What is overhead in construction

Overhead in construction is the cost of running the business that is not tied to any single project. In other words, what is overhead in construction comes down to this: it is everything you would still pay for in a month with zero active jobs, plus the support costs a project needs that do not become part of the finished structure. Office rent, general liability and workers compensation insurance, accounting and software subscriptions, your truck, the estimator who writes bids, and your own salary as the owner are all overhead. Furthermore, every range and percentage in this guide traces to a named primary source: the National Association of Home Builders (NAHB) Cost of Doing Business Study, the U.S. Census Bureau 2022 Economic Census, and the Bureau of Labor Statistics Occupational Outlook Handbook.

Understanding what is overhead in construction matters because overhead is the cost line that bankrupts profitable-looking contractors. A job can come in on budget on materials and labor and still lose money once the share of office rent, insurance, and owner pay that the job should carry is added back. As a result, contractors who do not price overhead into every bid are effectively donating it to the customer. This guide explains exactly what counts as overhead, how it differs from direct cost and profit, how to calculate an overhead rate, and how to recover it on every job.

Overhead vs direct costs vs profit

The three numbers on any construction job are direct costs, overhead, and profit. Specifically, direct costs are the costs of building the project, overhead is the cost of running the business that supports the project, and profit is what is left after both are covered. As a result, confusing the three is the most common job-costing error in the trade. A contractor who treats overhead as if it were profit will think a job made money when it only broke even.

Direct costs (the cost of the job)

Direct costs are the costs you can trace to one specific job. Specifically, this is the lumber, concrete, fixtures, and other materials installed in the project, the wages of the crew on that job, the subcontractors hired for that job, equipment rented for that job, and the dumpster on that site. As a result, if you stopped doing that one job, the direct cost would disappear. Direct cost is also called cost of sales or cost of goods sold. According to the NAHB Cost of Doing Business Study, cost of sales is the dominant cost line for home builders by a wide margin.

Overhead (the cost of the business)

Overhead is the cost of keeping the business open so it can do jobs at all. Specifically, overhead does not disappear when one job ends because it supports every job at once. Office rent, the bookkeeper, insurance premiums, software subscriptions, marketing, vehicle costs, and the owner salary all keep running whether you have one job or ten. As a result, overhead has to be spread across all the jobs in a year, not charged to any single one. This spreading is called overhead allocation, and it is the heart of what is overhead in construction as a practical matter.

Profit (what is left over)

Profit is what remains after direct costs and overhead are both covered. Specifically, profit is the reward for taking on the risk of the business and the capital tied up in it. As a result, profit is not the same as the owner salary. The owner salary is overhead, because it pays the owner for the work of running the company. Profit is the additional return on top of that. Furthermore, the NAHB data shows the gap clearly: builders reported an average gross profit margin of 20.7 percent of revenue but an average net profit margin of 8.7 percent in 2023, and most of that 12-point gap is overhead.

The two types of construction overhead

Construction overhead splits into two buckets: general overhead and job overhead. Specifically, general overhead is the cost of the company itself, while job overhead is the project support cost that is not part of the finished building. As a result, knowing which bucket a cost belongs in changes how you recover it. General overhead is spread across all jobs through an overhead rate. Job overhead is usually charged to the specific job that incurred it.

General overhead (company overhead)

General overhead, sometimes called company overhead or fixed overhead, is the cost of running the business regardless of which jobs are active. Specifically, it includes office rent and utilities, office staff and the bookkeeper, general liability and workers compensation insurance, accounting and legal fees, software and tools subscriptions, marketing and advertising, vehicle and fuel costs not assigned to a job, professional licenses and dues, and the owner salary. As a result, general overhead is the bucket most contractors underestimate, because much of it is paid monthly and never appears on a single job ticket.

Job overhead (project overhead)

Job overhead, also called project overhead or general conditions, is the support cost a specific project needs that does not end up in the finished structure. Specifically, it includes the project manager or superintendent supervising the site, the permit and inspection fees for that job, the temporary toilet, temporary power and water, the dumpster, site security and fencing, the field office trailer, and project-specific insurance or bonds. As a result, job overhead is usually charged to the job that caused it, which is why it appears as a line on the estimate rather than as a percentage spread across the whole year.

What counts as overhead: a full checklist

The fastest way to learn what is overhead in construction is to walk a checklist and sort each cost. Specifically, the line items below are the general overhead costs most contractors carry. As a result, a contractor who totals these for a full year has the numerator they need to calculate an overhead rate. The list is not exhaustive, but it captures the costs that dominate the overhead bill for a small to midsize contractor.

