Sunroom Additions in Northern Virginia
Three-season rooms and fully conditioned four-season sunrooms — designed, 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 sunroom costs in NoVA (2026)
| Typical size | Footprint | Typical range |
|---|---|---|
| 12 × 12 ft | 144 sqft | $14K–25K |
| 15 × 15 ft | 225 sqft | $22K–39K |
| 15 × 20 ft | 300 sqft | $30K–52K |
Reference ranges of roughly $99–173 per sqft reflect typical Northern Virginia market pricing. A fully conditioned four-season room (insulation + HVAC) runs toward the top of each range; a three-season room toward the bottom. Every sunroom is quoted individually in writing 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 sunroom cost in Northern Virginia?
Typical 2026 Northern Virginia market pricing runs roughly $99–173 per sqft: a 12×12 room usually lands between $14K and $25K, a 15×15 between $22K and $39K, and a 15×20 between $30K and $52K. Four-season rooms with insulation and HVAC price toward the top of each range. Every project gets an individual written quote.
Three-season or four-season — what's the difference?
A three-season room is unconditioned — great from spring through fall at a lower cost. A four-season room is insulated, heated and cooled like the rest of the house, usable year-round, and adds conditioned square footage — at a higher cost. We build both and will price both options for you.
Do I need a permit for a sunroom?
Yes — a sunroom is an addition, so Fairfax, Loudoun, Prince William and Arlington counties all require building permits and inspections. We prepare the drawings, pull the permits, and coordinate every inspection.
How long does a sunroom take to build?
Timeline depends on permit review and whether the room is three- or four-season; once permits are issued, most builds take several weeks on site. Your written quote includes the schedule.
Get your sunroom quote today
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