During the process, make sure your basement pro installs waterproof walls and enough insulation to keep everyone warm in the winter and cool in the summer. According to our basement remodeling cost estimator, the average price to remodel a basement is $16,733. Needless to say, this price can fluctuate quite a bit.We have seen basement renovations go as high as $35,000 and as low as $1,000.uring the process, make sure your basement pro installs waterproof walls and enough insulation to keep everyone warm in the winter and cool in the summer. According to our basement remodeling cost estimator, the average price to remodel a basement is $16,733. Needless to say, this price can fluctuate quite a bit.