Bathroom Remodeling in Sammamish, WA

Bathroom Remodeling in Sammamish, WA

Owner-operated bathroom remodels for Sammamish homeowners — from quick refreshes to full gut renovations across Trossachs, Klahanie, Pine Lake, and the Plateau. Licensed, insured, and 30–35 minutes northeast via I-405.

City of Sammamish permits Free in-home estimates Licensed & insured Owner-operated

A Local Contractor Who Actually Knows Sammamish Bathrooms

Sammamish's housing stock is what shapes every remodel decision here. Sammamish is one of the newest cities in King County, and the housing reflects that — predominantly 1990s through 2010s construction in master-planned subdivisions like Klahanie, Trossachs, and the Pine Lake area. Most homes are 3,000–5,000+ square feet with engineered framing, modern electrical service, and large open floor plans. Most projects here are high-end finish upgrades or primary suite expansions rather than gut overhauls.

Sammamish is roughly a 30–35 minute drive northeast of our Kent base via I-405 and SR-202. That proximity matters — when materials show up damaged or an inspector needs a same-day correction, we are not driving in from Seattle.

Talk to Us About Your Project

What's Included

Everything Your Bathroom Remodel Needs — Done Right

Bathrooms are unforgiving — water, ventilation, and tight clearances all have to work together. Below is what's typically included in a Sammamish bathroom project; we tailor every estimate to your home.

Tile & Stone

Floor tile, large-format wall tile, custom shower niches, slab walls, and proper substrate (Schluter, cement board) under everything.

Vanities & Cabinetry

Stock, semi-custom, and custom vanities. Wall-mounted, single-sink, and dual-vanity layouts with soft-close hardware.

Plumbing

Toilet, sink, shower valve, and tub installation. Relocating drains, replacing old galvanized supply lines, and rough-in for new fixtures.

Fixtures

Faucets, showerheads, body sprays, handheld wands, tub fillers, towel bars, and hardware — coordinated with your aesthetic.

Lighting

Vanity sconces, recessed lighting, decorative pendants, and dimmer-friendly switching. Always to code, always GFCI-protected.

Waterproofing

Schluter Kerdi, Wedi, or hot-mopped pans. Proper waterproofing under tile is the difference between a 5-year and 30-year bathroom.

Ventilation

Exhaust fans sized for the room, vented to the exterior (not the attic), with humidity-sensing controls when requested.

Glass & Doors

Frameless shower glass, custom hinged or sliding panels, and barn-door hardware. Measured and templated after the tile is set.

Permits & Inspections

We pull City of Sammamish permits when plumbing or electrical work is involved, and we schedule the rough-in and final inspections.

Large format tile with free stand tub and walk in shower
Tub on tile shower with wide Niche and LED miror

Sammamish Permits & Considerations

What to Know Before You Start

The City of Sammamish requires a building permit any time a bathroom remodel involves plumbing relocation, electrical changes, or structural alterations. A like-for-like fixture swap (same toilet location, same vanity footprint) often doesn't require a permit — but moving a shower drain, adding a circuit, or changing the layout always does.

We pull every required permit through the Sammamish Permit Center, coordinate the rough-in and final inspections, and keep documentation in your project file. Bathroom permits matter especially at resale, since inspectors and appraisers flag undocumented work.

  • Permits filed with the City of Sammamish under our license, not yours
  • Rough-in and final inspections scheduled and met on-site
  • Sammamish has stringent stormwater and critical-area regulations — relevant on any addition or footprint change
  • Klahanie and Trossachs HOAs have specific architectural review processes we navigate as part of every project
  • Permit copies handed to you at close-out for resale records

Honest Pricing

What a Bathroom Remodel Typically Costs in Sammamish

Sammamish sits in the premium tier of the Puget Sound bathroom market. Below are the typical ranges we see — actual numbers depend on shower size, tile selection, vanity choice, and whether plumbing moves.

Refresh
$18,000 – $28,000

High-end vanity, premium tile, designer fixtures, integrated lighting. Same layout.

Mid-Range Remodel
$28,000 – $48,000

Custom tile work, frameless glass shower, dual vanities, heated floors, premium fixtures and lighting.

Full Primary / Custom
$48,000 – $75,000+

Full primary suite remodel, expanded footprint, steam shower, freestanding tub, designer tile, heated floors, integrated tech.

Ranges are typical Sammamish bathroom project costs and don't include unforeseen issues (rot under old tile, galvanized supply line replacement) — we flag those in writing the moment we find them.

How We Work

Five Steps. No Surprises.

A clear process that keeps your Sammamish project on schedule, on budget, and easy to follow week-to-week.

1

Consultation

We come to your home, measure, listen to what you want, and talk through budget and timeline honestly.

2

Design & Estimate

Layout, material selection, and an itemized written estimate. You approve every line before we order.

3

Permits

We pull the City of Sammamish permits and schedule inspections so you don’t have to think about it.

4

Build

Demo, plumbing, electrical, finish work — done by our crew, not subbed out to strangers.

5

Walkthrough

Final inspection, punch-list with you on-site, permit close-out, and a written warranty handed over.

Sammamish Bathroom Remodel FAQs

Questions Sammamish Homeowners Ask Us

Do you pull permits in Sammamish, WA?
Yes. We pull all required permits through the Sammamish Permit Center for bathroom remodels that involve plumbing, electrical, gas, or structural work. We handle the application, inspection scheduling, and code compliance so you don't have to.
How long does a bathroom remodel take in Sammamish?
Most Sammamish bathroom remodels run 3 to 6 weeks of active construction. A straightforward hall-bath update wraps in 2–3 weeks. Primary bath remodels with custom tile work, frameless glass, and layout changes typically take 5–7 weeks, plus 1–3 weeks of design and permitting before that.
What does a bathroom remodel cost in Sammamish, WA?
Most Sammamish bathroom projects fall between $18,000 and $75,000. A typical mid-range hall bath with a new tile shower, vanity, and fixtures usually runs $28,000–$48,000. Primary suite remodels with dual vanities, frameless glass, and heated floors trend higher. You'll get an itemized estimate.
Do you work in Klahanie and the Trossachs?
Yes — Klahanie and the Trossachs are regular work areas for us, along with the rest of Sammamish. Sammamish is roughly a 30–35 minute drive northeast of our Kent base via I-405 and SR-202, Scheduling site visits and the build itself is straightforward.
Are you licensed and insured in Washington?
Yes. Big Build Construction is fully licensed, bonded, and insured to work in Washington State, including Sammamish. All work is performed to code and inspected where required.

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Ready to Start Your Sammamish Bathroom Remodel?

Free in-home estimates, itemized pricing, and a real human answering the phone.