
Additions, Decks & Exteriors
Additions, Decks & Exteriors That Add Real Space
Home additions, decks, covered porches, siding, garages, and outbuildings — built to match your home and hold up to Eastern Washington weather.
When your house runs out of room — or when the exterior needs to do more work — Gitter Done Construction builds the addition, the deck, the garage, or the siding replacement that solves the problem and looks like it was always meant to be there. We've been doing exterior and addition work across Lincoln County and the greater Spokane area since 2009, and we know how to detail structures that handle our freeze-thaw climate and our wind without coming apart at the seams.
Additions and exterior structures are their own discipline. The connection to the existing building has to be right — structurally and weathertight. The roofline has to integrate, not just be tacked on. The siding and trim have to match. We think through these details in the scoping phase, not after the framing is up, which is why our additions look like additions and not afterthoughts.
What we build
- Home additions & bump-outs — extra bedrooms, expanded kitchens, flex rooms
- Decks & covered porches — wood, composite, and covered structures with proper footings
- Siding install & replacement — board-and-batten, lap, cedar, and engineered siding
- Garages, shops & outbuildings — detached and attached, sized for how you work
- Exterior structures — covered entries, pergolas, and outdoor living structures
- New window & door openings — structural headers, framing, and exterior finish
For homeowners
An addition is one of the bigger investments you can make in a home you plan to stay in. We scope it carefully — looking at how the addition connects to the existing structure, how it drains, how it's detailed at every exterior joint — because exterior work that isn't done right becomes a leak problem or a rot problem faster than anything else in a house.
Decks and covered porches are a different kind of project: they're about how you use your property and how it feels to be outside on it. We build structures that are sized right for the use, properly footed for frost depth, and detailed to shed water rather than hold it. A deck built right in Eastern Washington will outlast one that was built in a hurry by years.
For businesses
Commercial garages, shops, equipment storage buildings, and exterior additions to existing commercial properties are work we do regularly. We handle the permitting, the structural engineering coordination as needed, and the full exterior build — including concrete approaches and foundations — so you have one contractor to deal with. Learn more about our commercial work.
Additions
Structural additions that tie into the existing home properly and look like they belong.
Decks & Porches
Wood and composite decks and covered porches built to handle frost and weather.
Siding
Siding replacement and installation — lap, board-and-batten, cedar, and engineered.
Garages & Shops
Detached and attached garages and outbuildings sized for how you actually work.
Common questions
Do you build decks and covered porches?
Can you match an addition to my existing home?
Do you replace siding?
Related: New Construction · Concrete & Foundations · Roofing & Gutters
Ready to add on or renovate the exterior?
Tell us what you want to build — we'll get you a free quote with a clear scope and timeline within one business day.