Whose land is it anyway?

There was much confusion and some outrage a few weeks ago when this piece of land (a green surrounded by houses) in Dolphin Close went up for sale for £10,000.  There is even an artists impression of the houses that could be built on it here.

I took a picture on our dog walk this morning, expecting to find when I got home, that the details would have been removed.  But no, it's still for sale.  I hope the powers that be are on the case.  Surely it couldn't be built on, but it is a puzzle as to who owns it and why it's for sale.

And if you thought that was ridiculous, that a look at this slither of land also for sale nearby.