There seems to be a couple of issues discussed very frequently here that could be potentially helped (not solved) by the government incentivising downsizing for home owners.
There's a significant issue of property availability to buy and rent, and a huge number of older people who are single/couples in 3/4/5 bed houses. This means that younger generations are stuck in their starter homes and priced out of long term homes.
MIL & FIL have a 4 bed detached and constantly complain about the cost to heat and maintain it, but hate that it'll cost them loads in stamp duty, moving fees & solicitors costs to downsize.
Perhaps Rishi could incentivise downsizing, so if you reduce the number of bedrooms when you move it over 60, then you're relieved of stamp duty, and perhaps receive a £2,000 (debatable) grant towards moving costs and expenses.
There are also constant complaints that older people stay in their homes long after they 'should' based on significant care needs, decreasing mobility and long term repair issues.
The incentive could encourage people moving to smaller houses, flats, retirement communities or even combining households with family members.
This would hopefully:
- Free up larger properties for families/younger people wanting to upsize
- Hopefully mean older people have less heating and energy expenses
- Encourage older people to move into properties more suitable to reduced mobility & care needs longer term
- Mean older properties are restored/better maintained
I appreciate there are loads of people who want to stay in their family home until the end, and this wouldn't change that view point, but maybe a social movement towards older people reducing the size of their homes would create a bit of social contagion where it's more openly discussed?
Also, house builders could be encouraged to build more bungalows/smaller homes specifically for this scheme which perhaps are built with stair lifts in mind etc.
YABU - this will never work, ridiculous suggestion 
YANBU - this has legs, you should go into politics 