I suggest you might like to try getting another router for the "target" house, and set it to act as a repeater for the first router. Yes, you will need higher-gain antennas for both routers, and you will need to make sure the router in the "target" house does have the function to be able to act as a repeater (many do not. Ask your local dealer/ reseller). Some line-of-sight between the 2 routers would also be good. 50m may not be very far, but expect to have some drop in throughput. Hope this helps.