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Bath rough-in · Snohomish County
Service / 06 · Remodels & New Builds

Plumbing
your contractor
will love working with. Big Four Plumbing — remodel and new construction plumbing in Granite Falls and Snohomish County, WA.

Bathroom and kitchen remodels, ADUs, and ground-up new homes. We show up when promised, leave clean rough-ins, and our finish work is the kind that passes inspection without a callback.

  • BuildersPartnerships welcome
  • SchedulesHit, not missed
  • InspectionsFirst-time pass focus
Rough-inClean, square, code-tight
FinishPicky to the millimeter
PermitsPulled & closed for you
BuildersTrusted local partners
What we do / 01

From a guest bath swap
to the whole house.

We work directly with homeowners and as a sub for local builders. Either way, you get the same crew start to finish.

01

Bathroom remodels

Full guts, layout changes, and curbless walk-in showers. We rough in to the millimeter so your tile guy is happy.

  • Curbless & linear-drain showers
  • Free-standing tub installs
  • Toilet relocations
02

Kitchen remodels

Sink relocations, pot fillers, instant hot, gas range conversions. We coordinate with cabinet makers so it all just works.

  • Sink & island reconfiguration
  • Pot filler & filtered water
  • Gas range / cooktop install
03

ADUs & basement suites

Adding a unit? We size the new water service, route DWV, and coordinate with your designer to keep code-clean and efficient.

  • DWV layout & venting
  • Water service upsizing
  • Separate metering options
04

New construction

Ground-up homes for local builders. Full underground, rough-in, finish, and gas. Schedule we hit, paperwork we close.

  • Underground & sewer stub
  • Rough-in to plans
  • Finish & appliance hookup
05

Whole-house repipes

Old galvanized or polybutylene? We swap to PEX or copper, with minimal drywall damage and a working bathroom every night.

  • PEX & copper repipes
  • Phased so the house stays livable
  • Pressure tested & permitted
06

Fixture & finish install

Already have the tub, faucets, and toilets picked out? We install Moen, Kohler, and high-end fixtures right the first time.

  • Wall-hung & concealed-tank toilets
  • Thermostatic shower systems
  • Free-standing tub fillers
How we work / 02

Predictable, the way
your contractor needs it.

Four phases. Clear handoffs. No surprises.

  1. 01

    Walk-through & bid

    We meet on site, look at what's there, and quote based on the plans. Real numbers, not "we'll figure it out as we go."

  2. 02

    Underground & rough-in

    Drains, vents, and supply lines stubbed and pressure-tested before drywall closes. Clean, square, easy for the inspector.

  3. 03

    Finish & trim

    Toilets, faucets, fixtures, appliance hookups. We coordinate with your tile, cabinet, and electrical trades so nothing collides.

  4. 04

    Final inspection & warranty

    We meet the inspector, close the permit, and back the work in writing. You get a clean folder of paperwork at the end.

FAQ / 03

Remodel questions.

Want to talk it through? Call (360) 488-8553.

Will you work with my GC, or do I hire you direct?

Both. We're happy to sub for your general contractor or work directly with you as the homeowner. We've got a list of local GCs we partner with if you need a referral.

How early should I bring you in on a remodel?

Earlier is better. A 30-minute conversation during the design phase saves thousands during construction. We're happy to look at plans before you commit to anything.

Do you handle permits?

Yes. We pull the plumbing and gas permits, coordinate inspections, and close them out at the end of the project.

Can the bathroom be unusable during a remodel?

For repipes and whole-house work, we stage so you have a working toilet and shower every night. Single-bath remodels are obviously offline during the work — we'll let you know exactly which days.

Can I supply my own fixtures?

Absolutely. Just check with us before ordering — we can spot a fixture that won't pass code or doesn't match the rough-in before it's a $400 paperweight.

Free quote / 04

Tell us about the project.

Plans, sketch, or a Pinterest board — whatever you've got. Send the form or call (360) 488-8553.

  • Phone(360) 488-8553
  • Address23100 135th St NE, Granite Falls, WA 98252
  • HoursMon–Sat 7am–7pm
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