Being honest I dont think that I have seen any, especially not on the networks anyway.
That would be a hell of an affiliate scheme though if you got a percentage of a house sale.
Probaly not what your looking for but there are of course flats and holiday rentals e.g hotels and stuff like that.
The last property scheme I saw was for bulgaria properties, but that never lasted for long.
If need be do a search in google for property affiliate or something similar and you might be lucky and find an independant.