Not sure when the decision was actually taken, 1948 I think. Rhendahlen was built about then, along with all its pads (there was an article in Soldier about it a couple of years back...)
The pad I lived in Celle (best house I've ever lived in to date) was built by the RAF, when they owned RAF Celle (now a Bundeswehr Helicopter Base) and they were built in 1949. Plenty of work for the locals...
One day when I was washing the car, a silver haired old dear stopped to chat. She had lived in one of them as a maid. It seems along with the house, the officers of the day got a maid, a nanny and an untermensch who lived in the cellar who's job was to keep the boiled full of coal and the house warm.
Sadly, we got none of them but the house was huge!