Hi
@Lisa22williams78 welcome from me too.
I’m afraid I too advise caution. I looked after my dad more or less by myself for two years and was totally stressed out by the end of it. Introducing professional dementia trained carers helped me to keep him in his own home until about 5 months before he died unexpectedly. I didn’t live with dad so I got to go home and have a break.
Someone with dementia can be quite destructive of a property, especially once incontinence starts, so I suspect you would lose a large chunk of your deposit - if not all of it - when the landlord is faced with a huge cleaning bill or having to replace the flooring.
I understand you wanting to look after your mum but feel she has probably reached the stage now where she needs a whole team of people to look after her. Is there any way you could stay with your parents for a week or so, even if it means sleeping on the sofa, so that you have a better idea of your mums needs and then you can decide whether she needs extra care at home so your dad can cope or a carehome.
If you can arrange it, regular respite can help the main carer to cope and delay the need for a move.
Does your mum have attendance allowance as this can help with extra costs? Has your dad had a carers’ assessment from Social Services? This can provide extra support beyond what your mum needs to help him cope for now.