Converting an existing cellar into a room can transform how you live in your home, creating extra living space without needing to add more with an extension. But subterranean conversions like this are complex, and there's one major basement conversion mistake that should be avoided at all costs — failing to address the issue of water.
If you want to get the most out of your basement conversion ideas, then ensuring your new space is waterproof and well-ventilated is essential. I asked industry experts what can happen if you get this crucial step wrong, and how to ensure you get it right.
