Why succession in an engineering firm is particularly demanding
Generational change affects small and medium-sized businesses across Germany. 57% of owners of German SMEs are aged 55 or older, and around 109,000 businesses a year are seeking a successor through to the end of 2029 (KfW Research, Nachfolge-Monitoring Mittelstand 2025, January 2026). One in four is considering closing the business rather than handing it over.
Engineering and planning firms face this development within a highly fragmented structure. There are just under 80,000 engineering firms in Germany. In the industry survey by AHO, the Federal Chamber of Engineers (BIngK) and the Association of Consulting Engineers (VBI), around half of the participating engineering firms employed no more than seven people. In firms of this size, business development, project management and technical responsibility often rest with one or two people. Three features distinguish succession in an engineering firm from a handover in retail or manufacturing.
Personal client relationships. Planning contracts are built on trust in individuals. Private clients commission the engineer they know. In tender procedures, public contracting authorities often assess the qualifications and experience of the nominated project team as well as the firm's references (Section 58(2) No. 2 of the German Public Procurement Ordinance, VgV). Before the owner steps down, this trust must already have passed to other people.
Personal authorisations. The authorisation to submit building applications, certification rights for structural stability or fire safety, and recognition as a checking engineer (Prüfingenieur) or as an expert are tied to individuals, not to the firm. The same applies to the professional title 'Beratender Ingenieur' (Consulting Engineer), which is protected under state law and was held by 13,381 chamber members nationwide at the end of 2025 (Federal Chamber of Engineers, membership statistics as at 31 December 2025). A successor must either bring these qualifications or find them within the firm.
Liability periods. In practice, claims for defects in planning services in construction can extend well beyond the usual warranty periods. Delayed project acceptance and case law on the planner's follow-on obligations mean that the real liability risks for engineering firms often span longer periods. Every succession solution therefore requires clear arrangements on who is responsible for these legacy projects and how this risk is properly covered.
Which succession options are open to owners
Across German SMEs as a whole, 55% of owners planning a succession would prefer a handover within the family, 42% are considering an external buyer, 28% their own employees and 24% co-owners (KfW Research, multiple answers possible). Taking over an engineering firm requires an engineering degree and usually several years of professional experience. This narrows the pool of potential successors within the family and brings the other routes to the fore. Five options can be distinguished.
Handover within the family. This is an option if a family member has the professional qualifications and wants to run the firm. The advantage lies in the long induction period and in keeping the name.
Takeover by partners or managers. In a management buy-out, that is a takeover by the firm's own management, long-standing project managers or junior partners acquire the shares. In planning firms, this often happens in stages over several years. Clients and employees already know the new shareholders.
Takeover by an external individual. Engineers who want to become self-employed can take over an existing engineering firm instead of starting a new one. Chambers and professional associations support the search with their own succession services. This route suits smaller firms in particular, whose purchase price an individual can finance.
Sale to an engineering group. Larger planning companies and international engineering groups acquire firms to add regions, disciplines or capacity. In many cases, the firm can remain in place as a location with its own management.
Sale to a financial investor. For several years, private equity firms have been building platforms that bring several firms together under one roof (buy and build). Owners usually sell a majority stake and retain a share in further growth through a reinvestment, that is, a stake of their own in the group. MIND's article on the consolidation of engineering firms in building construction and infrastructure describes which buyers are active.
How internal succession and an external sale differ
The five options can be grouped into two basic directions: the firm stays in the hands of people from its own circle, or it passes to an external acquirer. Four criteria show the differences.
Purchase price and financing: Internal successors pay from their own funds and bank loans. The purchase price is therefore often lower or spread over time, for example through a vendor loan, where the owner defers part of the price. Groups and investors pay the larger part when the deal closes and often link the remainder to future results (earn-out). Across German SMEs, 18% of businesses see the successor's financing as an obstacle (KfW Research).
