Sump Pit Installation
Excavate and install a new sump pit in a basement that currently has no drainage system. Includes liner, gravel bed, and pump.
National average cost: $1470–$2940 • Free diagnosis, no credit card needed
Low estimate
$1260
National average
$2100
High estimate
$3150
National averages based on Angi, HomeAdvisor, and Thumbtack data (2026). Local rates vary — enter your city below or use the chat for a local estimate.
What to Expect with Sump Pit Installation
Installing a sump pit is the foundation of any basement waterproofing system. Without a proper pit, water has nowhere to collect before it reaches your finished floor. Pit installation is common in older homes built before sump systems became standard, as well as homes with failed perimeter drain systems.
The process involves breaking through the basement floor at the lowest point, excavating 18–24 inches deep and wide, installing a perforated basin liner surrounded by gravel, and sealing the concrete around the edges. The pit then receives a pump, discharge pipe, check valve, and airtight cover.
Sump pit installation typically costs $1,200–$2,500 depending on concrete thickness, soil conditions, and discharge pipe routing. The project takes a full day for an experienced crew. Most jurisdictions require a permit — your contractor should handle the application as part of the project.
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Frequently Asked Questions
How much does sump pit installation cost? ▼
Nationally, sump pit installation typically costs $1470–$2940. Your local market, the extent of the work, and whether emergency service is needed will affect the final price. Use our free diagnosis tool to get a realistic estimate before anyone shows up.
How do I know if I need sump pit or a full replacement? ▼
A good rule of thumb: if the repair cost exceeds 50% of a new pump's installed price, replace it — especially if the pump is over 7 years old. Our AI chat can walk you through the diagnostic questions a technician would ask to help you figure out which situation you're in.
How quickly can a contractor respond? ▼
For non-emergency work, most contractors can schedule within 2–5 business days. Many offer same-week availability.
Do I need a permit? ▼
Yes — new installation and pit excavation require a permit in most municipalities. Your licensed contractor should pull this automatically as part of the project.
Why sumppump.ai
- ✓ Licensed & insured contractors only
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- ✓ 24/7 emergency service available
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