Tenants taking up the right to buy need to be advised that they are also buying the obligation to keep the property jn good repair. This is a big issue in leasehold properties when the freeholder is the one that decides on the level of repairs and when they should be carried out. The RTB is much maligned, but I can see little wrong with building a house for a few thousand pounds in 1930 (or later), getting 80 (or less) years rent from it, then sell it (and the obligation to keep it in good repair) for many thousands of pounds. A good business model. Accepted that selling a property for less than it cost you to build just shouldn't happen.