Two Disciplines, One Planning Process
Under the German HOAI fee structure, structural engineering and building physics are separate scopes of service – with distinct fee structures, their own compliance obligations and clearly delineated responsibilities. In practice, however, both run through the same work phases.
The structural engineer is responsible for structural stability, load transfer and construction – from the first preliminary design through to detailed design. The building physicist provides verifications for thermal insulation, acoustic insulation and moisture protection, as well as calculations for fire protection and the energy requirements set out in the German Building Energy Act (GEG). Both services are mandatory under building law and cannot be substituted. No approval process can be completed without them.
For platforms and strategic buyers, this parallel relevance matters: bringing both scopes of service together within one group reduces coordination effort, simplifies project handling for architects and clients, and increases the likelihood of being retained on follow-on projects. In practice, the most attractive firms increasingly bundle these two core disciplines with adjacent fields – such as structural dynamics, technical due diligence, or existing-building and façade consulting.
The Drivers: Why the Market Is Heating Up
Three structural trends explain why specialized engineering firms in this segment are receiving more attention today than they were five years ago.
ESG regulation and the renovation wave. The EU Energy Performance of Buildings Directive (EPBD recast) requires member states to implement comprehensive renovation roadmaps by 2030. This means rising demand for energy performance verifications, thermal-insulation calculations, acoustic assessments and renovation concepts – all classic fields of work in building physics. In parallel, new requirements are emerging around life-cycle analyses and sustainability certifications (DGNB, LEED), for which building physicists are increasingly sought as expert assessors. On top of this, the revitalization and energy-related modernization of existing building stock is developing into a growth field in its own right – particularly in building construction, where change of use, vertical extensions and structural upgrading call for both structural and building-physics expertise.
Sustained construction and modernization demand in building construction. Demand-side momentum in building construction remains robust. The structural housing shortage is driving residential and neighborhood development; municipal and institutional clients are maintaining their programs in social housing and in educational, healthcare and administrative buildings; and the EUR 500 billion special fund for infrastructure and climate protection is providing additional impetus for modernizing the public building stock. At the same time, the market for logistics and commercial real estate ranks among the fastest-growing segments of the construction industry. This demand secures the base workload of structural-engineering and building-physics firms with building-construction expertise for years to come.
Generational change and unresolved succession. The average age of engineering-firm owners is now above 55. Many have no internal successor and no succession strategy – and therefore face a decision that can no longer be deferred. This push factor is one of the principal drivers behind the currently high level of M&A activity in the segment.
A Market in Transition for Structural Engineering and Building Physics
Structural engineering and building physics are disciplines that grew for a long time without outside attention: owner-led, regionally rooted, and focused on project quality. That is exactly what is now beginning to shift.
The market is deeply fragmented: a large number of small and mid-sized firms serve a local catchment area, often working with the same clients for decades. What has kept this structure stable – proximity to clients, technical trust, personal continuity – is becoming a burden in an environment of rising regulatory requirements, a BIM mandate and a growing skills shortage.
Firms that operate independently today face investments in digitalization, certifications and recruiting that rarely pay off for a single practice. Within a network or platform structure, by contrast, these costs can be shared – and that is precisely where value is increasingly concentrated: in firms that combine technical depth with a broad, multidisciplinary service profile.
Who Is Already Consolidating: Active Platforms in the Market
The consolidation movement is no longer a forecast – it can be read directly from concrete market structures.
Specialized private-equity investors and buy-and-build players are deliberately assembling integrated groups of building-construction planning firms – with a focus on structural engineering, building physics, building services engineering (MEP) and project management. The prevailing model follows a similar logic: decentralized operational responsibility within the individual firms, combined with a central back office for finance, HR and IT. Local brands and established owner personalities are retained, and shared structures such as BIM centers of excellence and central recruiting units strengthen the affiliated locations.
What stands out is the breadth of target profiles. Alongside mid-sized structural-engineering firms with a broad project base, pure building-physics boutiques with specialist expertise are increasingly coming into focus – for example in noise-immission control, thermal building physics and building certification. Initial transactions in precisely this segment show that highly specialized niche providers are sought-after targets too.
All these players share a similar rationale: what they are looking for is not revenue scale, but technical substance, well-developed client relationships and capabilities that can be integrated into a larger network.
What Investors Are Specifically Looking For
For buyers and platforms active in the structural-engineering and building-physics segment, a number of recurring assessment criteria stand out.
Technical specialization and depth. The more specific the competency – for instance timber structures, special structures, structural dynamics, acoustics or building certification to DGNB standards – the higher its strategic relevance. The breadth of the service portfolio is becoming increasingly important as well: firms that combine their core disciplines of structural engineering and building physics with adjacent fields such as structural dynamics, technical due diligence, existing-building and renovation consulting, or integrated façade structural engineering create a multidisciplinary profile with high value creation – and differentiators that are not easily replicated.
Quality and predictability of the order book. What matters is less a high share of public-sector clients – public tenders are demanding and bring their own pressures. More valuable is a broadly diversified client base spanning the private sector and public authorities, covering construction projects across several asset classes – from residential, office and commercial through logistics to existing-building and revitalization projects. Recurring clients, long-standing framework relationships and a high repeat-business rate create predictability and lift valuations. Buyers favor firms in which no single client accounts for more than 20% of revenue.
Organizational independence from the owner. A firm built operationally around its owner represents a risk for any buyer. An established second tier of management, documented processes, low staff turnover and know-how distributed across several shoulders are direct valuation levers.
BIM capability and degree of digitalization. Firms that have implemented BIM processes in a standardized way achieve higher EBITDA margins and are considered easier to integrate. For structural engineers, this means in concrete terms: structured calculation models, digital collaboration tools and interfaces to architectural and MEP planning. The level of maturity in working with data-driven and AI-supported planning and optimization processes is increasingly relevant as well.
What This Means for Owners
The market is sending a clear signal: demand for qualified engineering firms in structural engineering and building physics exceeds the available supply of attractive targets. Platforms are active, capital is available, and the structural need for succession is creating a window of opportunity that has rarely been this favorable.
For owners – whether a mid-sized structural-engineering firm with a broad project base across several asset classes, or a specialized building-physics firm with niche expertise – the implication is this: strategic options should be examined today, not only once succession pressure arises from the outside. Those who understand how their own business fits into a platform logic, and who identify the right counterparts early, retain control over timing, structure and valuation.
For a confidential discussion about strategic options, MIND is available at any time.
