Create your own house in the the next Skyrim DLC, Heartfire. Coming September 4th.
Description from the video (as Posted by Bethesda):
Create a living home.
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With this official add-on to The Elder Scrolls V: Skyrim, you can purchase land and build your own home from the ground up - from a simple one-room cottage to a sprawling compound complete with an armory, alchemy laboratory, stable, garden, and more. Use all-new tools like the drafting table and carpenter's workbench to transform quarried stone, clay, and sawn logs into structures and furnishings. Even transform your house into a home by adopting children.
Hearthfire, the next official game add-on for The Elder Scrolls V: Skyrim, will be available for download for 400 Microsoft Points on Xbox LIVE® on September 4.