit/store cards, rent arrears, loans etc, which will save money in the long run.
I also won a deprivation case appeal where the claimant had given each of her 4 children £5k each, because that is what she had promised her husband she would do with his death in service payment. The tribunal regarded that as a financial commitment that should be honoured, which surprised me, so passing money on to adult children isn't always a no-no.
Do you get PIP, OP? Because that remains in payment regardless of of capital. And it sounds rather like you should be getting PIP, so look into applying if you don't get it already.