Office and administrative

Office rent or the imputed cost of a home office, office utilities and internet, office supplies, computers and printers, and the cost of the bookkeeper or office manager all sit here. Specifically, the estimator who writes bids is overhead because the estimator supports every job, not one. As a result, the administrative bucket grows quietly as a company adds office staff who do not swing a hammer.

Insurance and bonding

General liability insurance, workers compensation insurance, commercial auto insurance, and the cost of bonding capacity all sit in overhead when they cover the company rather than a single project. Specifically, workers compensation is one of the largest overhead lines for trades with high injury rates, because the premium scales with payroll and risk class. As a result, contractors who self-perform high-risk work carry a heavier overhead burden than those who subcontract that work out.

Vehicles and equipment

Trucks, vans, trailers, and the fuel and maintenance that keep them running are overhead when they are not assigned to a single job. Specifically, owned equipment that moves from job to job (a small excavator, scaffolding, a generator) is also overhead, recovered through an equipment rate rather than charged to one job. As a result, depreciation, financing, registration, and repair on these assets all roll into the overhead total.

Software, marketing, and professional fees

Estimating and accounting software subscriptions, the website and lead-generation spend, vehicle wraps and signage, accounting and legal fees, professional licenses, association dues, and continuing education all sit in overhead. Specifically, these costs support the business as a whole and produce work across many jobs. As a result, they belong in the overhead pool, not in the cost of any single project.

Owner compensation

The salary the owner draws for the work of running the company is overhead. Specifically, if the owner also works in the field on a specific job, that field time is a direct labor cost on that job, while the time spent estimating, selling, managing, and running the office is overhead. As a result, separating owner field time from owner office time is one of the cleanest ways to get overhead right.

How to calculate your overhead rate

An overhead rate expresses overhead as a percentage so it can be added to every bid. Specifically, there are two common methods: overhead as a percentage of revenue, and overhead as a percentage of direct cost (a markup). As a result, picking one method and applying it consistently is more important than which method you pick. The steps below walk through both.

1. Total your annual general overhead

   Add up a full year of general overhead from the checklist above: office, insurance, vehicles, software, marketing, professional fees, and owner salary for running the company. Use last year’s actual numbers from your accounting software or tax return as the starting point. This total is the overhead you must recover across all the work you do in a year.

2. Total your annual revenue and direct cost

   Pull your annual revenue and your annual direct cost (materials, job labor, subcontractors, job equipment) for the same year. The difference between revenue and direct cost is your gross profit, which has to cover overhead first and leave profit second. These two totals are the denominators for the two overhead-rate methods.

3. Calculate overhead as a percentage of revenue

   Divide annual overhead by annual revenue, then multiply by 100. For example, $120,000 of overhead on $800,000 of revenue is a 15 percent overhead rate. This tells you that 15 cents of every revenue dollar goes to overhead before any profit. It is the simplest rate to track year over year.

4. Calculate overhead as a markup on direct cost

   Divide annual overhead by annual direct cost, then multiply by 100. For example, $120,000 of overhead on $600,000 of direct cost is a 20 percent overhead markup. This is the number you add on top of a job’s direct cost to cover overhead. Note that a markup percentage is always larger than the matching margin percentage on the same dollars.

5. Apply the rate to every bid and add profit

   On a new bid, total the job’s direct cost, add your overhead markup to cover overhead, then add a separate profit percentage on top. The result is the price you quote. Recalculate your overhead rate at least once a year, or whenever you add a major fixed cost like a new office, a hire, or a vehicle.

What is a typical overhead percentage in construction?

There is no single correct overhead percentage, because overhead depends on company size, trade, and how much work is self-performed versus subcontracted. Specifically, the clearest primary-source signal comes from the gap between gross profit and net profit in the NAHB data. As a result, you can read overhead as roughly the difference between what a contractor keeps after direct costs and what they keep after everything.

What the NAHB builder data shows

The NAHB Cost of Doing Business Study reports that home builders had an average gross profit margin of 20.7 percent and an average net profit margin of 8.7 percent in 2023, up from 18.2 percent and 7.0 percent in 2020. Specifically, the roughly 12-point gap between gross and net is largely overhead (operating expenses including general and administrative costs, sales and marketing, finance, and owner compensation). As a result, a builder running near these averages is carrying overhead in the low double digits as a share of revenue, and the rest of gross profit becomes net profit.

What the NAHB remodeler data shows

Remodelers run a different cost structure. Specifically, the NAHB Remodelers Cost of Doing Business Study reports a 29.9 percent average gross profit margin and a 6.3 percent average net profit margin for remodelers in 2024, with trade contractor costs falling from 36 percent of revenue in 2021 to 30 percent in 2024. As a result, the gap between gross and net is wider for remodelers (roughly 23 to 24 points), which reflects the heavier overhead load of running many small jobs, more estimating, and more customer management per dollar of revenue.

