Why Customer Concentration Matters More Than Ever in Distributor Valuations

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The distribution industry has spent the last several years navigating supply chain disruptions, inflationary pressures, labor shortages, and shifting end-market demand. More recently, another trend has begun reshaping the landscape: accelerated consolidation among contractors.

While much of the conversation around contractor mergers and acquisitions focuses on market share, purchasing power, and competitive dynamics, there is another important implication that deserves attention. As contractors grow larger through acquisition, customer concentration risk becomes an increasingly important factor in distributor valuations.

For distributors, the customer base has always been a key driver of value. Revenue growth, profitability, and market position matter, but investors and acquirers also look closely at where that revenue comes from. A distributor generating $100 million in revenue from hundreds of customers presents a very different risk profile than one generating the same revenue from a handful of large contractors.

Historically, many distributors benefited from highly fragmented customer bases. Thousands of independent contractors created a diverse revenue stream with limited exposure to any single customer relationship. If one contractor left, the impact was often manageable.

That dynamic is changing.

Across HVAC, plumbing, and electrical services, private equity-backed platforms have been actively acquiring independent contractors and rolling them into larger regional and national organizations. What was once five or ten separate customer relationships may now be one customer with centralized purchasing, standardized vendor programs, and significantly more negotiating leverage.

The HVAC industry provides a good example. Companies such as Wrench Group, TurnPoint Services, and Heartland Home Services have spent years acquiring independent contractors across the country. In many markets, distributors that once sold to several locally owned businesses now find those accounts operating under a larger umbrella organization. While the trucks may carry the same local brand names, purchasing decisions are increasingly influenced by corporate leadership focused on driving efficiencies across the platform.

For distributors, this creates both opportunity and risk.

On one hand, larger contractor organizations can drive meaningful sales volume. A distributor that secures preferred vendor status with a growing platform may see revenue increase substantially. These relationships can become strategic partnerships that create stability and support long-term growth.

On the other hand, the same relationship can increase concentration risk. If a single contractor platform begins accounting for 10%, 15%, or even 20% of a distributor's revenue, the business becomes more vulnerable to a change in purchasing strategy. A corporate decision to consolidate vendors, negotiate more aggressive pricing, or shift spend to a competitor can have an immediate impact on financial performance.

This is one reason customer concentration receives so much attention during M&A due diligence.

Buyers are not simply evaluating historical earnings. They are evaluating the durability of those earnings. A distributor generating strong EBITDA today may receive a lower valuation multiple if a significant portion of revenue depends on a small number of customers. The concern is straightforward: future cash flow becomes less predictable when too much of it is tied to a handful of relationships.

Consider two distributors with identical revenue, EBITDA margins, and growth rates. The first generates 30% of its revenue from two large contractor platforms. The second has no customer representing more than 5% of sales. Most acquirers would view the second company as carrying less risk because its revenue base is more diversified. If a customer leaves, the impact is far less severe.

That distinction can translate directly into valuation.

Importantly, customer concentration is not inherently negative. In fact, relationships with large contractors often reflect strong execution, superior service, and a trusted market position. The issue is not whether a distributor serves large customers. The issue is whether the business becomes overly dependent on them.

As contractor consolidation continues, distributors may need to become more deliberate in how they balance growth and diversification. Winning large accounts remains essential, but maintaining a healthy mix of customers can help preserve both negotiating leverage and enterprise value.

The broader takeaway is that contractor M&A is influencing distributors in ways that extend beyond day-to-day operations. It is changing the composition of customer bases, altering bargaining dynamics, and increasingly affecting how investors assess risk.

In an environment where contractor consolidation shows little sign of slowing, distributors that actively monitor customer concentration may be better positioned to protect earnings, maintain flexibility, and ultimately command stronger valuations when the time comes to pursue a transaction.

Growth will always matter. But in today's market, who that growth comes from may matter just as much.

As distributors evaluate the impact of customer concentration and other value drivers, access to objective valuation insights can be beneficial. Through its partnership with ASA, The Beringer Group offers complimentary valuation services to ASA members as part of an ongoing effort to help business owners better understand and maximize enterprise value.

By Brad Williams

Brad Williams is Managing Director for The Beringer Group. With over 15 years of experience in investment banking, Brad Williams offers expert advice on succession planning, including mergers, acquisitions, and inter-family transition strategies for PHCP businesses. Brad can reached at bwilliams@theberingergroup.com