Roofline that matches
Same pitch, same overhang, same materials. Nothing announces itself.
Design-Build Firm · Northern Virginia
Additions in Northern Virginia.
More house, without moving. Built to feel original.
Start Your Project→
Alex BautistaFounder
Why Homeowners Choose GiGi
Additions are where craft is most visible.
Roof lines that don't match. Windows that don't line up. A new wing that reads as bolted on. Bad additions ruin houses. Ours read as if they were always there.
01
Additions that match the original house
Rooflines, siding, window heights, trim profiles. Nothing announces itself as new.
02
Structural engineering in-house
Every load calculated, every beam sized properly, every permit signed off.
03
Zoning and permit navigation
Setbacks, lot coverage, HOA: we handle the paperwork so your addition actually gets built.
04
One team from foundation to finish
Same crew from footings to interior trim. The addition finishes as one coherent room, not a Frankenstein.
What Makes a Great Addition
The room that reads as always-there.
Interior flow that connects
New hallway lines up with the old. Floors run continuous. Ceiling heights coordinate.
Natural light where you want it
Windows sized to catch morning sun. Skylights where the roof allows. New rooms that don't feel underground.
Systems that don't announce themselves
HVAC extended and rebalanced. Electrical off the same panel. Plumbing routed so the new room lives like the rest of the house.
Full-Scope Addition Services
Home Addition Services Throughout Northern Virginia.
Second-Story Additions
Second-Story Additions
Full second-story builds on ranch homes and split-levels. Structural engineering, temporary weather protection, seamless siding integration.
Rear & Side Bump-Outs
Rear & Side Bump-Outs
Kitchen expansions, family room additions, primary suite bump-outs. New footprint, matched exterior.
Sunrooms & Four-Season Rooms
Sunrooms & Four-Season Rooms
Screened, glass-enclosed, or fully conditioned. Built to be used year-round, not just in September.
In-Law Suites
In-Law Suites
Ground-floor bedroom, full bath, sometimes kitchenette. Aging-in-place options built in.
Detached Structures
Detached Structures
Garages, guest houses, workshops, ADUs where zoning allows.
Selected Project
From closed 1990s family room to hosting-scale great room.
A Northern Virginia colonial's original family room sat sealed behind the load-bearing wall from the kitchen: wall-to-wall beige carpet, a single sliding door onto a small rear deck, a ceiling fan overhead, and a compartmentalized kitchen visible only through a narrow doorway. Rebuilt as a paired rear addition and kitchen bump-out: the load-bearing wall came down, the rear elevation extended out to hold the great room, and the kitchen opened onto a waterfall island with seating for five. Wide-plank light-oak hardwood throughout, three glass pendants over the island, French doors banking the rear elevation onto an expanded deck. Living, dining, and cooking now read as one continuous hosting-scale volume.
Drag the handle to compare
Before: closed family room, kitchen sealed behind the load-bearing wall
Drag the handle to compare
After: open great room, waterfall-island kitchen, French doors to expanded deck
The Process
Our Northern Virginia Additions Process.
Same five steps, with permitting and structural engineering added up front.
01
Conversation
Walk the property, discuss what you want to add and why, check setbacks and HOA rules.
02
Design
Architectural drawings, structural engineering, exterior renderings that match the existing house.
03
Estimate
Fixed-price proposal covering everything through permit sign-off.
04
Build
3–6 months typical for a large addition. Weather protection for the existing house during construction.
05
Handover
Warranty, permit paperwork, product binder.
What Addition Clients Say
The house that finally has room.
4.9 out of 5 · 90+ reviews
Reviews from homeowners whose homes we've expanded.
FAQ
Questions about your
additions.
Straight answers, no marketing dodges.
Yes. Matching siding species, mortar color, roof pitch, and window profiles is what separates a good addition from a bad one. We invest the design time to get it right.
Design and permits: 8–16 weeks. Build phase: 3–6 months depending on size and complexity.
Yes, from the initial variance request to the final inspection. We know Fairfax and Prince William County zoning offices by name.
Where We Work
Additions Across Northern Virginia.
Additions projects across the towns and neighborhoods we work in. Every town below has a dedicated page with local context: property types, common home eras, permit nuances.
Start Your Addition
Every good addition starts with a site visit.
We'll walk your property, check zoning and setbacks, listen to what you want to add, and follow up with a design proposal.
Explore More Remodeling Services
See what else we can build.
Additions is one of six disciplines under the same roof, same team, same standard. If your project blurs into another category, or you already know it will, start with any door.
From the Journal
Additions thoughts, from our team.
The journal is coming soon — thoughts on additions, materials, process, and the small things that make a big difference.
Read the Journal