Home Additions in Northern Virginia
Ground-floor family rooms, primary-suite additions, and second-story build-ups — engineered, permitted, and built by one in-house crew. Serving Fairfax, Vienna, McLean, Arlington, Springfield and surrounding NoVA communities.
✔ Licensed VA DPOR Class A contractor · ✔ 12+ years, 400+ NoVA projects · ✔ Free video estimate in 24 hours
What a home addition costs in NoVA (2026)
| Type | What's included | Price / sqft |
|---|---|---|
| Ground-floor, basic | Standard finishes, slab or crawl foundation, simple roofline | $150–200 |
| Ground-floor, mid | Better finishes, code-compliant tie-in, roofline matched to the house | $200–280 |
| Ground-floor, high-end | High-end finishes, complex structural tie-in | $280–430 |
| Second-story addition | Structural reinforcement of the level below, stairs — the most complex build | $250–550 |
Pricing reflects current Northern Virginia market rates. For homes built before 1990 we recommend budgeting a 15–20% contingency for hidden conditions. Every addition is quoted individually after an engineering review.
Two easy ways to get your price
📹 Free video estimate $0
Take a short phone video of the space and send it to us. You'll have an accurate estimate within 24 hours — no visit, no pressure.
📐 On-site measurement $100
We come out, measure, and confirm scope in person. The $100 is fully credited toward your project when you sign with us.
Recent NoVA projects by our crew
All photos are NWP projects, published with client permission. See the full project gallery →
Why hire a licensed general contractor?
Remodeling work that touches structure, electrical, plumbing, or the building envelope requires county permits and passed inspections in Northern Virginia. Working with a licensed, insured general contractor means:
- Permits and inspections handled — the GC files the paperwork, schedules county inspections, and stays on the hook until everything passes.
- Insurance that protects your home — licensed contractors carry coverage, so a mishap on site isn’t your financial problem.
- One contract, one point of accountability — carpentry, electrical, plumbing, and finishes run on a single coordinated schedule instead of you juggling separate trades.
- Work that holds its value — permitted, inspected work protects your home’s resale value and avoids surprises at appraisal or sale.
See how we run projects end to end on our general contracting page.
FAQ
How much does a home addition cost in Northern Virginia?
Typical 2026 Northern Virginia rates: ground-floor additions run $150–430 per sqft depending on finish level and structural complexity; second-story additions run $250–550 per sqft. A 400 sqft family room addition typically lands between $60K and $170K. Every addition is quoted individually after an engineering review.
How long do addition permits take in Fairfax County?
Plan on 2–4 months for plan review and permits on a larger addition in Fairfax County; Loudoun and Prince William vary. We prepare the drawings, submit the application, and coordinate every inspection so you don't have to.
Do you handle design and engineering?
Yes — we work design-build: drawings, structural engineering, permits, construction, and inspections under one roof, with one crew and one point of contact.
Is an addition a good investment?
Build an addition for how your family lives, not for resale — industry resale data shows additions recoup a modest share of their cost at sale. If resale value is your main goal, exterior projects like siding and roofing hold value better; we're happy to talk through both — our team includes a licensed real estate agent (Realty Aspire).
Get your addition quote today
Chat with us 24/7 (English · 中文 · Español), send photos, and get a ballpark on the spot.
💬 Chat now at nwp2015.com 📞 703-485-6378