Main Points
I call this the "Burden Multiplier." In Texas, where workers' comp rates can vary wildly based on your safety record, ignoring this multiplier is a fast track to bankruptcy.
The biggest mistake you can make is waiting until the end of the month to see if you made money. By then, it’s too late. You’ve already moved on to the next three jobs with the same flawed pricing.
Real-time job costing means you are tracking expenses every single day.
Roughly 62.4% of residential roofing projects in high-growth metros like Austin end up netting at least 9.7% less profit than the initial estimate suggested. This isn't usually because of a catastrophic failure or a fallen tree on a job site. Instead, it is the slow bleed of "invisible" costs that contractors fail to account for when they’re rushing to get a bid out for a homeowner in Circle C Ranch or West Lake Hills. When I look at the books of the companies I consult for, the gap between "estimated profit" and "actual cash in the bank" is almost always found in the details of job costing.
I spent a few days last month walking through the numbers with Yara, who runs a mid-sized outfit based near South Lamar. She was hitting her revenue targets, hovering around $3.8 million annually, but her take-home pay was lower than when she was doing half that volume. We sat down with her last fifteen invoices from jobs in Round Rock and Cedar Park. What we found was startling. On average, she was underestimating her labor burden by 14.3% and completely ignoring the "windshield time" her crews spent sitting in I-35 traffic. For a roofing business owner, revenue is a vanity metric; profit is the only reality that keeps your trucks on the road.
The High Cost of the Austin "Windshield" Factor
If you are operating in Central Texas, your biggest silent killer is geography. I’ve watched crews spend 72 minutes trying to get from a supply house in North Austin to a residential street in Buda during the afternoon rush. If you have a four-man crew in that truck, you just burned nearly five man-hours of productivity. Most shop owners categorize this as "overhead," but that’s a mistake.
When your labor is costing you an average of $26.85 per hour according to the latest Bureau of Labor Statistics data, those traffic jams are directly eating your job-specific margin. To fix this, Yara started implementing a "Zone Surcharge" based on travel time. If a job is more than 22 minutes from her warehouse during peak hours, a flat $185 logistics fee is added to the estimate. It sounds small, but over 114 jobs a year, that is over $21,000 back in her pocket.
The roofing industry is a $56B market, and in a city growing as fast as Austin, the competition for skilled labor is fierce. You aren't just competing with other roofers; you're competing with tech giants building campuses in the area who can offer climate-controlled environments. To keep your margins healthy, you have to know exactly what it costs to keep your best people on a hot roof in August.
Calculating Your True Labor Burden
Most owners I talk to think labor cost is just the hourly wage. If you pay a guy $28 an hour, you think your labor cost is $28 an hour. In reality, once you factor in FICA, FUTA, SUTA, workers' comp, and general liability, that $28 worker actually costs you closer to $39.60.
I call this the "Burden Multiplier." In Texas, where workers' comp rates can vary wildly based on your safety record, ignoring this multiplier is a fast track to bankruptcy.
When Yara and I looked at her labor burden, we realized she was losing $11.40 for every hour worked because she wasn't factoring in her insurance premiums correctly. We adjusted her bidding software to automatically apply a 1.38 multiplier to all base wages. Suddenly, her estimates were higher, but her jobs were actually profitable. You have to be willing to lose a job that doesn't meet your margin requirements. Chasing "busy work" that nets 4% profit is just a slow way to go out of business.
The Materials Gap and the Travis County Surcharge
In Austin, disposal isn't just about the dumpster rental. Local regulations and the push for "green" initiatives mean that your shingles can't just go anywhere. If you're hauling to a facility that requires sorting or has specific Travis County environmental surcharges, your $450 dumpster estimate might turn into a $680 invoice.
We tracked Yara’s last 43 jobs and found that 82% of them had material overages that weren't being billed back. Why? Because the estimators were using "perfect world" waste factors. Austin’s architecture, especially in areas like Tarrytown or Pemberton Heights, often involves complex valleys and steep pitches that require significantly more cutting.
We moved her team to a system where they started using a mobile app to photograph leftover materials and receipts immediately upon job completion. By the time the crew was packing up, Yara knew if they were $300 over on flashing or if they had extra bundles to return.
Real-Time Job Costing vs. Post-Mortem Analysis
The biggest mistake you can make is waiting until the end of the month to see if you made money. By then, it’s too late. You’ve already moved on to the next three jobs with the same flawed pricing.
Real-time job costing means you are tracking expenses every single day.
- 1Daily Labor Logs: Crews text in their start/stop times and any delays (weather, material shortages).
- 2Instant Receipts: No more shoeboxes of faded thermal paper.
- 3Mid-Job Review: If a three-day job hits day two and you've already burned 75% of the labor budget, you need to know why immediately.
I've seen shops fix this problem by simply appointing a project lead who is responsible for a daily "cost-to-complete" report. It takes five minutes, but it prevents a $2,000 mistake from turning into a $6,000 disaster.
Improving Lead Quality to Protect Margins
One of the most overlooked parts of job costing is the cost of acquisition. If your sales team is driving all over Williamson County to bid on "window shoppers" who just want a free estimate for their insurance company, your overhead is skyrocketing.
This is where your lead source matters. I tell my clients that a "cheap" lead is often the most expensive thing they can buy because of the wasted time involved. You want leads that are already vetted. For instance, when you use a 7-point lead verification process, you aren't wasting fuel and man-hours on people who aren't ready to sign.
Every hour an estimator spends on a "dead" lead is an hour they aren't closing a high-margin reroof. In Austin’s competitive climate, your "Cost Per Issued Lead" (CPIL) needs to be a core part of your job costing. If it costs you $400 in marketing and labor to get an estimate in front of a homeowner, that $400 has to be recovered in your project margin.
Creating a Sustainable Profit Framework
To scale a roofing business in Central Texas, you need a framework that works whether you're doing five roofs a month or fifty.
- 1Calculate your Overhead Recovery Mark: Take your total annual overhead (rent, utilities, admin, trucks) and divide it by the number of billable hours your crews work. If your overhead is $250,000 and you have 10,000 billable hours, you must add $25 to every man-hour just to break even.
- 2Define Your Target Margin: In a market like Austin, you should be aiming for a gross margin of 38% to 45%. If you fall below 32%, you aren't leaving enough room for the inevitable mistakes that happen on a job site.
- 3Audit Your Vendors: Are you still paying 2022 prices for OSB and shingles? Prices fluctuate, and your estimates need to reflect the current week's reality, not last year's.
When Yara started applying these three steps, her stress levels dropped immediately. She stopped worrying about how many "leads" she had and started focusing on how many "profitable" jobs she was running. She even started turning down work in certain parts of town where the logistics simply didn't make sense for her bottom line.
The goal of your business isn't to be the biggest roofer in Texas; it’s to be the most profitable. By mastering job costing, you’re ensuring that every shingle laid and every mile driven is contributing to your long-term stability.
