From SBA 7(a) financing to seller notes and earnouts tied to contract retention — here's how smart buyers and sellers are closing deals in the drain and sewer services market.
Drain cleaning and hydro jetting businesses trade at 2.5x–4.5x SDE in the lower middle market, with deal structures heavily influenced by the quality of recurring commercial contracts, fleet condition, and whether the owner-operator is truly replaceable. Because a significant portion of value in these businesses sits in equipment assets — hydro jetting trucks, CCTV camera systems, and vacuum excavators — asset purchase structures dominate, and lenders respond well to the tangible collateral. SBA 7(a) loans are widely used given the industry's eligibility, stable cash flows, and essential-service nature. Seller financing is almost always part of the conversation, particularly when buyers need comfort around customer retention post-close or when the seller's financials include owner add-backs that require a transition period to validate. Earnouts tied to commercial maintenance contract retention are increasingly common as a bridge between buyer and seller on valuation, especially where one or two municipal or restaurant-chain accounts represent a meaningful share of revenue.
Find Drain Cleaning & Hydro Jetting Businesses For SaleSBA 7(a) Loan with Seller Note
The most common structure for drain cleaning acquisitions in the $1M–$3M purchase price range. An SBA 7(a) loan covers 80–90% of the purchase price, with the seller carrying a subordinated note for 5–10% and the buyer contributing 10–15% equity. The SBA lender will require a business valuation, equipment appraisal, and review of the last 3 years of tax returns. Fleet assets — jetting trucks, CCTV units — serve as meaningful collateral alongside goodwill.
Pros
Cons
Best for: First-time buyers or owner-operators with a trades background acquiring an established drain cleaning company with clean financials, documented equipment, and 3+ years of tax returns showing consistent SDE above $300K.
Conventional Acquisition with Seller Financing
In deals above $2.5M or where buyers prefer to avoid SBA conditions, conventional bank financing or a direct lender covers 60–70% of the purchase price, with the seller financing 20–30% via a promissory note at 6–8% interest over 3–5 years. This structure is common when buyers are strategic acquirers — regional plumbing companies or home services platforms — who have existing lender relationships and want deal flexibility without SBA restrictions on seller notes.
Pros
Cons
Best for: Strategic acquirers such as plumbing companies adding drain and hydro jetting capabilities, or experienced operators acquiring a second location who want speed and flexibility over low equity contribution.
Asset Purchase with Earnout on Contract Retention
Structured as a full asset purchase of equipment, customer contracts, goodwill, and tradename, with a base purchase price paid at close and an earnout component of 10–20% of the total deal value paid over 12–24 months. Earnout triggers are typically tied to retention of named commercial maintenance accounts, municipal service agreements, or total revenue thresholds. This structure is most useful when the seller's recurring contract base is strong but buyer concern about post-close customer attrition is high.
Pros
Cons
Best for: Acquisitions where 30%+ of revenue comes from 2–4 commercial or municipal accounts, or where the seller is the primary relationship holder for key contracts and a 12–24 month transition is needed to transfer those relationships.
Owner-operator acquisition of a residential and light commercial drain cleaning business with one hydro jetting truck, two service vans, and CCTV inspection equipment. Clean financials, $420K SDE, no single customer over 15% of revenue.
$1,400,000
SBA 7(a) loan: $1,190,000 (85%) | Seller note: $105,000 (7.5%) | Buyer equity: $105,000 (7.5%)
SBA loan at 7.5% over 10 years — estimated monthly debt service of $14,100. Seller note subordinated to SBA, interest-only at 6% for 24 months, then fully amortizing over 36 months. Seller note on standby during SBA loan per standard SBA conditions. Buyer provides personal guarantee. Seller remains available for 90-day transition.
Regional plumbing company acquiring a hydro jetting specialist with two jetting trucks, a vacuum excavator, and $280K in annual commercial maintenance contracts with restaurants and a municipal storm drain account. Seller wants clean exit, some revenue concentration risk with municipal account at 22% of revenue.
$2,800,000
Conventional bank loan: $1,680,000 (60%) | Seller note: $840,000 (30%) | Buyer equity: $280,000 (10%)
Bank loan at 8.25% over 7 years — estimated monthly debt service of $26,200. Seller note at 7% interest over 5 years with 12-month interest-only period post-close. Earnout provision: if municipal account (currently $616K revenue) is not renewed in Year 1, seller note balance reduced by $120,000 as a credit against final payoff. Seller provides 6-month consulting agreement at $6,000/month to support municipal contract transition.
