Plumbing · Calgary
Commercial plumbing contractors in Calgary.
Tenant improvements, washroom retrofits, restaurant rough-ins. Post the job once and the reviewed plumbing crews who cover your area reply.
Free for subcontractors · Reviewed by hand · Commercial only
About this trade
Commercial plumbing in Calgary touches everything from a single washroom retrofit to a full restaurant kitchen rough-in. The crews that handle commercial well are a smaller group than the ones doing residential service work — they understand stack constraints in occupied buildings, gas piping, and grease interceptor sizing.
Syndex sends your request to reviewed commercial plumbing members, and each replies for themselves. You see who said yes, and their WCB letter date where we hold one.
Common project types
What Calgary GCs hire plumbing subs for.
Tenant improvements
Office TI plumbing scope: kitchenettes, washroom retrofits, drain stack ties.
Restaurant kitchen rough-in
Full kitchen plumbing: floor drains, sinks, grease interceptor, gas lines for cooking equipment.
Washroom retrofits
Multi-stall washroom modernization, accessible washroom installs, lavatory and toilet replacements.
Grease & oil interceptors
Sizing, installation, and code-compliant venting. Coordination with city sewer service.
Hot water systems
Commercial water heater swaps, recirculation loops, mixing valves.
What to know when hiring
Four things GCs check before they sign.
Verify journeyman or master plumber on site
Calgary commercial plumbing scope generally requires a journeyman or master on each job. Ask who's leading the crew — not just installing.
Backflow prevention sign-off
Most commercial water connections need backflow prevention testing. Confirm the sub can test and certify, or has a contact who can.
Stack work in occupied buildings
Drain and vent work in an occupied multi-tenant building needs after-hours coordination. Confirm the sub has done similar before quoting.
Gas piping scope vs HVAC
Commercial gas piping can sit with plumbing or HVAC depending on local convention. Clarify scope split before both subs price the same work.
How Syndex works for this trade
Post the job once with the scope, the location and the start date. It goes to every reviewed plumbing member who covers that part of Calgary, and you see the ones who reply Yes or Call me, with their contact details and, where we hold one, the date on their WCB clearance letter.
Plumber and gasfitter are compulsory trades in Alberta, and in Calgary the plumbing contractor pulls the plumbing permit. Ask who will before you award the work.
Frequently asked
Plumbing hiring — questions GCs ask first.
- Can a plumbing subcontractor do the gas piping?
- Only with a certified gasfitter. Gasfitter is a compulsory trade in Alberta, and a Calgary gas permit needs a qualified gasfitter. Put gas in the request and ask who will hold the permit.
- Can I get an emergency plumbing crew for a tenant flood?
- You can post an urgent request. Whether a crew can come today depends on their day, and the replies tell you who can.
- Does Syndex cover sewer line and underground work?
- Put underground in the scope. Crews who do not do it will not say yes, so the replies you get are from the ones who do.
- Are the plumbers on Syndex residential or commercial?
- Commercial. Syndex is commercial-only — no homeowner service work.
Guides
How to get a WCB Alberta clearance letter
For subcontractors: how to request a clearance on your own account, the screen where most people get stuck, how long a letter covers you, and what a denial means.
Read the guideWCB personal coverage for owners and directors in Alberta
If you own the company, WCB does not cover you unless you buy personal coverage. What it pays, what it costs in your trade, and why a GC hiring a small crew cares.
Read the guideCGL insurance for subcontractors: what a GC will ask for
What commercial general liability insurance covers, what it leaves out, and the four things a GC will ask about it before you start on a commercial job.
Read the guideGetting paid on a commercial job in Alberta: prompt payment, holdback and liens
The deadlines Alberta's Prompt Payment and Construction Lien Act puts on every link of the payment chain, what a GC has to do if the owner does not pay, and the lien deadline you cannot fix later.
Read the guideWhat a GC checks before hiring a subcontractor in Calgary
The seven things a general contractor checks before letting a new trade onto a commercial site in Calgary, which of them are the law, and how a sub can have all of them in one folder.
Read the guideT5018: reporting what you pay subcontractors
Who has to file a T5018, what goes on the slip, the GST rule people get wrong, and the deadlines and penalties, from the CRA's own pages.
Read the guideConstruction hours and the noise bylaw in Calgary
The hours Calgary's Community Standards Bylaw allows noisy work, the sound limits near homes and downtown, the fines, and how to get a noise exemption permit for night work.
Read the guideHow to find commercial work as a subcontractor in Calgary
Public work is advertised and private work is not. How to see which GCs are bidding on public jobs, how to get onto the bid lists for private ones, and what to have ready before you call.
Read the guideSubcontractor or employee? How the CRA and WCB decide
Calling someone a sub does not make them one. The CRA's six factors, WCB Alberta's own test, and a quick check for a crew lead paying helpers.
Read the guideGST for subcontractors in Alberta
Alberta charges 5% GST and nothing else. When the $30,000 small supplier test makes you register, why registering early pays, and what a GC needs on your invoice.
Read the guideWhat to put in a subcontract: a checklist for Alberta trades
A verbal deal can be a contract in Alberta, but it settles nothing when memories differ. What to find in a subcontract before you sign it, and how to turn a phone call into a record.
Read the guideCity of Calgary business licence for contractors
Who needs a Calgary contractor licence, the 2026 fees, the surcharge for crews based outside the city, and the renewal trap that makes you start over.
Read the guideHow to get a COR or SECOR in Alberta
What a COR proves, when a SECOR is enough, the four steps from Certifying Partner to certificate, and how to keep it from expiring.
Read the guideHow to register a construction lien in Alberta
Step by step: the deadline, what goes on the Statement of Lien and the affidavit, what it costs, the overclaim rule, and what an owner can do once it is on title.
Read the guideHow to open a WCB Alberta account as a contractor
Who has to register, the 15-day rule when you hire, the $200 that unlocks your first clearance letter, what it costs by trade, and the annual return.
Read the guideCommercial building permits in Calgary: how long they take
The City's published targets and actual averages for commercial permits, why incomplete applications are what makes them slow, and who pulls which permit.
Read the guide
Ready to post?
See who says yes.
Post the job once. It goes to the reviewed members in that trade who cover your area, and you see the ones who reply.