21. April 2026
Buy & build strategy: definition, mechanics and success factors
What is a buy & build strategy?
A buy & build strategy is an investment approach in which a private equity investor first acquires a so-called platform company and then systematically expands it through targeted add-on acquisitions. The aim is to create a scaled industry leader in a fragmented market through consolidation, which would not have been able to grow organically at this rate on its own.
In contrast to traditional buyouts, where value is primarily added through operational improvements or leverage, buy & build is an active growth strategy: the investor acts not only as a provider of capital, but also as the strategic architect of an entire group of companies.
Why Buy & Build? The strategic logic
Fragmented markets are the ideal breeding ground for buy & build. When hundreds of small providers exist side by side in an industry, without a natural market leader or scaled infrastructure, a structural arbitrage opportunity arises: individual companies are acquired at low multiples, while the consolidated platform achieves significantly higher valuations on exit. The mechanics behind this are known as multiple arbitrage.
There are also operational synergies: Centralized purchasing, shared IT infrastructure, bundled marketing and shared management capacities significantly reduce the cost base of the entire group.
The four phases of a buy & build strategy
Phase 1: Platform acquisition
The first step is to select the right platform company. This does not necessarily have to be the largest company in the market. The decisive factors are a stable earnings base, a scalable business model and a management team that is willing and able to support growth (through acquisitions). The platform defines the investment thesis: Which segments should be consolidated? Which geographies? Which brands or competencies should be added?
Phase 2: Add-on sourcing and acquisition
After the platform investment, the systematic search for suitable target companies begins. Successful buy & build investors engage in structured deal sourcing for this purpose. This includes proprietary database approaches, a network of management consultants and M&A advisors as well as directly approaching owners. The decisive factor here is not only the financial attractiveness of a target, but also the cultural fit: add-ons that do not fit the platform culturally jeopardize the quality of integration and therefore the overall success.
Phase 3: Integration and value creation
The quality of the integration determines whether a buy & build strategy actually realizes its theoretical value. Best-in-class investors establish an operational backbone: centralized functions such as purchasing, controlling, HR and IT that are available to all group companies without destroying their operational or cultural independence. The art lies in striking the right balance between standardization and autonomy.
Phase 4: Exit and value realization
After a few years, the exit is ready. Possible buyers are strategic investors, other PE funds (secondary buyout) or, if sufficiently large, the capital market. The size of the platform built up to this point, the market leadership and the institutional quality of the group determine the exit multiples that can be achieved.
Success factors: What makes Buy & Build really work
Not every buy & build strategy is successful. The literature and practice show that there are a few factors that determine success or failure:
Market selection:
Choosing the right market is the most important lever of all. A market must be fragmented enough to offer consolidation potential – but at the same time stable and capable of growth enough to support the investment thesis. Regulatory risks, technological disruption and cyclical dependencies must be priced in at an early stage.
Platform quality:
A weak platform company cannot be repaired with add-ons. On the contrary: acquisitions reinforce structural weaknesses. The platform must have resilient management, scalable processes and a clear market positioning.
Integration discipline:
Serial acquisitions without a systematic approach to integration lead to a confusing collection of individual companies – not a coherent group. Successful investors set up a dedicated integration team at an early stage and standardize onboarding processes for new add-ons.
Management depth:
The complexity of the Group increases with every acquisition. Buy & Build therefore requires continuous investment in management capacity – be it through the development of internal talent or the targeted recruitment of experienced managers at Group level.
Investor experience:
Buy & Build is not an approach for beginners. The ability to systematically analyze markets, source targets, structure transactions and manage integrations requires a team with a proven track record and deep sector expertise.
AUCTUS: Two prime examples of the market leader in Buy & Build
AUCTUS Capital Partners is the leading private equity firm for European SMEs and is the most experienced investor in the buy & build segment in Europe. Since its foundation in 2001, AUCTUS has realized over 470 company investments and has achieved the highest returns of all European private equity companies in the relevant segment in five fund generations. Two investments from the portfolio illustrate what consistent buy & build execution looks like in practice.
Builtech: From individual trade to European TGA platform
With its 360° expertise in technical building services, the Builtech Group is at the center of a long-term growth market and was the fastest growing buy & build platform in Germany. AUCTUS invested in a single trade company in 2018 and systematically built an integrated group. During the AUCTUS holding period, the group profit increased fifty-fold. At the time of the exit, Builtech comprised more than 50 individual companies, over 2,000 employees and an annual output of more than EUR 500 million. In 2020, an external group management team was appointed to drive the vision forward: to transform a highly fragmented, localized artisan landscape into a modern, scalable and European relevant TGA network. Builtech was successfully sold to the Dutch VDK Groep in 2025. Proof that the platform had also achieved maximum relevance for strategic buyers at European level.
PharmaLex: From German specialist to global life sciences champion
PharmaLex is one of the most impressive international buy & build examples from the AUCTUS portfolio. During the eight years of AUCTUS investment, PharmaLex recorded double-digit organic growth complemented by a determined international buy & build strategy. 38 add-ons, which strengthened the group in terms of product portfolio, global reach and coverage of key customers, helped PharmaLex to become the leading provider of specialized services to the life sciences industry. The platform grew from a German regulatory affairs specialist to a global group with over 1,200 experts in 40 locations and 19 countries. The transaction was completed at the end of 2022, when AUCTUS sold a majority stake to AmerisourceBergen (one of the largest healthcare groups in the world) for EUR 1.28 billion.
Both cases stand for the same basic idea: AUCTUS does not see itself as a classic financial sponsor, but as a strategic growth partner that gives companies the time, capital and expertise to turn a good medium-sized company into a European or global market leader.
Would you like to find out what a buy & build strategy could look like for your company? Get in touch with us.
About Auctus
With over 470 investments over the past 25 years, AUCTUS is the most active private equity firm focused on European SMEs. Our investments focus on majority shareholdings in companies with annual sales of between EUR 10 million and EUR 150 million.
AUCTUS stands for sustainable organic growth, but also inorganic growth through acquisitions. We achieve this in a trusting partnership together with the management of our companies. We specialize in building successful medium-sized groups of companies – we make market leaders. The more than 35 experienced AUCTUS investment experts currently manage around 50 platform investments from various sectors of the economy. The total of platform investments with a total of over 200 individual companies generates annual sales of over € 4 billion. Sales and earnings have been growing at >10% per year for years.
Our successful work is regularly rewarded with prestigious awards and top international rankings.