Well then you would have to get creative and look to leverage these mega rental companies to to pay a Housing Duty or fee, you could disguise it in a green research and development way. Force them to get the properties up to a crazy high efficiency value and other "rental Rights". Build 10% rental properties per year. Or other methods of taxing-nottaxing.
So to summarise the last few years
- Mortgage interest offset has disappeared
- Empty houses now have to pay council tax and in some cases 300% tax.
- Landlords have to complete more background checks and more certification (many which were only for HMO's are now for all properties)
- Many boroughs have lowered their HMO status to be two households and three people. I.e if you have a 2 bed flat with a couple and their friend it's now a HMO, whereas before this used to be reserved for huge houses with 8+ people
All of this has been done.....it's forcing rent up. By all means push for affordable housing but know when something is counter productive.