Definition
Buy-and-build describes developing a business through a platform investment, additional acquisitions, and work on the combined operations. Its proposed rationale might involve service coverage, capability breadth, or more consistent operating processes. The strategy needs a stated mechanism: saying that a market contains many businesses does not explain why those businesses should be combined.
A researchable thesis identifies both supporting evidence and conditions that would undermine it. Shared customer requirements might support a capability combination; incompatible workflows or reliance on nontransferable relationships might challenge it. The acquisition programme, integration plan, and financing arrangements are separate questions. None can be inferred simply because a target fits the same broad sector as the platform.
In origination work
Map potential add-ons against the platform's actual operating needs. Preserve ownership history so acquired brands are not mistaken for independent targets. Ask whether candidate companies fill a specific gap, duplicate existing capacity, or introduce a different business model. Keep acquisition availability distinct from strategic fit, and update the map when targets change ownership. A list of apparently suitable companies is evidence for further investigation rather than proof that a programme can be executed.
The mechanism behind the strategy
Buy-and-build rests on a claim that the combined business is worth more than the parts. Commonly proposed mechanisms include route or territory density, broader service offerings sold to the same customers, shared back-office costs, and stronger purchasing. Each mechanism is testable in principle. Route density can be examined against addresses and drive times; cross-sell against whether customers already buy the adjacent service from someone else; back-office savings against what each target actually spends on administration.
Academic work on private equity-backed buy-and-build programmes documents that sponsors use acquisitions as a growth path and studies how these programmes are carried out, but a general finding does not validate a particular thesis. Whether a given sequence of purchases creates value depends on price paid, integration quality and the market, none of which a sector label reveals.
Where the evidence cuts against the pitch
A fragmented market does not by itself justify consolidation. Fragmentation can persist because local relationships, licensing, or customer preference make scale unhelpful. A count of independent operators is also easily inflated by branches, brand names and affiliated entities, so the number that looks like opportunity may be half the real figure. Concentration measures used by antitrust agencies exist to avoid exactly this kind of loose claim, and they can be applied to a defined local market.
Regulatory attention is a second factor. Transactions above the size thresholds also require premerger notification under the Hart-Scott-Rodino programme. The agencies' merger guidelines state that a series of acquisitions may be examined together. That does not make the strategy improper; it does mean a programme that concentrates a local market should be planned with that in mind and with competent legal advice, which is outside the scope of desk research.
Turning the thesis into research
Write the thesis as a set of falsifiable statements and decide in advance what evidence would count against each. For route density, an example is: at least a stated share of the platform's customer addresses fall within a stated distance of the candidate's base. For cross-sell: a stated share of candidate customers are of a type that already purchases the platform's service. Researchers then collect the evidence and report the result with its gaps, whatever the answer is.
Keep a running log of what the programme has learned: which add-ons fit, which did not, and why. After several acquisitions that log is more valuable than any initial screen, because it shows which assumptions held in practice. It is also the basis for revising the target criteria without quietly changing what counts as a fit.
Related terms
- Platform company — A business used as the operating base for a private equity strategy and potential subsequent acquisitions.
- Add-on acquisition — An acquisition made to extend an existing platform's operations, capabilities, customer base, or geographic coverage.
- Roll-up — A strategy of bringing multiple businesses in a defined market under common ownership or operating control.
Further reading
- Acquisition theses as research questions
- Thesis: route-density roll-up
- Thesis: technology-enabled services
- Market mapping
- Playbook: HVAC services
- Article: sizing a market with CBP, QCEW and SUSB
- Article: testing whether a target universe is complete
Sources and further reading
- Inorganic growth strategies and the evolution of the private equity business model, Journal of Corporate Finance (2017). A study of the inorganic growth, including add-on acquisitions, that private equity-backed companies pursue.
- 2023 Merger Guidelines, U.S. Department of Justice and Federal Trade Commission (2023). How the agencies say they analyse a transaction, including concentration thresholds and serial acquisition.
- Herfindahl-Hirschman Index, U.S. Department of Justice. The concentration measure the agencies use, and a discipline for claiming an industry is 'fragmented'.
- Leveraged Buyouts and Private Equity, Journal of Economic Perspectives (2009). The standard survey of how buyouts are structured and what the evidence says about their effects.
To apply these distinctions to your own acquisition criteria, discuss your research brief or inspect the demo platform.