Most restaurant owners get hit with grease trap installation cost that runs 40-60% higher than equipment prices alone. You see a $600 trap and budget $800, then face a $2,100 bill. Key Takeaways: Under-sink grease trap installations range from $800-2,400 including equipment and labor In-ground grease interceptor projects cost $3,000-15,000 with excavation representing 30-50% of … Read more