As I said earlier, my mum downsized from a three bed bungalow to a tiny two bed (one and a half bed, really) retirement bungalow, and it was a huge job for her to cull her belongings enough that she just about fits in her new place - and even with all that she's got rid of, her new place is still hopelessly cluttered, which is not helping her to feel at home.
Something I forgot to mention was the emotional issue for her. She had lived in the old bungalow since 1972 - she and dad moved there when I was 8 - and has so many memories there. She and dad spent years making a wonderful garden, that was her pride and joy, and she and dad lived there together until he died in 2000. He actually died at that house (it was very sudden) so that added to the memories. Add to that the fact that all her friends were around that area, and you can see why she loved that place so much.
At the time, dsis and I thought the move was the best thing for her - she was moving close to my sister, so would have family close - something she hadn't had before - and the new place would be more manageable for her, as well as having the advantages of an emergency buzzer if she needed help (the new bungalow is in the grounds of a care home, and the staff will answer the buzzer). But now I am not so sure.
By the time she actually moved, she hated the idea. She was so unhappy at the thought of leaving her home and her garden, and the place where all her memories of dad were. But she went ahead with the move, and even now, nearly 2 years on, she is not happy in the new place. She hasn't made any new friends, even though the other residents of the bungalows are friendly people, and has made no effort to join in with things in the town - we have suggested a mobility scooter, so she could go to the library for their knitting group, and I have found the local WI, who would happily give her lifts to and from meetings ("I don't want to go out at night" was her response). Basically, she sees it as a house, not a home - and I think moving there has made her depressed.
Please don't underestimate the effect that moving has on people, especially an older person who has a support network, friends and memories tied up in their current home. I now deeply regret encouraging mum to move. It would have been far, far better to do equity release on the old house, and use that money to support her living there - it was very remote, with almost no public transport, and the house and garden were getting too much for her - but all of those problems were solvable, with some cash - and mum would still be in her home, and happy.
Now she is depressed and probably more lonely than she was in her remote village. 