Deal structures for buying or selling a specialty contractor or general contractor business in the $1M–$5M revenue range — including SBA financing, earnouts tied to backlog conversion, and holdback escrows for warranty risk.
Acquiring a construction business in the lower middle market requires deal structures that account for the unique risks of project-based revenue, owner dependency, and contingent liabilities from open or completed work. Unlike a software or service business with predictable recurring revenue, a contractor acquisition requires buyers to think carefully about backlog quality, bonding continuity, license transferability, and the seller's role in estimating and client relationships. The most common structures combine SBA 7(a) debt financing with seller notes, earnouts tied to backlog performance, and escrow holdbacks to protect against post-close warranty claims or project disputes. Sellers who understand these structures can negotiate more effectively and avoid unnecessary concessions. Buyers who tailor deal terms to the specific risk profile of the target — whether a commercial general contractor, specialty trade, or industrial subcontractor — will close cleaner deals with fewer post-close surprises.
Find Construction Businesses For SaleSBA 7(a) Loan with Seller Note
The most common structure for lower middle market construction acquisitions. A buyer uses an SBA 7(a) loan to finance 70–80% of the purchase price, contributes 10–20% equity, and the seller carries a subordinated note for the remaining gap. The seller note is typically on standby for 24 months per SBA requirements, meaning no principal payments during that period. This structure is especially effective when the business has 3+ years of clean financials, transferable licenses, and an established bonding relationship that a surety will continue post-close.
Pros
Cons
Best for: Asset-light specialty contractors or commercial subcontractors with 3+ years of profitable operating history, transferable licenses, clean job cost records, and an owner willing to stay on for 12–24 months post-close.
Partial Seller Equity Rollover with Earnout
The seller retains 10–20% equity in the business post-close, with an earnout tied to specific performance metrics over 12–24 months — most commonly backlog conversion rates, gross margin per project type, or EBITDA thresholds. This structure is used when the buyer wants the seller deeply invested in post-close performance, particularly in businesses where the owner controls key client relationships, the estimating process, or relationships with a primary general contractor. The rollover equity is typically bought out at a pre-agreed multiple once the earnout period expires.
Pros
Cons
Best for: Businesses where the owner is the primary estimator and client relationship holder, or where a significant portion of revenue comes from a small number of general contractors or repeat commercial clients that require seller-led introductions to transfer.
Asset Purchase with Holdback Escrow
The buyer acquires specific business assets — including equipment, contracts, licenses, customer relationships, and goodwill — rather than the legal entity. A portion of the purchase price (typically 5–10%) is held in a third-party escrow account for 12–24 months post-close to cover potential liabilities from warranty claims, mechanic's liens, project disputes, or bonding issues that surface after closing. This is the preferred structure for buyers concerned about hidden liabilities in the seller's project history, especially in commercial or industrial work with multi-year warranty obligations.
Pros
Cons
Best for: Buyers acquiring a commercial, industrial, or government contractor with a history of large projects, subcontractor-heavy operations, or any unresolved warranty exposure, disputes, or lien waivers that have not been fully documented in due diligence.
SBA-Financed Acquisition of a Specialty Trade Contractor
$1,800,000
SBA 7(a) loan: $1,350,000 (75%) | Buyer equity injection: $270,000 (15%) | Seller note (subordinated, on standby): $180,000 (10%)
10-year SBA loan at prevailing rate (approximately 9–10.5% as of 2024); seller note at 6% interest, 5-year term, interest-only for first 24 months per SBA standby requirements; seller transitions over 18 months in estimating and client relationship support; all contractor licenses confirmed transferable prior to close; bonding company notified and surety relationship maintained under new ownership.
