The simplest approach is to create a separate job or customer in your accounting software specifically for warranty work. Call it something like “Warranty Repairs” or “Warranty - 2024” and code all warranty labor and materials to it. This lets you see exactly how much warranty work costs you across all jobs instead of letting those expenses disappear into overhead.

Whether to link warranty costs back to the original job depends on what information you need. If you want to see true profitability on each project including callbacks, create the warranty work as a sub-job under the original project. If you mainly care about total warranty costs as a category, a standalone warranty job works fine. Either method is valid as long as you’re consistent.

Track warranty work the same way you track any project. Log the hours your crew spends on callbacks. Record the materials you use. If you’re driving from Provo to fix something in Salt Lake, that’s time and fuel to capture. Most contractors underestimate their warranty costs because they don’t track them properly. The labor just gets absorbed into the week and the materials come out of general inventory without anyone noticing.

For construction job costing purposes, warranty work is a real cost that affects your margins. A job that looked profitable at completion might not be once you factor in two trips back to fix drywall cracks or replace a failed fixture. Tracking this separately helps you price future work more accurately and spot patterns. If one crew or one supplier consistently generates warranty claims, you need that information.

Larger contractors sometimes accrue a warranty reserve. This means setting aside a percentage of each contract value as a liability on your books to cover expected future warranty costs. When warranty work happens, you charge it against that reserve instead of current expenses. This smooths out your income and matches the warranty cost to the revenue that created it. For most smaller operations along the Wasatch Front, this level of detail isn’t necessary. But if you’re doing significant volume and warranty costs are unpredictable, it might make sense to discuss with your accountant.

What matters most is that warranty work shows up somewhere visible in your reports. Don’t let it get buried in miscellaneous expenses or mixed in with current job costs. You need to see it as its own line item so you can manage it.

If warranty work is eating into your profits more than expected, the data you collect will tell you where to focus. Maybe you need better quality control during construction. Maybe certain products aren’t holding up. Maybe you need to adjust your warranty terms or exclusions. You can’t make those decisions without accurate numbers showing you where the problems are.

A contractor bookkeeper in American Fork who understands construction can help you set up warranty tracking that integrates with the rest of your books without adding unnecessary complexity to your process.