I can absolutely confirm this purchsse. I bumped into an old friend of mine today who has actually worked on the building. He reports that the house was on the market at £500,000 and that the price paid is said to be less than that.
I have no documentary proof to offer but am in no doubt whatsoever that this story is the truth.
The policy for translation units is that they should be in the area where the language is most spoken. I also have no doubt that this house will also be used for privileged members of the bethel family for R & R.