48-year-old Thomas Graham is building a house in Texas pretty much by himself.

And although that job alone isn't remarkable, just imagine trying to put up a three-bedroom, two-bath ranch without any blueprints — and doing it in total darkness.

Thomas says he started dreaming of this shortly after the day he went blind at the age of 18, which was the same day his father was shot and died.

(READ the story and WATCH the video at CBS)