Anon postcode?
The original plan was to just use postcodes instead of names. Granularity maintains the value of the info for researchers and other interested parties.
So.. sell it to a life insurance or health insurance company anonymised.
An insurer "thwarted" would simply raise the premium for the fifteen postcoded households instead of the one containing the bloody expensive risk (precondition). As long as none of your neighbours have something nasty or hereditary you'll be fine.
If we have the gender and age of of the risky person in your anon postcode of 15 houses.... Nice simple couple of filters. So you just hope your next door neighbour is a healthy person.
Either I don't trust insurers or I need a tinfoil hat.