Grease Trap & Interceptor Installation
Sizing, permitting and installing the right grease trap or interceptor for your kitchen.
Installing a grease trap is not a plumbing afterthought. It is a permitted, sized-to-code job that your sewer district signs off on before you open. A vetted installer starts by sizing the unit to your fixture count and drainage fixture units against the local FOG code, then advises whether you need a compact indoor hydromechanical trap under the sink line or a below-ground outdoor gravity interceptor for a higher-volume kitchen. From there they pull the plumbing permit, coordinate plan-check with the city, set the unit, tie in the vents and sample box, and walk it through the sewer-district inspection so the paperwork is clean the day you open. Price ranges vary widely by unit and site: roughly $3,000 to $7,500 for a typical gravity trap, and $15,000 to $45,000 for a below-ground interceptor with excavation. Those are regional ranges, not a quote.