Construction Audit Services

Financial Audit Support Designed Around How Construction Businesses Actually Operate

Construction audits are among the more demanding financial reviews any business goes through, and the reason is not complicated. The financial structure of a construction business is genuinely complex in ways that catch underprepared companies off guard. Revenue recognized over the life of a project rather than at a single point of sale. Multiple contracts running simultaneously, each with its own cost structure, billing schedule, and completion timeline. Retainage held back by owners and owed to subcontractors sitting on both sides of the balance sheet. Change orders that alter contract values and affect how much revenue should have been recognized to date. Overbilling and underbilling positions that need to be calculated accurately and disclosed properly. Job cost allocations that have to be right at the project level for the consolidated financials to mean anything.

Each of these creates specific audit risk, and auditors who work in construction know exactly where to look. A business that has been managing its project accounting with general bookkeeping practices rather than construction-specific disciplines tends to find this out during fieldwork rather than before it, which is considerably more disruptive and expensive than finding it beforehand.

Most construction businesses we work with are not in financial difficulty when they come to us. The issue is almost always that the records behind the financials were not built to the standard a thorough audit requires. Job costs have been allocated loosely. Percentage of completion calculations have not been documented clearly. Overbilling and underbilling schedules have not been maintained consistently. The books work well enough for day-to-day management but were never designed to hold up under structured examination.

AcoBloom provides specialist construction audit support, working with contractors, subcontractors, project developers, and construction groups to get financial records into genuinely audit-ready condition and keep them that way throughout the year.

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Audit Preparation and Pre-Fieldwork Review

A thorough review of your financial records and project accounting before auditors arrive, identifying gaps, inconsistencies, and areas where documentation does not yet meet the standard fieldwork will apply. Issues resolved and records organized before the audit begins rather than discovered as findings during it.

Job Cost Review and Reconciliation

Job cost ledgers reviewed and reconciled against project budgets, subcontractor agreements, and supplier invoices. Every cost allocation verified as accurate and traced to the correct project. Misallocated costs identified and corrected before they distort project-level profitability and, by extension, the revenue recognized against each contract.

Percentage of Completion Calculations

Completion percentages calculated and documented for every active contract, with the methodology applied consistently across the portfolio and the inputs, costs incurred, estimated costs to complete, and contract values, verified and supported. Percentage of completion is one of the most judgement-intensive areas in construction accounting and one of the most carefully tested during audit fieldwork.

Overbilling and Underbilling Schedule Preparation

Accurate overbilling and underbilling positions calculated for every contract and presented as a properly prepared schedule. These balances represent some of the most scrutinized figures on a construction balance sheet and need to be calculated correctly, supported by project documentation, and disclosed in accordance with applicable accounting standards.

Revenue Recognition Review

Contract revenue reviewed for compliance with ASC 606 and the specific application guidance for long-term construction contracts. Performance obligations identified, transaction prices allocated, and recognition timing verified across the project portfolio. Revenue recognition errors in construction tend to be material and tend to be difficult to explain to auditors without organized supporting documentation.

Contract and Change Order Documentation

Original contracts, executed change orders, and pending change order logs organized and reconciled against the contract values used in revenue recognition calculations. Change orders that have been incorporated into billing without being reflected in recognized revenue, or recognized in revenue without being properly executed, are a consistent source of audit findings in construction.

Retainage Accounting and Reconciliation

Retainage receivable and retainage payable balances reviewed and reconciled against contract terms and project records. Both sides of the balance sheet verified against what has been billed, what has been withheld, and what is owed to subcontractors under back-to-back retainage arrangements. Retainage balances that do not reconcile cleanly are a common audit focus area and rarely straightforward to explain without organized records behind them.

Subcontractor Cost and Lien Waiver Documentation

Subcontractor invoices verified against executed agreements, with lien waivers matched to payments and outstanding waivers identified. Subcontractor cost documentation is an area where construction audits regularly generate queries, particularly where costs have been accrued for work completed but not yet invoiced.

Equipment and Fixed Asset Verification

Fixed asset registers reviewed and reconciled against physical assets, with additions, disposals, and depreciation schedules verified as accurate. Construction equipment represents a significant portion of the asset base for most contractors and fixed asset accuracy is a standard area of audit focus.

Bonding and Surety Financial Support

Financial statements and supporting schedules prepared and organized to meet the requirements of bonding companies and surety underwriters. Bonding capacity depends on the quality and credibility of the financial information presented, and well-organized, audited financials prepared to construction industry standards support that process considerably better than general-purpose accounts that were never designed with surety review in mind.

Work in Progress Schedule Preparation

A complete, accurately prepared work in progress schedule covering all active contracts, showing original contract values, approved change orders, costs incurred to date, estimated costs to complete, percentage of completion, revenue recognized to date, and overbilling or underbilling positions. The WIP schedule is the central document in a construction audit and the one that requires the most preparation to get right.

