PLUMBING
How to Estimate Backflow Preventer Installation
Contractor method for estimating backflow preventer installation by type, size and labor.
A backflow preventer bid is the device, the labor and the testing. The device type and line size set the hardware, and testing and a permit add fixed lines.
THE SHORT ANSWER
How do you estimate backflow preventer installation?
Add the device by type and size, plus labor, testing and permit. An RPZ device at $700 with $250 labor, $100 testing and $150 permit totals $1,200.
Choose the device type
PVB, double-check and reduced-pressure (RPZ) devices differ in price and protection level. The application decides which is required.
- PVB
- Double check
- Reduced pressure (RPZ)
Price by size
The line size sets the device price. Larger lines and higher-grade devices cost more.
Add labor, testing and permits
Installation labor plus a required test and certification, and often a permit, round out the job.
Total and validate
$700 device + $250 labor + $100 test + $150 permit = $1,200. Use the Backflow Preventer Installation Cost Calculator.