Duet advocaten B.V.

Construction and public procurement

Nienke has specific expertise in forms of cooperation in complex construction and renovation projects. In such projects, she drafts tender documents and contracts and supervises the tender procedures.

Examples of projects in which Nienke has been involved include the strengthening of the Markermeer dykes for the Hoogheemraadschap Hollands Noorderkwartier, the dismantling and decontamination of the Thermphos phosphorus plant, the renovation of the Dom Tower, the renovation of Lelylaan railway station, and several tenders within the Amsterdam Road Tunnels Programme, including the new Amsterdam Traffic Control Centre.

Nienke also has a particular affinity with, and many years of experience in, the procurement of care in the social domain (youth care and Wmo) and in the development of realistic rates.

Since 2019, she has been a member of the Corporate Tender Board of Rijkswaterstaat, where she advises on tenders and contract forms for the largest construction projects in the Netherlands.

Nienke has been ranked as "Leading Individual Construction" in The Legal 500 in 2023, 2024 and 2025.

Dutch and English

Nienke is a member of the  Dutch Association for Procurement Law (Nederlandse Vereniging voor Aanbestedingsrecht) and the Association of Construction Lawyers (Vereniging voor Bouwrecht Advocaten).

Nienke has a Dutch Law degree.