In message , Adrian
writes

I notice you snipped the rest of that response. Shall we consider it
again?

Compare Richmond prices with an equivalent area, with equivalent
transport links and proximity to central London, but without the
aircraft noise.

Or, let's put it another way, what d'you think would happen to
Richmond house prices if the aircraft noise stopped tomorrow?

What on earth is the point of speculating on something that will never
happen? But do feel free to do so if you wish, and let us know what you
think would happen, and why.
--
Paul Terry