About this example plumbing estimate
The example prices a 50-gallon gas water heater replacement: the heater, fittings and a new shutoff valve, 4 hours of labor, the permit and haul-away of the old unit. A thermal expansion tank is an optional section, since many areas now require one with a new heater.
How to estimate a plumbing job
Most plumbing estimates are parts at cost plus markup, labor by the hour or a flat rate per task, and the permit. Price the unknowns, like corroded shutoffs or code upgrades, as optional lines so the customer isn't surprised and you aren't stuck absorbing them.
What goes on a plumbing estimate
- Fixtures or equipment, with model numbers
- Fittings, valves and supply lines
- Labor, flat rate or hourly
- Permit and inspection
- Disposal of old equipment
- Code upgrades as optional lines
Questions
Should plumbers charge flat rate or hourly?
Flat rate per task is easier for customers to accept and rewards fast work. Keep tracking hours so your flat rates stay profitable.
Do I need a permit to replace a water heater?
In most US jurisdictions, yes. Include it as a line item so the customer sees it.