Post-Audit Support and Finding Resolution

Where an audit produces findings or management letter comments, we work through the resolution properly, correcting the accounting treatment, addressing the underlying process or control issue, and documenting the remediation. A finding that recurs in the following year's audit is a sign that the resolution focused on closing the current issue rather than fixing what caused it.

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Construction Audit Expertise

Job costing, percentage of completion, overbilling and underbilling, retainage, change order accounting. These are the areas construction auditors focus on and the areas where preparation makes the most difference. We understand what is being tested and build records that hold up when it is.

Year-Round Audit Readiness

The most audit-ready construction businesses are the ones whose project accounting is maintained to that standard throughout the year. We keep records organized and current so the audit is a verification exercise rather than a reconstruction project that starts when the engagement letter arrives.

WIP Schedule Accuracy

The work in progress schedule is the foundation of a construction audit. An inaccurate WIP schedule creates problems across revenue recognition, balance sheet presentation, and financial disclosure that are difficult to resolve quickly under audit pressure. We maintain it with the accuracy and documentation it requires.

Job Cost and Financial Record Alignment

Project-level job cost records and consolidated financial statements need to tell the same story. Where they do not, the discrepancy becomes an audit finding. We keep the two aligned throughout the year rather than reconciling them for the first time when fieldwork begins.

Technology-First Approach

We work across QuickBooks Online, Xero, Sage, and construction-specific platforms including Procore, Buildertrend, and Foundation, connecting project management and job costing data to accounting records so information flows accurately without manual processes creating gaps between systems.

Dedicated Construction Accounting Specialists

Your audit support is handled by people who work specifically in construction finance, understand project accounting, and know what organized, audit-ready records look like for a contractor or developer going through a thorough financial review.

Frequently Asked Questions

Several things specific to how construction businesses operate. Revenue recognition under the percentage of completion method requires judgement at every reporting date and those judgements need to be documented and supportable. The overbilling and underbilling schedule requires accurate job cost data across every active contract. Retainage sits on both sides of the balance sheet and needs to reconcile against contract terms and payment records. Change orders affect contract values and recognized revenue in ways that need to be tracked carefully. And the relationship between project-level job cost records and consolidated financial statements creates alignment requirements that do not exist in most other industries. Auditors who work in construction know all of this and test it specifically.

Ideally, audit preparation is not a seasonal activity at all. Construction businesses that maintain project accounting to audit standard throughout the year consistently have shorter, smoother audits than those that begin preparing when the engagement is scheduled. If an audit is approaching and preparation has not been systematic, starting three to four months out gives enough time to identify and address most gaps. Starting later means accepting that some issues will surface during fieldwork rather than being resolved beforehand, which is always more disruptive and more expensive.

The WIP schedule is the document that brings together every active contract's financial position in one place. For each contract it shows the original value, approved change orders, total costs incurred, estimated costs to complete, the percentage of completion, revenue recognized to date, and whether the contract is in an overbilled or underbilled position. It is the central document in a construction audit because almost every other area of audit focus, revenue recognition, balance sheet presentation, retainage, change order accounting, connects back to it in some way. A WIP schedule that is inaccurate or poorly supported creates problems across the entire audit rather than just in one area.

We calculate completion percentages using the cost-to-cost method, which is the approach most commonly applied under ASC 606 for construction contracts and the one auditors expect to see supported with clear documentation. For each contract we verify total costs incurred to date, review estimated costs to complete against current project conditions and budget assumptions, confirm the contract value including approved change orders, and document the methodology applied. Where estimates have changed from prior periods, we document the basis for the revision so the auditor can understand the movement without having to reconstruct it.

The WIP schedule and the inputs behind it attract the most attention. Revenue recognized against each contract is tested against the completion percentage and the contract value. Overbilling and underbilling positions are verified and traced to project records. Retainage balances are reconciled against contract terms and billing history. Change orders are examined to confirm they are properly executed and correctly reflected in revenue calculations. Job cost allocations are tested for accuracy at the project level. Subcontractor costs are traced to executed agreements and lien waiver records. And journal entries, particularly near period end, are reviewed for unusual activity.

Yes. Multi-entity construction groups and joint venture arrangements create additional complexity around intercompany transactions, shared equipment costs, overhead allocation, and consolidated reporting that all need to be handled correctly before an audit can proceed cleanly. We manage the accounting at both the entity level and the consolidated level, making sure intercompany eliminations are complete, joint venture accounting reflects the terms of the arrangement, and the consolidated financial statements present an accurate picture of the group's overall position.

Bonding companies and surety underwriters use audited financial statements as a primary input when assessing a contractor's bonding capacity. The working capital position, net worth, and the quality of the WIP schedule all factor into the underwriter's assessment of how much bonding they are prepared to extend. Financials that are well-organized, prepared to construction industry standards, and supported by a clean WIP schedule consistently support stronger bonding capacity than general-purpose accounts that were not built with surety review in mind. For contractors where bonding capacity affects the size and type of work they can pursue, the quality of the audit preparation has a direct commercial consequence.