The Stuttgart-based business, which employs 750 staff generating an annual revenue of €500m, has been sold to Zech Group.
Ruud Joosten, CEO Royal BAM Group, said: “This transaction is a major step forward in delivering our strategy Building a sustainable tomorrow.
“BAM is focusing on growth markets in the Netherlands, United Kingdom and Ireland, where we have scale and competitive advantage.
“In other markets we are managing our subsidiaries for value and potential divestment.”
BAM’s UK construction and civils operations both recorded a 40% rebound in revenue during the first half of this year.
The improved performance saw BAM construction and property return to £18.3m profit in the first half after a loss of £12m in the previous Covid-hit first half of 2020. The rebound was also supported by a claim settlement.
Confidence was also bolstered with BAM Construction’s largest-ever contract win at £253m for Manchester’s Co-op Live Arena.
BAM Nuttall also notched up a 40% revenue rise in the UK, driving overall Royal BAM civils up by 20%.
The civils arm remained bigger than the building business with first-half revenue of £539m, but profit was slightly lower than the building business at £16.4m.