Very, very easy to do what you want. Get a pair of Ubiquiti radios like these:
Amazon.com: Ubiquiti Nanostation NSM5, 5GHz, 802.11a/n Hi-power 20 dBm Minimum, 2x2 MIMO AirMax TDMA PoE Station: Computers & Accessories
Connect one to your switch in the house, on the other end connect to a new...