Impromptu Meadow

There's an impromptu flower meadow halfway up our street, on a gap site between two buildings. Before we moved here, but I believe there was some controversy last year when a local 'guerrilla gardening' initiative on the site was unceremoniously ripped apart. The people doing the gardening said they were doing it with the knowledge of the owners, the contractors on the site claimed they had tried to get in touch with the gardeners but having had no reply, had a schedule to keep to. Not that pressing a schedule obviously as here we are over year later and it's still full of weeds/flowers and no sign of building works. A little bit of 'online digging' (no pun intended) seems to point to the planning permission on the site being granted to a local collective of five families, looking to build houses for themselves to live in. If that is the case, does that make it more disappointing that bad things seemed to be done in their name than if it had simply been a faceless national company? More generally, how difficult would it be to clearly identify the owners of every patch of undeveloped land on some easily accessible online map. Even better, have something on the ground itself, with a sign to point out who is responsible for the land and giving their contact details. That way everyone would know what was going on, and on whose behalf, and perhaps better facilitate the local communities impromptu use of the space, while waiting for it to be re-developed? With some feeling of involvement and connection to the space there might be more local concern to make sure it doesn't get into too bad a state while waiting to be developed, improving the local environment for everyone. As well as giving local people more of an incentive to keep a benign eye on things that can ultimately only be in the landowners' interests. (Unless they have no intention whatsoever of developing the land, in which case, I say name 'n' shame - gap sites that stay like that for decades shouldn't really be allowed.)