Most DIY bathroom renovations cost upwards of $10,000.00—especially when they include new plumbing and installing a shower, tub, vanity, toilet, and flooring. Here’s how I did mine for under 9% of that figure. The guest bathroom needed an entire ‘gut remodel.’ There was no tub, shower or plumbing for it. And no flooring. Everything was outdated and old. This is the…