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New construction · Spokane and North Idaho

Commercial construction in Spokane Valley, WA

Ground-up commercial buildings, tenant improvements, apartments and public prevailing-wage projects, plumbed by crews led by foremen and bid from your plans and specifications.

4.8★★★★★4,000+ Google reviews
Call 24/7(509) 535-5946
For general contractors
Bid on your plans
Starting prices
  • Ground-up buildingsBid on plans
  • Tenant improvementsSurvey, then bid
  • ApartmentsBid on plans
  • Public projectsPrevailing wage
Request a bid
Send plans, specs, addenda, the schedule and the bid due date.
1967In business since
TITenant improvements, surveyed first
Med gasMedical gas installations
WA + IDLicensed in both states

What is included

Built for commercial work.

  • A written scopeEvery bid says what is included, what is excluded and what the price assumes.
  • Food serviceGrease interceptor sizing and placement, indirect waste for food equipment, floor sinks and drains.
  • Medical and dentalMedical gas systems and the plumbing that medical and dental offices need.
  • Backflow preventionAssemblies installed to code on the water service and on equipment connections.
  • Occupied buildingsAfter-hours or phased work, with shutdown windows planned with you in advance.
  • A foreman on siteA foreman leads each crew, works the punch list and reports to our superintendent.
Two people reviewing plumbing plans at a table beside a Gold Seal hard hat
Bidding from the plans

Know the signs

Work we bid.

From one tenant space to a high-rise office tower.

Ground-up buildings

Offices, retail, restaurants and light industrial. Past projects include Spokane’s Rock Pointe Tower and the Coeur d’Alene Fred Meyer.

Tenant improvements

Fixtures moved, restrooms and break rooms added, new waste and supply for equipment, and existing work brought to code.

Apartments

Apartment buildings and condominiums, with the shared risers, mains and unit-to-unit repetition they bring.

Public projects

Public work at prevailing wage, with the intent and affidavit paperwork filed.

How it works

Survey. Bid. Build. Close out.

New buildings bid from the plans. Existing buildings get a site survey first, because existing conditions are where the surprises are.

  1. 01

    Survey

    For work in an existing building, we look at the conditions before we price.

  2. 02

    Bid

    A written bid with the scope, exclusions and assumptions spelled out.

  3. 03

    Build

    Crews led by a foreman, on your schedule, around your hours where the building is occupied.

  4. 04

    Close out

    Inspections passed and the punch list worked to done.

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Gold Seal Mechanical GOLDSSM799MG · Gold Seal Plumbing GOLDSSP771K6 · Gold Seal Rooter GOLDSSR772LF · Idaho PLB-C-8717

Questions

Commercial construction, answered.

Answers from licensed plumbers. Still unsure? Call (509) 535-5946, 24 hours a day.

How do I submit a commercial bid request?
Send plans, specifications, the schedule, any addenda and the bid due date through our bid request page. For work in an occupied building, note access limits and working hours early; they affect the price and belong in the bid, not a change order.
What is tenant improvement plumbing?
Changing an existing building’s plumbing for a new tenant or use: moving fixtures, adding restrooms or break rooms, running new waste and supply for equipment, and bringing existing work up to code. We survey the existing conditions before we price it.
Do you bid public prevailing-wage projects?
Yes. Gold Seal Mechanical’s construction division takes public prevailing-wage work and files the prevailing wage intent and affidavit for it.
Can you work around our operating hours?
Yes. Tenant improvements in a live retail or medical space often need after-hours or phased work so the business keeps running, and we plan shutdown windows with you in advance.
What commercial projects has Gold Seal plumbed?
Ground-up and tenant work across Spokane and North Idaho, including Spokane’s Rock Pointe Tower and the Coeur d’Alene Fred Meyer, along with restaurants, strip malls, retail stores, dental offices and apartment complexes.

Related services

The same company handles every pipe on the property, from the water meter to the sewer main.

Bid on plansNew home plumbingCustom homes, multi-family and subdivisionsPrices and details → Bid on plansRemodel plumbingKitchens, baths and additionsPrices and details → From $130Backflow testing & repairYearly tests, repairs and new assembliesPrices and details → From $284Gas linesLeak checks, repairs and new linesPrices and details →

Bidding a job? Send us the set.

Commercial plumbing bids for general contractors across Spokane and North Idaho.

Call 24/7 (509) 535-5946
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