Due Diligence Guide · General Contracting

Due Diligence Guide for Acquiring a General Contracting Business

Evaluate backlog quality, license transferability, bonding capacity, and owner dependency before closing on a $1M–$5M general contracting firm.

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Acquiring a general contracting business requires evaluating project-based financials, contingent liabilities, and operational dependencies that differ significantly from recurring-revenue businesses. This guide walks buyers through the critical diligence phases specific to lower middle market contractors.

General Contracting Due Diligence Phases

01

Financial & Earnings Quality Review

Assess whether reported earnings reflect sustainable, normalized performance across project cycles. Focus on job costing accuracy, margin consistency, and working capital dynamics including retainage and billing positions.

Job-Level Profit and Loss Analysiscritical

Review job cost reports for the trailing three years. Identify margin variability by project type and flag any jobs with cost overruns that distort normalized EBITDA.

Retainage and Billing-in-Excess Reviewcritical

Analyze accounts receivable aging, outstanding retainage balances, and overbilling positions. These affect true working capital at close and post-acquisition cash flow.

Owner Compensation Normalizationimportant

Identify personal expenses, above-market owner salary, and related-party transactions embedded in financials. Adjust EBITDA to reflect a market-rate replacement manager.

02

Operational & Legal Risk Assessment

Uncover contingent liabilities, licensing gaps, and insurance exposures that could impair value post-close. Construction businesses carry unique legal risks tied to completed and in-progress projects.

General Contractor License Transferabilitycritical

Confirm whether the GC license is held by the owner personally or the entity. Determine state-specific transfer requirements and whether a qualifying agent or new license application is needed.

Pending Liens, Litigation, and Warranty Claimscritical

Request lien releases on completed projects, review open disputes, and assess warranty reserves. Unresolved mechanic's liens or defect claims can become buyer liabilities in asset deals.

Insurance Coverage and Completed Operations Tailimportant

Verify active general liability, workers' comp, and builders risk policies. Confirm completed operations tail coverage extends past close to protect against post-close claims on finished projects.

03

Commercial & Transition Risk Evaluation

Assess the durability of the business without the current owner. Evaluate backlog concentration, subcontractor dependency, and whether key relationships and systems can transfer to new ownership.

Backlog Quality and Contract Terms Reviewcritical

Examine signed contracts in backlog for payment schedules, retainage terms, and cancellation clauses. Confirm backlog is diversified across clients and project types with realistic conversion timelines.

Owner Dependency and Key-Man Risk Auditcritical

Identify which client relationships, subcontractor agreements, and project management functions are tied directly to the owner. Assess whether a project manager or foreman can absorb responsibilities post-close.

Bonding Capacity Under New Ownershipimportant

Engage the surety directly to understand how a change of ownership affects existing bonds and future bonding capacity. New ownership may require financial statements and indemnity agreements to reset capacity.

General Contracting-Specific Due Diligence Items

  • Verify that all subcontractor relationships are documented with signed agreements and confirm no single sub represents more than 30% of project labor to reduce dependency risk.
  • Request a client concentration analysis — flag any single client representing more than 25% of trailing twelve-month revenue as a pipeline concentration risk.
  • Confirm all field supervisors and project managers hold required certifications including OSHA 30, and assess whether any licensed personnel plan to depart post-sale.
  • Review equipment schedules and assess whether owned equipment is in working condition, properly titled, and free of UCC liens that could complicate an asset acquisition structure.
  • Evaluate the company's bonding history including any bond claims, surety relationship strength, and single and aggregate bonding limits relative to current backlog size.

Frequently Asked Questions

Can I use an SBA 7(a) loan to acquire a general contracting business?

Yes. General contracting businesses are SBA-eligible. Expect to inject 10–15% equity, with lenders requiring license transferability confirmation, clean financials, and sufficient backlog to support debt service post-close.

What happens to the general contractor license when the business is sold?

License transfer rules vary by state. Some states allow entity-level license transfers; others require the buyer to qualify personally or designate a licensed qualifying agent. Confirm requirements with your state licensing board early in diligence.

How do I value a general contracting business with lumpy project revenue?

Normalize EBITDA across a three-year period to smooth project-cycle volatility. Lower middle market GC firms typically trade at 2.5x–4.5x normalized EBITDA, adjusted for backlog quality, owner dependency, and bonding capacity.

What deal structure is most common for general contracting acquisitions?

Asset purchases with SBA financing are most common. Deals often include a working capital peg, a holdback for retainage and warranty exposure, and a seller note or earnout tied to backlog conversion and post-close revenue milestones.

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