Crawlspaces 2 Basements, owned by Ted Tapparo, is the Denver-area leader in crawlspace excavation. Our proven expertise makes it safe and easy to create a full basement under your home. Call today for a free in-home estimate. Converting your crawlspace to a full basement is the most cost-effective way to expand your living space and increase the value of your home. Best of all, you can live comfortably in your home during construction. Crawlspace conversion is a safe and efficient method to dig a basement under your existing home. Our expert design and engineering partners guide the entire construction process. Your home is fully supported at all times and work is carefully monitored to ensure maximum safety. Once the excavation and concrete work are complete, your new basement can be finished on your timeframe.