Earnout-Heavy Structure for Owner-Dependent Commercial Contractor
$2,400,000 (base) + up to $400,000 earnout
Cash at close: $1,560,000 (65%) | Seller equity rollover at 15%: $360,000 | Earnout potential: $400,000 paid over 24 months based on backlog conversion and gross margin performance | Seller note: $480,000 (20%) at 6.5% over 5 years
Earnout triggers: $400,000 paid in two tranches — $200,000 at month 12 if trailing 12-month gross margin exceeds 22% and backlog conversion rate exceeds 85%; $200,000 at month 24 if same thresholds maintained; seller rollover equity bought out at 3.5x EBITDA at end of earnout period; seller remains as VP of Business Development during earnout with defined scope of responsibilities and non-compete post-buyout.
Asset Purchase with Holdback for Industrial Subcontractor with Legacy Project Exposure
$3,200,000
Cash at close: $2,880,000 (90%) | Holdback escrow: $320,000 (10%) held for 18 months
Asset purchase structure excluding pre-close liabilities; holdback escrow administered by neutral third-party escrow agent; escrow released pro-rata as open warranty periods expire and lien waiver documentation is confirmed for all projects completed in prior 36 months; buyer secures new contractor licenses and bonding in its own name within 45 days of close; seller provides full indemnification for pre-close project disputes, tax liabilities, and worker classification claims for 3 years post-close; purchase price allocated to equipment (fair market value), customer relationships, and goodwill with buyer receiving step-up tax basis.
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The most common structure is an SBA 7(a) loan covering 70–80% of the purchase price, a buyer equity injection of 10–15%, and a subordinated seller note covering the remaining 10–15% gap. The seller note is typically placed on standby for the first 24 months per SBA program requirements. This structure works well for licensed, bonded specialty contractors with 3+ years of financials and an owner willing to transition over 12–24 months.
An earnout in a construction acquisition ties a portion of the purchase price to post-close performance metrics, most commonly backlog conversion rates, gross margin by project type, or trailing EBITDA. For example, a seller might receive an additional $200,000–$400,000 if the business maintains a 20%+ gross margin and converts 85% or more of signed backlog into billed revenue over 12–24 months. Earnouts are particularly useful when the seller controls key client relationships or estimating functions and the buyer needs the seller invested in a clean handoff.
A holdback escrow is a portion of the purchase price — typically 5–10% — held by a neutral third party for 12–24 months post-close to cover potential liabilities that surface after the sale, such as warranty claims, mechanic's liens, or project disputes. Buyers should use holdback escrows when acquiring contractors with a history of large commercial or industrial projects, complex subcontractor relationships, or any unresolved lien or warranty exposure identified during due diligence. The holdback is released in tranches as projects close out and warranty periods expire.
Asset purchases allow the buyer to select which assets and contracts to acquire without assuming the seller's historical liabilities, including pre-close tax obligations, unresolved disputes, or legacy bonding claims. The buyer also receives a step-up in tax basis on acquired assets, improving depreciation benefits on equipment and intangibles. The primary complication with asset purchases in construction is that contractor licenses, bonding, and subcontractor agreements may not transfer automatically and require reapplication or renegotiation, which must be addressed as a closing condition.
A seller note means you are effectively lending a portion of the purchase price to the buyer, to be repaid over time with interest. In SBA-financed deals, the seller note is typically subordinated to the bank loan and placed on standby for the first 24 months, meaning you receive interest only (or nothing) during that period. Seller notes typically carry 5–7% interest rates and 5-year terms. While sellers often prefer all-cash deals, accepting a seller note can make your business more financeable, increase the total buyer pool, and sometimes result in a higher headline purchase price in exchange for the deferred payment structure.
The most common earnout triggers in construction acquisitions are: gross margin percentage maintained across completed projects (e.g., 20–25% gross margin threshold), backlog conversion rate (percentage of signed contracts that convert to billed revenue within the earnout period), trailing 12-month EBITDA against a defined baseline, or revenue from specific customer segments or project types the buyer is underwriting. Buyers should avoid using revenue alone as an earnout metric in construction, as revenue can grow while margins erode due to cost overruns or poor estimating — gross margin and EBITDA thresholds are more protective.
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