Commercial drainage fails differently from residential. The volume is higher, the waste is greasier, the consequences of downtime are measured in lost trading rather than inconvenience, and in most jurisdictions there are records you are required to keep. The work is largely about staying ahead of it.
Need this looked at?
Tell us your town or ZIP code and what is happening. We route the call to an independent contractor covering that area.
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How a contractor actually diagnoses it
- They establish the use: kitchen, laundry, multi-unit residential and retail all load a line differently.
- They ask for the pumping and service history, which on a compliant site should exist as records.
- They inspect the grease trap or interceptor for separation, level and condition.
- They set a jetting and pumping interval based on observed loading rather than a generic schedule.
Three ways this actually fails
Grease trap overdue for pumping
A trap that is not pumped stops separating, and fat passes straight into the line. The most common commercial failure and the most preventable.
Kitchen line accumulation
Even with a working trap, a busy kitchen coats its lines. Jetting on a schedule keeps the diameter; cabling alone does not.
Multi-unit stack and lateral blockages
In apartment buildings the failure is rarely one tenant. Wipes and fat from many units accumulate in the stack and the lateral, and the symptom appears in the lowest unit.

Signs this is urgent rather than annoying
- Any backup in a trading kitchen
- A grease trap past its pumping date
- Waste water surfacing in a shared or common area
- A health inspection scheduled with no service records to show
What it costs
Published third-party ranges shown so you can sanity-check a quote. Not our prices, not an estimate, not a quote.
| Job | Published national range | Source |
|---|---|---|
| Commercial drain cleaning | varies with line size, access and schedule | industry practice |
| Hydro jetting | $350–$600 (avg ~$475) residential benchmark | Angi |
| Grease trap cleaning | varies by trap capacity and frequency | industry practice |
Published national ranges, shown for educational context only. These are not quotes and they are not our prices. Sources disagree with each other — that spread is real. Only the contractor who sees your line can price your job.
Full cost guide, by fixture and by method →
Questions people ask
How do I find commercial drain cleaning near me?
Call the number on this page and give us your town or ZIP code. We match it against partner coverage and connect you with an independent licensed contractor who works that area. We do not charge you anything — the contractor sets their own price.
How often should a grease trap be pumped?
It depends on trap size and volume, and many municipalities set a maximum interval by ordinance. Check your local requirement first — it is usually the binding constraint, not the trap's condition.
Do I need to keep records?
In most jurisdictions, yes. Pumping manifests and service records are commonly required to be retained and produced on inspection. Ask any contractor for documentation as standard.
Is jetting worth it over cabling for a commercial kitchen?
For grease, yes and it is not close. A cable restores flow through the deposit; a jet removes the deposit. On a kitchen line the difference shows up as months of extra interval.
Who is responsible in a multi-unit building?
Generally the owner or association for shared stacks and the lateral, and the tenant for their own fixtures — but leases vary and it is worth knowing before there is a backup.
Can this be scheduled outside trading hours?
Usually. Most commercial drain work is done overnight or before opening precisely to avoid closing the kitchen, and that is worth agreeing in advance.
Do you handle commercial calls?
Yes. Tell us it is commercial when you call, and whether there is a grease trap, so we route it to a contractor equipped for that rather than a residential one.
What does it cost?
Commercial pricing varies too widely with line size, access and schedule for any published range to be useful. The residential jetting benchmark, for context only, is $350–$600 (Angi).
