PD using breeze blocks for garage outer skin: temp or perm measure?

A developer is building garages on a site adjoining my property. The proposed garages will come right up to the boundary with mine and my neighbours’ gardens. He claims, on his planning application, that the outer skin will be facing bricks while the inner is breeze blocks. He has constructed a wall along an adjacent side of the site using just facing bricks. However, before construction was paused, as he has yet to get planning permission, he dug a couple of metres of foundations and laid some breeze blocks around the corner right onto the boundary with my property. I assume this was to stabilise the wall he had already constructed. On this small part of the wall, breeze blocks are the only materials used for what appears to be the outer skin. Could this be a temporary measure until the work restarts and the breeze blocks get replaced by facing bricks or does this mean the developer is either NOT going to use facing bricks along my boundary or he expects to come onto my land to lay the outer wall? These were the scenarios that occurred to me, as a layman, but there could be others. Any advice would be greatly appreciated. Many thanks