@funnelfan
In my case, Mum and Dad had cleaned out the loft (with my DH's help) some years previously, plus the shed.
I had to empty the rented property when Mum moved in with me. The shed had been re-filled by then.
I went through that and had the shed transported to our garden. (It did make economic sense, I promise.)
Clearing the rest of the house and transporting furniture to my place was still stressful. I did get a local house clearance firm, but I still had to go through everything first. They don't work quite like the usual firms that you pay for. Basically, they check out the house beforehand and decide whether they can get any money for the white goods: the washing machine was taken directly from Mum's place to their customer. I'd already given the cooker and a Craftmatic bed to a colleague; the fridge freezer came over to the extension for Mum.
The firm reluctantly agreed to take a couple of pieces of furniture and the carpet to the tip for me. (The tip was very close to the estate.) They also got other items to sell on in their shop, but I can't quite remember what they were now - large mirrors and pictures, I think.
Mum had put her paperwork in order for me...but when I went through it, it was muddled - dementia had got in the way. (It genuinely had been in order previously.)
The worst problem was getting rid of a large concrete garden roller which Dad had got in 1959. To my astonishment, a picture on Freecyle resulted in three people wanting it.
I then had to run about filling and painting nail holes etc to keep the council happy. I'd managed to keep most of the garden in check, but hired someone to rotovate one section and prune a couple of trees.
I also had to call a local joiner to remove the safety gate on the stair and replace a door Dad had removed between the kitchen and hallway. (The door was stored in the hut.) Then I had to pain the door and where the gate had been.
God bless the joiner, he refused to take any payment so I gave him and his apprentice something to pay for a pint.
The council tried to give me a bill for 'failing to sweep out the house'. It turned out that they were charging me for failing to remove the stair carpet...which was underneath a council supplied stairlift. (I'd checked with the town house officials beforehand and they'd told me not to worry.) Yes, I got the charge overturned.