Hannegan Construction is a locally owned and operated residential whole-home remodeling company serving our neighbors in DC and Northern Virginia.
Whether you want to lower an existing basement to gain headroom, create a brand-new basement from a crawl space, or dig out a full lower level in an older home, our experienced crew is ready to get to work.
If you’re considering adding livable square footage to your home, our basement excavating service can help you unlock the hidden potential beneath your feet. At Hannegan Construction, we provide fast, flexible basement excavation work for homeowners across Washington, DC and Northern Virginia.
In urban areas like DC, where space is tight and lot sizes are limited, digging down is one of the smartest ways to increase usable space without altering your home’s footprint. Basement excavating can allow for:
Additional bedrooms or guest suites
Home offices or studios
Rental units or ADUs with private entrances
Media rooms, gyms, or play areas
More headroom and natural light in existing basements
We also handle walkout basement excavation and underpinning, making your lower level feel like a natural extension of your home—not just a dark, unused storage space.
We specialize in practical, budget-friendly solutions. Our team is known for fast turnarounds, flexible scheduling, and a hands-on approach that keeps your project moving. We’ve completed excavation and basement expansion projects in narrow DC rowhomes, Reston colonials, and everything in between.
Our basement excavating service includes:
Soil removal and site prep
Foundation underpinning (if needed)
Crawl space-to-basement conversions
Walkout basement digging
Waterproofing and drainage integration
Concrete slab prep and pour
If you’re ready to expand your home without adding on, our basement excavating service is a smart, efficient way to gain more space. Based in Reston and serving all of Northern Virginia and DC, Hannegan Construction is here to help you dig deeper—literally.
📞 Call today at 703-899-5629 to click here schedule your free estimate online right now.
