Bookkeeper, AP/AR Specialist or Controller: Which Does Your Construction Company Need?

A construction bookkeeper owns the books: recording transactions, reconciling accounts, coding costs to jobs and closing each month. An AP/AR specialist owns the transaction volume: supplier and subcontractor invoices coming in, billing and pay applications going out, and collections. A controller owns what the numbers mean: financial reporting, forecasting, job profitability reviews and oversight of the whole accounting function.

Most growing contractors need them in that order. The expensive mistake is hiring the third role to fix a problem the first or second would have solved.

What Does Each Role Own?

In a small company one person often covers the first two columns. The split becomes necessary when volume grows faster than that person's week.

What Does Each Role Cost?

The BLS reports a median wage of $50,670 a year for bookkeeping, accounting and auditing clerks in May 2025, and $54,890 for those working in construction. The same occupation includes accounts payable and accounts receivable clerks, so it is a reasonable guide for both of the first two roles.

Controllers sit in a different bracket. The BLS groups them with other financial managers, whose median wage was $166,570 in May 2025, and lists five years or more of related experience as typical for the occupation. That group also includes treasurers, finance officers and other finance roles, so the median is only a rough guide for a controller. Even so, expect the role to cost far more than a bookkeeper.

That gap is why the order matters. A controller doing bookkeeping is an expensive bookkeeper.

When Do You Need a Bookkeeper?

Start here if any of these are true:

• Nobody owns the books, or the owner does them at night.
• Bank and credit card accounts are reconciled late or not at all.
• Costs are not coded to jobs, so you cannot tell which jobs made money.
• Month-end takes weeks, or does not really happen.
• Your CPA spends year-end cleaning up rather than reviewing.

Our guide to what a construction bookkeeper actually manages covers the role in detail, and the Construction Bookkeeper page explains how we place one.

When Do You Need an AP/AR Specialist?

Add one when someone owns the books, but the volume keeps them behind:

• Supplier and subcontractor invoices sit unentered for days or weeks.
• Invoices are paid without being matched to the purchase order or subcontract.
• Pay applications miss billing cutoffs.
• Collections calls happen when someone remembers.
• Retainage is billed late because nobody tracks when it comes due.
• Your bookkeeper has no time left for reconciliations and the close.

An AP/AR specialist takes the volume so the bookkeeper can keep the books accurate. For the routine itself, see a weekly accounts payable and receivable routine.

When Do You Need a Controller?

A controller earns their cost when the books are accurate and current, but decisions still feel like guesswork:

• You cannot see how jobs are trending against budget until they are finished.
• Cash surprises keep happening even though billing and collections run on schedule.
• The bank, your surety or your investors are asking for better reporting.
• Several people now work in accounting and nobody oversees the whole function.
• Your work-in-progress schedule and job forecasts are prepared inconsistently.

Controller-level work is usually done by an experienced in-house hire or a part-time controller from an outside firm. Either way, a controller relies on the bookkeeping and transaction work underneath being accurate and on time. That layer is the one to build first.

Where Does an Accounting Assistant Fit?

An accounting assistant supports whoever runs accounting, whether that is a controller, an in-house accountant or a senior bookkeeper. The work spans data entry, document collection, invoice processing and report preparation across the function rather than owning one area. It is a good fit when the person in charge is spending their time on processing rather than review.

What Order Should You Hire In?

1. Bookkeeper first, so the books are accurate and closed every month.
2. AP/AR specialist or accounting assistant next, when transaction volume or job count keeps the bookkeeper behind.
3. Controller when decisions need it, once you need forecasting, job profitability reviews and oversight more than you need processing.

Your outside CPA stays in the picture throughout. Tax returns, tax planning and any review or audit of your financial statements remain their work, whichever roles you add inside the company.

Frequently Asked Questions