The takeaway is not to copy a percentage off this table. Specifically, the right overhead rate is your own, calculated from your own annual overhead and revenue. As a result, these NAHB figures are best used as a sanity check: if your calculated overhead rate is wildly different from the industry pattern for your segment, recheck what you classified as overhead versus direct cost.

Why underpriced overhead sinks profitable jobs

The single most common way a contractor loses money on a busy year is to win jobs that cover direct cost and a little profit but never fully cover overhead. Specifically, every such job looks like a winner on the job ticket while quietly leaving a share of the office, insurance, and owner pay unrecovered. As a result, the contractor finishes the year having done a lot of work, kept the crew busy, and still come up short at tax time. Understanding what is overhead in construction is the defense against exactly this outcome.

The bid-low spiral

A contractor under pressure to win work trims the bid by cutting overhead and profit first, because those feel optional in the moment. Specifically, the direct cost is hard to fake (materials and labor cost what they cost), so the squeeze lands on overhead recovery. As a result, the contractor wins more jobs at thinner overhead recovery, stays busy, and runs out of cash because the office still has to be paid. The fix is to treat overhead recovery as non-negotiable in the bid and to compete on value, not on giving away the overhead line.

Overhead does not pause between jobs

Overhead is mostly fixed, which means it keeps running during slow stretches and gaps between jobs. Specifically, the office rent, insurance, and owner salary are due in a slow February the same as in a busy June. As a result, the overhead rate has to be calculated against realistic annual revenue, not peak-season revenue, or the rate will be set too low and the slow months will eat the profit. Furthermore, a large share of the people setting these bids are owner-operators: the U.S. Census Bureau counted 2,875,590 nonemployer construction businesses in 2022, firms that run with no payroll employees, so many bidders carry their own overhead with no back office to absorb a miss.

How SimplyWise helps you price overhead into every bid

Pricing overhead correctly starts with a clean, fast estimate that separates direct cost from markup. Specifically, the SimplyWise Cost Estimator uses photo-to-estimate and LiDAR room scanning to turn a job site photo or a room scan into a sourced material and labor breakdown in seconds. As a result, you start every bid with a defensible direct-cost number, which is the foundation you add your overhead markup and profit on top of. When the direct cost is solid, the overhead math is simple.

From there, SimplyWise turns the estimate into a branded PDF quote you can send to the customer, so the overhead and profit you priced in are presented as a clean, professional total rather than a back-of-the-napkin figure. Furthermore, SimplyWise bundles Receipts and Expenses tracking and Mileage tracking, which feed the overhead side of the picture directly. Specifically, capturing your vehicle, fuel, tool, software, and insurance costs as they happen gives you the accurate annual overhead total you need to calculate an honest overhead rate at year end. SimplyWise is an estimating and quoting tool, not a full field-service CRM, so it pairs well with whatever scheduling or dispatch system you already run.

SimplyWise Cost Estimator is free to try, with no credit card required, through a 7-day trial, then from $29.99/mo after. As a result, you can build your next handful of bids, separate direct cost from overhead markup and profit, and see whether your prices are actually recovering what the business costs to run before you decide to subscribe.

Sources

• National Association of Home Builders (NAHB), Cost of Doing Business Study, 2025 Edition: home builders had an average gross profit margin of 20.7 percent and an average net profit margin of 8.7 percent in 2023, up from 18.2 percent and 7.0 percent respectively in 2020. The 8.7 percent net margin was described as the highest in more than three decades. The study breaks revenue into cost of sales and operating expenses (finance, sales and marketing, general and administrative, and owner compensation).
• National Association of Home Builders (NAHB), Remodelers Cost of Doing Business Study, 2026 Edition: remodelers reported a 29.9 percent average gross profit margin and a 6.3 percent average net profit margin in 2024 (the highest net margin since 1996, up from 3 percent in 2011). Trade contractor costs fell from 36 percent of revenue in 2021 to 30 percent in 2024.
• U.S. Bureau of Labor Statistics, Occupational Outlook Handbook, Construction Managers: roughly 550,300 jobs were held in 2024, and employment is projected to grow 9 percent from 2024 to 2034 with about 46,800 openings per year on average.
• U.S. Census Bureau, 2022 Economic Census, NAICS Sector 23 (Construction): summary statistics for the U.S. construction sector, including establishment counts, revenue, and cost structure for the industry. The 2022 Nonemployer Statistics report 2,875,590 nonemployer construction businesses, underscoring how many construction firms are owner-operators carrying their own overhead.