K-One Design & Build / Northern Virginia
A home that fits
the way you live.
Custom homes, major additions, and whole-home renovations in McLean, Arlington, and Northern Virginia.
Bring your ideas to one experienced team for design, engineering, permitting, and construction.
Start with your ideas. No finished plans needed.
Your next chapter at home
What would make home
work better for you?
More room. A better layout. A new beginning. Start with what you want to change, and explore how K-One can help.
More space.
Same neighborhood.
Create room for family, work, and everyday living with an addition designed to belong to your home.
Explore home additions 02 / WHOLE-HOME RENOVATIONSA familiar home.
A fresh perspective.
Rethink the layout, connections, and finishes of your existing home through a coordinated major renovation.
Explore whole-home renovations 03 / CUSTOM HOMESYour priorities.
Your own design.
Bring a new home into focus, with thoughtful architecture and construction planned around your property and priorities.
Explore custom home buildingStill deciding whether to renovate, add on, or build new?
Tell us what you have in mindSee the work behind the words
Real homes. Thoughtful details.
Space to grow.
Explore a K-One second-floor addition and renovation.
See this project
Built around everyday life.
View a custom home project completed by K-One in Alexandria.
Explore this home
The details make it yours.
Explore the craftsmanship and details of a completed second-story addition and renovation.
See more of this homeFrom a K-One homeowner
"Their communication was amazing, they plan well, problem solve quickly"
The K-One difference
Beautiful design.
Grounded in how
homes are built.
Your designer and your builder should be working toward the same goal.
K-One brings design, engineering, permitting, project management, and construction together, so the ideas on paper stay connected to the realities of your home, budget, and site.
Meet the people behind K-OneDesign led by experience
Chief Designer Jina Moussavi brings an architectural education that includes the Architectural Association in London and decades of residential and commercial design experience.
Technical thinking from the start
Structure, site conditions, building systems, and the construction process are considered alongside the design, not left until the end.
Continuity through construction
The design, engineering, project management, and construction teams remain connected as the project moves from the first ideas to the finished space.
A comfortable place to start
You do not need all the answers
before reaching out.
Use our project survey to tell us about your home and what you are considering. We can take the next step from there.
Share your ideas.
Tell us where the project is and what you would like to change. It is fine if you are still exploring the possibilities.
We get in touch.
Our team reviews your inquiry and follows up to learn more about your priorities and the project you have in mind.
Explore the next step.
Together, we discuss whether K-One is a good fit and what further planning, information, or site review would be useful.
Tell us what you have in mind. Our team will follow up.
Commercial design + construction
A better space for your business, too.
Planning a commercial renovation or build-out? Explore K-One’s commercial work and tell us what your space needs to do.
Explore commercial constructionBefore you reach out
A few helpful answers.
Not sure where your project fits? Tell us what you know so far.
Ask us about your projectDo I need finished plans before contacting K-One?
No. You can reach out with an idea, a list of needs, or plans already in progress. Tell us where you are in the process so we can discuss an appropriate next step.
Does K-One handle design and construction?
Yes. K-One coordinates architectural design, structural engineering, permitting, project management, and construction. We focus on custom homes, major additions, whole-home renovations, and commercial construction.
Which Northern Virginia areas do you serve?
We work in McLean, Arlington, Great Falls, Vienna, Fairfax, Alexandria, and the surrounding Northern Virginia area. Include your project location when you contact us.
Can you help me decide between renovating, adding on, and rebuilding?
Start by telling us about your existing home and what you want to achieve. We can discuss the questions that need to be evaluated before choosing a direction. Feasibility and pricing require a project-specific review.
Let’s start with what matters to you
What would you love
about your next chapter at home?
More room for family. A layout that finally works. A home designed around you. Tell us what you have in mind.
Prefer to speak with us? Call (888) 327-5554
McLean · Arlington · Great Falls · Vienna · Fairfax · Alexandria
Custom homes · Major additions · Whole-home renovations · Commercial construction