Northern Virginia's Premier General Contractor
Custom decks, screen porches, sunrooms & home additions. Designed in 3D, permitted by us, and built to last across Fairfax, Loudoun & Prince William County.
Most Northern Virginia contractors leave you chasing updates. We don't. From the first 3D sketch to the final walk-through, one accountable Class A team handles design, permits, and the build, so you always know exactly what's next.
- 0Years building NoVA
- 0Avg. review rating
- 0Counties served
- AClass license, insured
One contractor.
The whole project.
B2B Division
Commercial construction property managers rely on.
We bring the same Class A discipline to condo communities and commercial clients: structural work, renovations and repaints delivered on schedule, so you look good to the board.
- Structural Framing & Drywall
- Condominium & HOA Renovations
- Commercial Painting
- Balcony & Exterior Rebuilds
See the vision become real.
Drag to reveal how a 3D concept turns into a built project. Every OSSA job starts as a plan you can see before we pour a footing.
Finished build
3D concept
Seven steps. Zero surprises.
One accountable team from the first sketch to the final walk-through, so you always know exactly what's next.
- 01
Discovery
A free on-site consultation where we listen to your goals, budget, and how you want to use the space before anything else.
- 02
Photorealistic 3D Design
Renderings on photos of your actual property, so you see it before we build it.
- 03
Written Proposal in 48 Hours
A line-item, fixed-price proposal with materials and labor together, so you know the real number upfront.
- 04
Permitting & HOA
We handle every county permit and HOA submission. You never chase paperwork.
- 05
Master Build
Precision execution by an accountable, in-house crew, never subcontracted strangers. We buy the materials.
- 06
Precision Detailing
Quality inspection and the finish work that separates good from flawless.
- 07
Handoff & Warranty
A final walk-through backed by a 2-year craftsmanship and 5+ year manufacturer warranty.
Built across Northern Virginia.
Homeowners across NoVA trust OSSA.
Google
★★★★★ 4.9
★★★★★ Top Rated
★★★★★ Screened & Approved
"The care your crew showed handling our personal items, both on the deck replacement and the painting of the upper-level balcony areas, was amazing."
"The manager gave the estimate in a professional manner and the team performed with excellence. They repaired my deck exactly as stated in their estimate. I will definitely use them again."
"Worked fast. Definitely took my needs into account and were very communicative throughout the project."
"I had drywall sagging from my ceiling. OSSA sent a skilled person who figured out the best way to shore it up and finished within a day. He even touched up the paint, which wasn't part of the contract. It all looks great."
"We were very impressed with the deck work OSSA did for us. The materials were ordered and delivered quickly, the crew showed up on time, did a very good job, and completed it quickly."
"Your team is very professional, and they do outstanding work. I would highly recommend them for projects."
Build now, pay over time.
Flexible financing makes your project achievable on your schedule. Ask us about plans during your free consultation.
Let's talk about
your project.
Tell us what you have in mind. We'll follow up with clear next steps, usually within one business day.
- (571) 619-9201
- inquiry@ossacg.com
- Centreville, VA · Serving NoVA