Commercial Grease Interceptor Cost Planning Guide
Separate equipment, site work, installation, approval, and ongoing service instead of relying on a national total.
Use source examples only within their scope
Tampa's utility FAQ publishes local installation examples for stated equipment sizes. Site scope and other markets can differ.
Schier's 2025 list-price sheet publishes named product prices before installation. It is not a gravity-tank or installed-project survey.
Size from the adopted local method
Ask the local authority which sizing method and edition apply, then use the actual fixtures, flow, equipment, operations, and site conditions that method requires. Do not size a gravity interceptor from restaurant seats alone.
Separate project and ownership inputs
Equipment
Named model, rating, accessories, freight, warranty, and approval status.
Site work
Utilities, excavation, groundwater, shoring, base, access, traffic loading, and restoration.
Installation and review
Plumbing, venting, testing, design, permits, plan review, and inspection.
Ongoing service
Locally confirmed schedule, access, transport, disposal, records, repairs, and urgent work.
Financing, tax treatment, payback, lifespan, monitoring savings, and automatic-recovery savings were removed because they depend on facts and evidence outside a general interceptor cost guide.
Published Interceptor Cost Examples
These are named, dated examples—not national averages, guaranteed transaction prices, or complete project quotes.
| Source | Published example | Important limit |
|---|---|---|
| City of Tampa utility FAQ | About $4,000–$8,500 for a 750–1,500-gallon installation | Local example; site scope and other markets differ |
| Schier 2025 list-price sheet | GB-250 $6,729; GB-500 $14,854; GB-1000 $25,591; GB-1500 $32,627 | List prices for specific plastic hydromechanical products before installation; gravity tanks and transaction prices differ |
| Drain-Net monitoring products | Portable probe listed at $1,200; connected systems listed around $4,950–$5,850 | One provider's products, not a complete monitoring market survey |
The examples show why the equipment should be quoted by manufacturer, model, material, rating, accessories, freight, and warranty. They also show why a generic equipment range cannot be treated as a market fact.
Ongoing Pumping and Maintenance Cost
Cleaning frequency is determined by the local FOG program and actual accumulation, not tank size alone. Use written quotes and the required schedule to calculate the annual budget.
Illustrative arithmetic: every 4–8 weeks means approximately 6.5–13 visits per year. If a local written quote were $250–$500 per visit, the resulting arithmetic would be approximately $1,625–$6,500 per year. The visit prices are examples, not verified national rates.
Ask whether the service includes complete pumping, scraping or wash-down, solids removal, baffle and seal inspection, disposal, manifesting, documentation, and emergency response. A lower headline price may cover less work.
Frequently asked questions
How should a commercial interceptor be sized?
Use the method adopted and interpreted by the local authority with actual flow, fixtures, equipment, operations, and site information—not restaurant seats alone.
Can a manufacturer list price predict the project total?
No. It excludes or may differ from freight, tax, installation, permits, excavation, utilities, restoration, and transaction price.
What belongs in an ownership budget?
Use current written inputs for equipment, installation, authority review, service, transport, disposal, access, repairs, and urgent work.
Who sets the grease-trap rules for my property?
The authority serving the property sets the binding equipment, service, record, and enforcement requirements. Ask that authority for the current rule and keep the response with your service records.
Author: Grease Trap Locator Editorial Team
The Grease Trap Locator editorial team covers FOG compliance, grease trap maintenance, and commercial kitchen regulations across the US and Canada. Our guides are written for restaurant owners, facility managers, and food service operators who need practical, accurate information without the fluff.
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