It took me most of the summer to build, working a few hours at a time. I can't imagine doing it in three weeks but maybe I'm just slow. I've been around construction a long time but I've never laid a brick in my life, before this. The biggest expense, tool wise, would have been the 10" wet saw I used for cutting the bricks, but I was lucky enough to borrow one from a friend. Altogether it cost maybe a grand so far, but I bought everything new. You could save money by scrounging used materials, I guess.