The Rollup Playbook: How Private Equity Builds Empires by Buying Small

A rollup is the closest thing private equity has to a recipe. You buy ten, twenty, or fifty small businesses in the same industry. You merge them into one operating company. You professionalise the back office, install a single brand, and run the whole thing on a single P&L. Then, four or five years later, you sell the combined company to a larger buyer for many times what you paid to assemble it.

The mechanics sound simple. They are not always easy. But when the underlying industry cooperates and the operators are good, the strategy produces some of the most reliable returns in modern finance.

What a rollup actually is

A rollup, sometimes called a buy-and-build or a platform-and-tuckin strategy, is an acquisition program built around one repeated transaction. The buyer, usually a private equity firm or a publicly traded acquirer, identifies an industry where the operators are small, the work is essential, and ownership is scattered across hundreds or thousands of independent businesses. The buyer then acquires one company at a time, often at modest valuations, and folds each new acquisition into a single corporate parent.

Over a few years the parent grows by ten or twenty times. Revenue compounds. The accounting team, the marketing, the trucks, the insurance, the technology stack all get standardised. The owner-operators of each acquired business get a check, sometimes stay on as managers, and the financial sponsor builds a business that is much more valuable than the sum of the small businesses it absorbed.

Why the math works

The single most important fact about rollups is that small companies and mid-sized companies trade at very different multiples of earnings. A standalone HVAC company doing $1 million in EBITDA might sell for three to five times that earnings number, depending on the local market and the buyer pool. A regional HVAC platform doing $25 million in EBITDA, with professional management and twenty branches across three states, will frequently sell for eight to twelve times its earnings to a larger private equity firm or a strategic buyer.

The income did not change. Only the multiple changed.

This is called multiple arbitrage, and it is the engine of the entire rollup industry. The buyer pays three times for each tuckin, and sells the combined platform at nine times. The spread, on every dollar of acquired earnings, is six times the multiple expansion.

A simple example. Acquire ten small HVAC companies at $1 million of EBITDA each, paying four times earnings, for $4 million per acquisition. Total purchase price: $40 million. Now operate the combined ten-branch business for three years. Trim duplicate overhead. Run a single dispatch system. Win a few additional commercial contracts. EBITDA after consolidation: roughly $13 million. Sell at nine times. Sale price: $117 million. Even after fees, debt service, and the inevitable bumps, the equity multiple on this kind of program tends to fall between three and five times invested capital across a four-to-six year hold.

Why some industries are perfect rollup candidates

Not every fragmented industry is a good rollup. The historical winners share a small list of characteristics.

Recurring revenue or recurring need. Pest control, lawn care, vet clinics, dentists, HVAC service, plumbing, accounting, and IT managed services all see customers come back month after month or year after year. Recurring revenue is the closest thing to a cash flow guarantee, and it is what justifies the higher multiple a sophisticated buyer will pay for the combined platform.

Local trust and switching costs. Customers do not change their dentist or their accountant on a whim. They do not search the internet for a new HVAC technician the day their air conditioner breaks. Local relationships, once acquired, are sticky.

Fragmentation. The American economy still has hundreds of thousands of small businesses owned by founders in their fifties and sixties who want to retire. There are more than 100,000 independent HVAC companies in the United States alone. The supply of acquisition targets is essentially unlimited.

Operational improvability. A solo dentist running a single chair does not need a chief financial officer. A platform of forty dental practices needs a real accounting system, a centralised supply chain, and a managed-care contract specialist. The improvement levers are not subtle, and they translate directly into margin expansion.

Modest capital intensity. Rollups work best in businesses where each acquired company throws off cash quickly. Heavy capex businesses, like manufacturing or distribution, can still be rolled up, but the financing structure has to absorb the working capital needs.

The classic rollup industries

The list of industries that have been profitably rolled up over the past four decades is long, and it is worth memorising as a checklist of what the playbook actually looks like in practice.

• Funeral homes. Service Corporation International began acquiring family-owned funeral homes in the 1960s, and by the 1990s it was operating more than 4,000 locations. The strategy produced one of the great compounding stories of mid-century American business.
• Waste collection. Waste Management was built by buying hundreds of small municipal hauling companies through the 1970s and 1980s.
• Auto body shops. Boyd Group and Caliber Collision have rolled up the auto body industry across North America since the 2000s, with multi-billion dollar exits.
• Dental practices. Heartland Dental, Aspen Dental, and Pacific Dental Services are all rollups assembled by private equity sponsors over the last twenty years.
• Veterinary clinics. Mars (yes, the candy company) bought VCA Animal Hospitals for $9.1 billion in 2017, a rollup that had been a few decades in the making.
• Accounting firms. A wave of private equity acquisitions of regional CPA firms began in 2021 and is still actively running.
• HVAC and plumbing. ARS/Rescue Rooter, Wrench Group, and a half-dozen other platforms are mid-flight at the time of writing.
• Insurance brokers. Hub International, Acrisure, and BroadStreet Partners have each rolled up several hundred independent insurance brokerages.

