How to Finance a Construction Company Acquisition

From SBA 7(a) loans to seller notes and equity rollovers, understand the capital structures that close contractor deals in the $1M–$5M revenue range.

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Acquiring a licensed contractor business requires lenders to evaluate backlog quality, bonding capacity, and job-level margins — not just tax returns. Most lower middle market construction acquisitions use a layered capital stack combining SBA debt, seller financing, and buyer equity to bridge valuation gaps and manage transition risk.

Financing Options for Construction Acquisitions

SBA 7(a) Loan

$500K–$5MPrime + 2.75%–3.5% (variable); approximately 9%–11% current

The most common financing tool for construction acquisitions, allowing buyers to fund up to 90% of the purchase price with a 10% equity injection. Lenders assess backlog, bonding history, and normalized EBITDA.

Pros

Low equity injection (10%) preserves buyer working capital for operations and equipment
10-year repayment term lowers monthly debt service and improves day-one cash flow
Seller note of up to 10% can satisfy equity requirement when structured on full standby

Cons

×Lenders heavily scrutinize project-based revenue and may haircut backlog if contracts are short-term
×Bonding and insurance continuity must be confirmed pre-close or lender may condition approval
×Personal guarantee required; buyers with limited construction assets may face additional collateral demands

Seller Financing (Seller Note)

$100K–$700K6%–8% fixed; 5–7 year term

The seller carries a portion of the purchase price, typically 10–20%, often used alongside SBA debt to bridge valuation gaps or account for contingent liabilities from open projects and warranty exposure.

Pros

Signals seller confidence in business quality and smooths lender concerns about transition risk
Flexible structuring allows deferral of payments during seller transition period of 12–24 months
Reduces buyer's required cash at close when combined with SBA financing

Cons

×SBA requires seller notes to be on full standby for 24 months, delaying seller's actual cash receipt
×Seller may resist note if they are concerned about buyer's ability to maintain project margins post-close
×Subordinated position means seller note is unsecured if buyer defaults after SBA claim

Partial Seller Equity Rollover with Earnout

10%–20% of deal equity; earnout up to $250KN/A — equity structure; earnout thresholds set at 12%–16% gross margin targets

Seller retains 10–20% equity post-close with an earnout tied to backlog conversion and gross margin performance over 12–24 months, aligning incentives and reducing buyer risk on in-progress projects.

Pros

Keeps seller financially motivated to support project closeouts, client transitions, and employee retention
Reduces effective purchase price if backlog underperforms, protecting buyer from overpaying on WIP
Appeals to PE buyers and searchers seeking alignment on lumpy, project-based revenue streams

Cons

×Earnout disputes are common if project cost reporting is informal or job costing is inconsistently applied
×Seller may resist equity rollover if primary goal is a clean exit and full liquidity at close
×Requires detailed earnout agreement with clearly defined gross margin and backlog conversion metrics

Sample Capital Stack

$2,500,000 for a specialty commercial contractor with $2.2M revenue and $320K EBITDA

Purchase Price

Approximately $22,000/month on SBA loan at 10.5% over 10 years; seller note payments deferred 24 months per SBA standby requirement

Monthly Service

Estimated DSCR of 1.35x based on $320K EBITDA and $264K annual SBA debt service, meeting SBA minimum threshold of 1.25x

DSCR

SBA 7(a) loan: $2,000,000 (80%) | Seller note on standby: $250,000 (10%) | Buyer equity injection: $250,000 (10%)

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Lender Tips for Construction Acquisitions

1Present a formal WIP schedule and backlog report with contract values, margins, and completion percentages — construction lenders require this to underwrite revenue predictability beyond tax returns.
2Confirm bonding and insurance continuity before submitting an SBA package; lenders will condition approval on surety capacity transferring to the new owner without coverage gaps.
3Normalize EBITDA carefully by adding back owner compensation, personal vehicle expenses, and one-time project losses, and provide job-level cost reports to support your adjustments.
4Choose an SBA lender with construction sector experience; general-purpose SBA lenders often misunderstand percentage-of-completion accounting and will undervalue the business or decline unnecessarily.

Frequently Asked Questions

Can I use an SBA loan to buy a construction company with project-based revenue?

Yes. SBA lenders evaluate backlog quality, bonding capacity, and normalized EBITDA. Presenting a clean WIP schedule and 3 years of job cost reports significantly improves approval odds for contractor acquisitions.

How much do I need as a down payment to acquire a contractor business?

SBA 7(a) loans typically require 10% buyer equity injection. On a $2.5M deal, that is $250,000. A seller note on standby can sometimes satisfy part of this requirement, subject to lender approval.

What makes construction acquisitions harder to finance than other businesses?

Project-based revenue, percentage-of-completion accounting, contingent liabilities from open projects, and bonding continuity concerns make lenders more cautious. Buyers with industry experience and clean financials close more deals.

Is an earnout common in construction company acquisitions?

Yes. Earnouts tied to backlog conversion and gross margin over 12–24 months are frequently used in construction deals to protect buyers from overpaying on in-progress projects with uncertain final costs.

More Construction Guides

Buy a Construction Business →Valuation Guide →SBA Loan Guide →Deal Structure →Common Mistakes →SBA Calculator →Deal Structure Builder →

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