What a construction office actually spends on admin

Ask a contractor what a crew costs per hour and you get an answer to the dollar. Ask what the office costs and you get a shrug. The office is where margin quietly leaks, and almost nobody measures it. Here is the math, with sources, for an owner running $2 million a year or more.

Key takeaways:

• A $10 million contractor typically carries $800,000 to $1.5 million a year in overhead, and office payroll is the biggest piece an owner can control [2]
• Construction professionals spend 35% of their time, more than 14 hours a week, on chasing information, resolving conflicts, and fixing mistakes (FMI and PlanGrid, 2018) [1]
• The average invoice costs $9.40 to process and takes 17.4 days to clear (Ardent Partners, 2025) [3][4]
• Every $100,000 of admin cost you remove adds roughly $300,000 of enterprise value at a conservative 3x multiple

What does a construction office spend on admin?

Start with the benchmark. CPA guidance for contractors puts total indirect costs at 8% to 15% of revenue, depending on company size (James Moore & Co., 2025) [2]. For a $10 million general contractor, that is $800,000 to $1.5 million a year before a single yard of concrete gets poured.

Now make it concrete. A $10 million contractor usually runs an office of six to ten people: an office manager, a bookkeeper, an AP clerk, a payroll admin, two or three project coordinators, and someone covering the front desk and dispatch. At a loaded cost of about $70,000 per person, an eight-person office is $560,000 a year in admin payroll alone.

Here is the uncomfortable part. Construction professionals spend 35% of their working time, more than 14 hours per person each week, on what researchers call non-optimal activities: hunting for project information, resolving conflicts, and dealing with mistakes and rework (FMI and PlanGrid, 2018) [1]. The same study put the industry-wide cost at more than $177 billion a year in labor. Apply that 35% to a $560,000 office payroll and about $195,000 a year is buying work that produces nothing.

Where do the hours go?

Walk through a normal week in the office and the pattern is obvious.

Bid follow-up. Estimates go out and sit. Someone is supposed to chase them. Most weeks nobody does, because the person assigned to it is also running payroll.

Job orders. The same work order gets typed three times: once in the email, once in the project tool, once in the accounting system. Every re-key is a chance to introduce an error someone else spends an hour fixing.

Invoicing. Across industries, the average invoice costs $9.40 to process, and best-in-class teams do it for $2.78 (Ardent Partners, 2025) [3]. The average invoice also takes 17.4 days to clear, against 3.1 days for the best (Ardent Partners, 2025) [4]. A contractor handling 500 vendor invoices a month is spending about $56,000 a year just moving paper, and waiting two and a half weeks to know its own job costs.

Subs coordination. Certificates of insurance, W-9s, lien waivers, compliance docs. Chasing subs for paperwork is a full-time habit spread across three people.

The morning report. Someone spends the first hour of every day assembling yesterday's field notes into a report the owner skims in ninety seconds.

None of this is anyone slacking. It is the structure of the work.

What does admin cost you at exit?

Buyers of construction companies price EBITDA, not effort. A dollar of unnecessary admin cost removed is a dollar of EBITDA gained. At a conservative 3x multiple, every $100,000 of recovered overhead adds roughly $300,000 of enterprise value.

In our discovery work, we typically find $50,000 to $350,000 a year of recoverable operating expense inside an operations-heavy business. At that same 3x multiple, that is roughly $150,000 to $1 million or more in enterprise value. The admin line is not just a monthly annoyance. It is a discount on the price of your company.

Which admin work can digital labor run?

Digital labor means AI systems doing work a person would otherwise do. Not a chatbot on the website. Systems that read the invoice, match it to the PO and the delivery ticket, post it, chase the sub for the missing COI, and assemble the morning report before anyone arrives.

Work digital labor can run today: invoice intake and three-way matching, data entry between systems, bid follow-up sequences, sub document collection, payroll prep, schedule reminders, and daily reporting.

Work that stays human: negotiating a change order, pricing a job, hiring, safety calls, and every conversation where a client needs to hear a person. Judgment stays human. The point is not fewer people for its own sake. It is that the people you keep stop re-keying data and start doing work that needs a brain.

Most of the industry has not started. In a survey of more than 2,200 professionals, about 45% reported no AI implementation and another 34% were in early pilots (RICS, 2025) [5]. Meanwhile, 86% of large contractors believe AI will give them a competitive advantage, against 69% of small and mid-sized firms (Dodge Construction Network, 2025) [6]. The big firms will move first. The window for a mid-market contractor is open now. We keep a running breakdown of the use cases on our AI for construction page.

What does this look like in a real company?

We did not start with clients. I learned AI deeply, then mapped our own family portfolio of operating companies to see where the hours were going. In one business we found a single person checking 2.5 million utility lines a year by hand, a process holding about $200,000 a year in payroll. We identified opportunities like that across the portfolio before we ever sold a service. Construction offices are full of the same pattern: one person, one repetitive process, one salary attached to it.

Client work is now proving it at scale. For one construction group, we are cutting a 14-person admin team down to 4. The plan removes over $500,000 a year in payroll and adds over $3 million in enterprise value. That work is in progress, and the four people who remain are moving onto the judgment work: clients, subs, and problems. We talk through builds like this on the podcast.

How do you find your own number?

You do not need a consultant for a first read. Pull your office payroll for the last twelve months. List what each person does in a week. Mark each task as judgment or process. The process column, priced at loaded cost, is your number.

For the outside view, start with the free AI capability map. We look at your operation and hand you a map of where digital labor fits, ranked by payback. When you are ready to build, our service ACE places a fractional AI Chief Executive inside your business for 90 days to stand the systems up and hand them over running.

The first step is a free discovery call. No deck, no pitch. We ask how your office runs, you tell us, and we tell you what we see. If your number is small, we will say that too. Book the call and find out what your office is really spending on admin.

Sources

1. FMI and PlanGrid, "Construction Disconnected," 2018. 35% of construction professionals' time spent on non-optimal activities; more than $177 billion a year in labor cost. constructiondive.com
2. James Moore & Co., "2025 Performance Benchmarks: Construction Companies," 2025. Overhead ratio of 8% to 15% of revenue depending on company size. jmco.com
3. Ardent Partners, "AP Metrics that Matter in 2025," 19th annual edition, 2025. Average cost to process an invoice $9.40; best-in-class $2.78. tungstenautomation.com
4. Ardent Partners, "2025 State of ePayables," 2025. Average invoice processing time 17.4 days; best-in-class 3.1 days. medius.com
5. RICS, "Artificial Intelligence in Construction Report 2025," survey of more than 2,200 professionals, 2025. About 45% report no AI implementation; 34% in early pilots. rics.org
6. Dodge Construction Network with CMiC, survey of 235 US general and trade contractors, 2025. 86% of large contractors vs 69% of small and mid-sized firms expect AI to be a competitive advantage. constructiondive.com