Sunroom & Four-Season Room in Bainbridge Island, WA

Sunroom & Four-Season Room in Bainbridge Island, WA

Looking for sunroom & four-season room in Bainbridge Island? Xion Build is a licensed, bonded, and insured home additions contractor delivering standout results for Bainbridge Island homeowners — start to finish, under one roof. Insulated, conditioned sunrooms usable year-round.

Bainbridge Island's wooded waterfront properties reward weather-tight envelopes, refined finishes, and crews who plan around ferry logistics and island access.

A home addition lives or dies on the connection to the existing house — foundation, framing, and rooflines have to marry seamlessly so the new space feels original.

What's included in your sunroom & four-season room

A typical sunroom & four-season room in Bainbridge Island can involve foundation work, roofline tie-in, insulation, finishes — and we put the full scope in writing so you know exactly what's covered before work starts.

From room additions and bump-outs to second stories and full primary suites, we handle structural engineering and permits up front so there are no surprises.

How much does a sunroom & four-season room cost in Bainbridge Island?

Most sunroom & four-season room projects in Bainbridge Island fall between $128,500 – $374,500, depending on the size of the space, the finishes you choose, and the condition of what's already there.

Because every home is different, we don't quote final numbers sight unseen. After a free in-home consultation you get a detailed, itemized estimate tied to your actual home additions project — so there are no surprises later.

Why Bainbridge Island homeowners choose Xion Build

Honest guidance on where to invest and where to save, so your budget goes toward what adds real, lasting value.

Transparent, written estimates with no hidden fees — you know what you're paying for before work begins.

Local crews who know Eastside permitting, inspections, and the way Pacific Northwest weather tests a home.

Our Bainbridge Island home additions process

Handoff includes a detailed walkthrough and a written warranty — not a crew that vanishes the moment the dust settles.

Each phase is inspected and documented, and we keep you updated so you always know what's happening and what's next.

It starts with a free, no-obligation consultation: what you want, the constraints, and a realistic budget range before you commit to anything.

Frequently asked questions

Related services in Bainbridge Island

We also serve these areas