Private equity-backed home services platform acquiring a multi-crew drain cleaning and hydro jetting operation with $3.8M revenue, 6 technicians, and diversified commercial, residential, and municipal revenue. Seller is retiring and wants maximum liquidity at close with limited post-sale involvement.
$4,200,000
Senior debt (PE platform credit facility): $2,940,000 (70%) | Seller note: $630,000 (15%) | PE equity: $630,000 (15%)
Senior debt at negotiated credit facility rate (est. 8.0%), 5-year term with PE platform refinance option. Seller note at 6.5% over 4 years, fully amortizing, no standby requirement given non-SBA structure. No earnout — seller's clean financials, documented SOPs, and tenured technician team with signed retention agreements supported full payment at close. Seller provides 30-day knowledge transfer with no ongoing consulting obligation.
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Drain cleaning and hydro jetting businesses typically trade at 2.5x–4.5x SDE (Seller's Discretionary Earnings) in the lower middle market. Where a business lands in that range depends on the quality and predictability of recurring revenue — commercial maintenance contracts and municipal agreements command the higher end — as well as fleet condition, customer diversification, and whether a trained technician team will transition with the business. A sole-operator business with aging equipment and no contracts will trade closer to 2.5x, while a multi-crew operation with documented commercial accounts and late-model jetting trucks can justify 4x–4.5x.
Yes — drain cleaning and hydro jetting businesses are strong SBA 7(a) candidates because they generate stable, non-discretionary cash flows, have tangible equipment assets that serve as collateral, and typically show consistent SDE above the $300K minimum most SBA lenders prefer. The main requirements are 3 years of business tax returns, a formal equipment appraisal, and clean financial records. Buyers should expect a 60–90 day underwriting process and should be prepared to personally guarantee the loan. Owner add-backs are accepted but must be documented — lenders will not credit cash revenue that does not appear on tax returns.
The large majority of drain cleaning and hydro jetting acquisitions are structured as asset purchases. This allows the buyer to step up the tax basis on equipment — hydro jetting trucks, CCTV systems, and vacuum excavators can generate meaningful depreciation — and avoids inheriting unknown liabilities such as prior sewer damage claims, unresolved insurance disputes, or employment issues. Sellers sometimes prefer stock sales for capital gains tax treatment, so expect negotiation on this point. If the seller insists on a stock structure, buyers should conduct thorough insurance claims history review and require comprehensive representations and warranties around historical liabilities.
Earnouts in this industry are almost always tied to customer retention rather than revenue growth targets. A typical structure might hold back 10–15% of the purchase price and release it in installments over 12–24 months if named commercial accounts, restaurant grease trap contracts, or municipal service agreements remain active and billing at or above a defined revenue threshold. The key to an enforceable earnout is specificity — name the accounts, define the revenue floor, and state clearly who is responsible if an account is lost due to buyer operational changes versus organic attrition. Both parties should agree on the measurement methodology before signing the purchase agreement.
Equipment is a major component of value in hydro jetting acquisitions and should not be taken at the seller's book value. A hydro jetting combination unit on a commercial truck chassis can cost $150,000–$300,000 new, while CCTV inspection systems range from $20,000–$80,000 depending on capability. Buyers should hire an independent equipment appraiser or diesel mechanic familiar with drain cleaning equipment to assess condition, remaining useful life, and any deferred maintenance. Equipment in poor condition or near end-of-life should be reflected as a direct reduction in goodwill or purchase price — lenders and appraisers will flag this regardless, so buyers should surface it in negotiations before the deal is fully structured.
Technician retention is one of the highest-risk post-close challenges in drain cleaning acquisitions given the ongoing skilled labor shortage in the trades. Most deals are structured with confidentiality maintained until close, then a retention bonus pool — typically 3–6 months of additional compensation paid over 12 months contingent on staying with the new owner — is announced on day one. Buyers should also review employment agreements, non-compete clauses, and compensation structures for all licensed operators and hydro jetting technicians before close. In some acquisitions, the seller is asked to personally introduce the buyer to the team and communicate their endorsement of the transition, which meaningfully reduces early turnover risk.
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