Don't have enough space for your growing family or thriving business? Always dreamed of building the home or workplace that you want from scratch? If you need custom construction services or a custom home office, you've come to the right place. K-One Design & Build is a family-owned construction company that's based in McLean & Annandale, VA. Trust us to use 3D modeling software to help you visualize your space before we bring it to life.