Turn your basement into the favorite room in the house.

Basement Remodeling in the DC Metro Area

Family room, guest suite, gym, home office, theater, wine room, or in-law apartment — Cornerstone has built every kind of basement across DC, Maryland, and Northern Virginia. We handle waterproofing, egress code, HVAC extensions, and finishes so your basement adds real livable square footage.

Investment Levels:

Level One — Up to ~700 sq ft, open layout, no bathroom — $70K+

Level Two — Up to ~1,000 sq ft, bedroom + guest bath + dry bar — $110K+

Level Three — 1,000+ sq ft, premium finishes, multiple bedrooms, wet bar — $150K+

Figures include design consultations, materials, and labor.