The pattern is the same in every case. Small operator, modest multiple, predictable cash. Multiply by hundreds. Sell the platform.

The mechanics of a rollup program

The detailed work of a rollup program splits into four repeatable functions.

Sourcing. A real rollup firm runs proprietary deal flow. That usually means an internal business-development team making outbound calls to hundreds of small-business owners every quarter, plus a network of accountants, brokers, and bankers who tee up potential sellers. Inbound competition for the largest targets is fierce, but for the great mass of $500,000 to $3 million EBITDA businesses, sourcing is mostly grinding.

Diligence at scale. When you are buying twenty companies a year, you cannot run a six-month diligence on each. The winning rollup firms develop a standardised diligence process that runs in four to eight weeks per target, with playbooked accounting reviews, technology audits, customer concentration checks, and seller-financing structures.

Financing. The first acquisition in a platform is the hardest because it has to be done with mostly equity and a relatively small senior facility. Once the platform has reached a meaningful scale, usually around $10 million of EBITDA, traditional leveraged finance opens up. Acquisitions from that point on can be financed seventy to seventy-five percent with senior debt, leaving equity to fund the residual purchase price plus integration cash needs.

Integration. This is the part most underestimated by first-time rollup operators. Each tuckin needs to migrate onto the platform’s chart of accounts, payroll system, customer database, dispatch software, and brand. The operators who do this well treat integration as a permanent operating function, not as a project.

Recent examples worth studying

A handful of public rollup stories from the last decade illustrate the math in the open.

• HEICO Corporation is technically a public-company rollup of aerospace aftermarket parts businesses. Founded by the Mendelson family in the 1990s, it has compounded at roughly twenty percent annually for thirty years by buying small specialty aerospace suppliers.
• Constellation Software rolls up vertical-market software companies, hundreds of them, mostly under $5 million in revenue. Mark Leonard’s letters to shareholders are an unusually candid record of the rollup playbook in software.
• Brad Jacobs has built three large public companies via rollups: United Waste Systems (sold to USA Waste in 1997), United Rentals (assembled through more than 250 acquisitions in the late 1990s), and XPO Logistics (assembled through 17 acquisitions from 2011 to 2015).
• Solenis, a water-treatment specialty chemicals platform, was rolled up by Platinum Equity beginning in 2014 and sold to Platinum-controlled Solenis in 2021 for around $5.25 billion.

In each case the same recipe applies. Buy small, integrate, expand the multiple, exit.

Where rollups break

The history of failed rollups is shorter than the history of successful ones, but the failures share a few common features.

Industries that are fragmented but lack recurring revenue (auto dealers in the 1990s, for example) tend to roll up well during the buying phase and then suffer when end-customer demand shifts. Industries that rely on a single owner-operator’s personal relationships (think small law firms or boutique consulting practices) tend to lose revenue at every acquisition. And industries with heavy regulatory risk (long-term care, for example) can see margins crushed by a single legislative change.

The other recurring failure mode is operator overload. A first-time rollup operator who can comfortably run five branches will frequently struggle to run twenty, and the wheels can come off quickly. The firms that succeed at rollups treat the operating CEO as the most important hire in the program.

How to think about starting one

Most operators looking at a rollup for the first time do not need to invent a new industry. They need to identify an industry they already know, evaluate its fit against the criteria above, and build a relationship-driven sourcing engine for the smallest acquirable targets. The path from there is mostly arithmetic. Buy in the low single-digit multiples. Integrate aggressively. Add management talent ahead of need. Stay disciplined on price. Exit when the platform reaches the size where strategic buyers and large private equity sponsors will pay nine to twelve times for the combined business.

The reason this strategy keeps working, decade after decade, is not because nobody else has noticed it. It is because the underlying multiple gap between $1 million EBITDA businesses and $25 million EBITDA businesses is structural. Larger private equity firms cannot economically buy companies one at a time at the small end. They need platforms to deploy capital. As long as that structural gap exists, the rollup playbook will continue to produce some of the most reliable wealth in modern finance.