We really want to stay on our road but need a bigger house. We were all set to move to the house across the road but it all fell through last week 
A lot of the neighbours are old........

Would it be terrible to pop a note through each door saying, 'hello, Mr and Mrs Ploppy here from number 4, we really want to stay in the road etc etc, if you ever think of selling, please drop us a line!'???
I do know a lot of them, so I'm not sure if this is best or if I should ask face to face; I sort of feel that puts people on the spot rather and a letter is easier all round, especially if they want to ignore it.