Basement Bathroom Addition in Renton, WA

Basement Bathroom Addition in Renton, WA

When Renton homeowners search for basement bathroom addition or a dependable basement finishing contractor near them, they want craftsmanship that lasts and a crew that communicates. That's exactly what we do. Add a bath with proper plumbing and ejector if needed.

Renton's mix of established and newer neighborhoods makes practical, value-driven remodels and roofing projects especially worthwhile.

We write scope in plain terms: what we'll do, the materials, the sequence, and how any surprises are handled if something is uncovered.

What's included in your basement bathroom addition

A typical basement bathroom addition in Renton can involve electrical, egress, insulation, framing — and we put the full scope in writing so you know exactly what's covered before work starts.

You get a single point of contact, licensed and insured trades, and clear communication from the first sketch to the final walkthrough.

How much does a basement bathroom addition cost in Renton?

Most basement bathroom addition projects in Renton fall between $39,000 – $97,000, 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 basement finishing project — so there are no surprises later.

Why Renton homeowners choose Xion Build

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

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

One dedicated point of contact coordinates the entire job, so you're never chasing subcontractors or wondering who's responsible.

Our Renton basement finishing process

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.

Design and material selections come next, so finishes, fixtures, and pricing are locked in before demolition — no surprises mid-project.

Frequently asked questions

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