Job Pilot Job Pilot

March 24, 2026 · Job Pilot Team

Underquoting is Killing Your Plumbing Business: Here's the Fix

Stop guessing on job costs and leaving money on the table. Learn how to accurately estimate plumbing repairs, materials, and labor to protect your profit margins.

The “I Can Probably Fix It for $200” Mistake

A client calls with a leaking faucet. You’ve fixed a hundred of these, so without thinking, you tell them it’ll be about $200.

You arrive at the house, take the fixture apart, and realize the shutoff valve is corroded and needs replacing, too. It takes you an extra hour, and you have to use parts you didn’t anticipate. You stick to your original $200 quote because you want to be a person of your word.

When you sit down to do the math later, you realize that after factoring in the hour of drive time, the parts, and your actual labor rate, you made exactly zero dollars on that call. Underquoting loses you money, but overquoting loses you jobs.

Stop Guessing and Start Estimating

The problem with “eyeball quoting” is that it relies entirely on your memory and ignores the hidden costs of running a service business.

Every single quote needs to account for:

  • The actual cost of the materials used.
  • The time spent picking up those materials.
  • Your standard markup percentage on parts.
  • The fully burdened cost of your labor (including taxes and insurance).
  • Overhead and travel time.

A Tool to Find the Sweet Spot

To help you find the sweet spot where you are profitable without scaring away customers, we built the Free Plumbing Estimate Calculator.

This tool helps you stop guessing on job costs by factoring in everything you need to create an accurate estimate. You can use it to:

  • Estimate Common Repairs: Quickly quote faucet replacements, pipe repairs, and toilet installations.
  • Calculate Labor Rates: Accurately factor in your hourly rates against the estimated time on the job.
  • Apply Materials Markup: Automatically apply your standard markup percentage to parts.
  • Account for Overhead: Factor in the travel time and hidden costs that eat into your profit.

Take Your Estimating to the Next Level

Using a calculator is a great first step, but integrating those estimates into your daily workflow is where you see real growth.

Job Pilot stores your pricing, tracks your actual costs against your estimates, and helps you refine your quoting over time. You can build professional quotes in minutes right from your phone and send them to the client before you even leave the job site.

Try the Plumbing Estimate Calculator for free and start your free trial with Job Pilot to start quoting like a pro.