Continuity for employees and clients: The internal solution changes the least, as the name, contacts and ways of working stay the same. In an external sale, continuity depends on the buyer's model. Whether brand, location and management are retained is a matter for negotiation and should be settled before signing.
The owner's role after the handover: In an internal solution, the owner usually withdraws gradually over several years, handing over responsibility along with the shares. External buyers generally agree a transition period of one to three years. With a reinvestment, the owner remains tied in as an entrepreneur for longer, but can already step back from day-to-day operations.
Transaction certainty: Internal succession depends on a few individuals. If a candidate withdraws or the financing falls through, the search begins again. A structured sale process with several interested parties reduces this dependency, but requires preparation and confidentiality. 69% of German SMEs cite finding a suitable successor as the biggest obstacle (KfW Research).
The two directions are not mutually exclusive. A firm can prepare the internal solution while examining what an external acquirer would offer. Some groups, often backed by financial investors, also give the second management tier a stake, so that the sale and the internal succession coincide.
How long succession in an engineering firm takes and which phases it involves
The German Chamber of Industry and Commerce (DIHK) recommends starting concrete planning at least three years before the desired handover. Owners of German SMEs who are aiming for a short-term succession are already 66.5 years old on average (KfW Research). This limits their options and weakens their negotiating position. The process falls into four phases.
Clarify objectives. The starting point is the desired timing of the exit, the owner's own role afterwards and the priorities between purchase price, continuity and the firm's independence. These answers determine which options are worth considering.
Build transferability. In this phase, managers take on their own client relationships and project responsibility. Authorisations and chamber registrations are spread across several people, and the financial figures are prepared.
Implement the handover. In an internal solution, valuation, financing and the amendment of the articles of association follow. In a sale, a structured process runs from preparing the documentation and approaching selected buyers through due diligence, the buyer's examination of the firm, to the purchase agreement. MIND explains how such a process is structured under Sell-Side M&A.
Support the transition period. The previous owner completes ongoing projects, introduces clients personally to the new management and remains available for liability issues arising from legacy projects.
What determines the value of an engineering firm in a succession
The basis of every valuation is sustainable earnings. To determine them, the results are adjusted: the owner's salary is set at a market rate and one-off effects are removed. How highly a successor values these earnings depends on how reliably they can be expected after the handover. MIND sets out valuation ranges and buyer groups on its page Sell an Engineering Firm. An initial company valuation can be carried out with our value calculator. Four factors determine transferability.
Dependence on the owner. A firm in which business development, costing and technical sign-off rest with one person loses part of its earning power when that person leaves. Buyers and banks price this risk in.
Second management tier. Managers with their own project and client responsibility are the most important prerequisite for every option. They are the obvious internal successors and at the same time the strongest argument with external buyers.
Client and order structure. Framework agreements, recurring clients and low dependence on individual clients increase predictability. In mid-2026, engineering firms had an average order backlog of 11.3 months (economic survey by AHO, BAK, BIngK and VBI, August 2026). A firm that exceeds this figure and can prove it negotiates from a stronger position.
Transparent figures and processes. Project controlling, post-project cost analysis and documented progress show a successor where the firm makes its money. Without them, the review takes longer and the uncertainty depresses the price.
What this means for owners of engineering and planning firms
There is no general recommendation for any one of these options. Owners pursue different goals: for some, preserving the firm in its current form is the priority, for others it is financial security or access to larger projects. Succession in a planning firm therefore starts with a few questions. For owners, this means honestly assessing whether the firm is currently sufficiently prepared. It also means clarifying who in the firm can and wants to take on responsibility, and what role they themselves wish to play after the handover.
Three points summarise the analysis. Engineering firm succession needs more lead time than in other sectors, because relationships, authorisations and liability are tied to individuals. Internal succession and an external sale can be prepared in parallel. Anything that increases the firm's transferability improves every one of these options at the same time.
MIND supports owners in weighing up these routes as part of its succession advisory. MIND is available at any time for a confidential discussion of strategic options.
Note: This article is for general information only and does not constitute legal or tax advice in individual cases.
