Finance

What is overhead in construction?

Overhead in construction is the cost of running the company that cannot be charged directly to a specific job: office rent, office salaries, software, insurance not billed to jobs, vehicles for estimators, and similar expenses.

Two construction professionals review paper plans beside a tablet at a jobsite workbench.
Plan reviews connect field conditions, drawings, and the next decisions on a job. AI-generated illustration.

Overhead is what it costs to keep the doors open whether or not a crew is working today. It is often called general and administrative cost, G&A, or home office overhead. Every job has to carry a share of it, which is why overhead is built into the markup on every bid.

Overhead is different from job site general conditions. The superintendent's truck, the site trailer, and the dumpster on a specific job are job costs. The owner's salary, the estimator's software license, and the office lease are overhead. That split is the line between direct costs and indirect costs.

What counts as overhead

  • Office rent, utilities, and maintenance.
  • Salaries and burden for the owner, office manager, accounting, estimating, and other staff not charged to jobs.
  • Accounting, legal, and consulting fees.
  • Software, phones, and IT.
  • Insurance and licensing not allocated to jobs.
  • Marketing, bid plan services, and association dues.
  • Vehicles and equipment used for the business, not one project.

How to calculate an overhead rate

The simplest approach divides annual overhead by a base. Two common bases are total revenue and total direct job cost. Say a remodeling contractor expects $720,000 of overhead next year on $6,000,000 of revenue and $4,800,000 of direct job costs.

Example overhead rate calculation
BaseCalculationOverhead rate
Revenue$720,000 / $6,000,00012% of revenue
Direct job cost$720,000 / $4,800,00015% of direct cost

If the estimator marks up direct costs, the 15 percent figure is the one to use. If the company thinks in margin on revenue, 12 percent is the share of each sales dollar that must go to overhead before any profit exists. Mixing the two is a classic way to underprice work. The markup vs. margin guide walks through the math.

Common mistakes

  1. Using last year's overhead without adjusting for new hires, a bigger office, or higher insurance.
  2. Leaving the owner's salary out of overhead, which makes every job look more profitable than it is.
  3. Charging job costs to overhead (or the reverse), which distorts both the job cost reports and the rate.
  4. Spreading overhead evenly across a small service call and a $2 million job when they use the office very differently.
  5. Not checking actual overhead against the budget during the year. If revenue drops, the overhead rate on remaining work goes up.

Watch the timing as well. Overhead runs every month, but revenue from jobs arrives unevenly. A contractor that wins most of its work in spring still pays rent and salaries in January. That is why overhead belongs in the annual budget and the cash flow forecast, not just in the estimate markup.

Related terms

Overhead ties directly to profit margin, markup, labor burden, and the burden rate. For step by step methods, see how to calculate construction overhead rate. Smart Business Automator separates job costs from company costs so the overhead number is real. See job costing and WIP automation.

Frequently asked questions

Is overhead a direct or indirect cost?

Indirect. Overhead is not tied to a single project and is spread across all jobs through markup.

What is a typical overhead percentage for contractors?

It varies widely by trade, size, and business model. The only number that matters for pricing is your own, calculated from your budget and expected volume.

Are general conditions overhead?

No. General conditions are job-specific costs such as site supervision, temporary facilities, and cleanup. Overhead is company-level cost.

How do I recover overhead?

Include it in the markup on every estimate, based on an overhead rate calculated from your annual budget and expected volume.

Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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