ENVIR ADVOCATEN
Romkeslaan 59
8933 AR Leeuwarden
T +31 20 236 10 24
F +31 20 796 92 22

ENVIR ADVOCATEN
Jan van Goyenkade 10 III
1075 HP Amsterdam
T +31 20 737 20 66
F +31 20 796 92 22

Derek Sietses

Derek Sietses is a partner of ENVIR Advocaten. Derek’s expertise covers administrative law, including environmental law, EHS matters and nature conservation law, as well as civil law, including contracts liability matters.

Derek has extensive experience in complex, politically sensitive cases, both representing local authorities, including municipalities, provinces and enforcement agencies, and companies and developers. In particular, Derek assists both government bodies and developers in various wind and solar projects on questions relating to contracting, permitting, civil law aspects and municipal taxes.

Derek Sietses linkedin

Romkeslaan 59
8933 AR
Leeuwarden

T +31 20 236 10 24
M +31 6 1588 6936
F +31 20 796 92 22

Derek is practical and efficient and brings a strategic and commercial approach to the table when assisting his clients. He is therefore well-placed to help his clients successfully navigate the complex legal context in which they operate.

Prior to joining ENVIR Advocaten in 2019, Derek worked for Stibbe Amsterdam in the administrative law and litigation department and at Trip Advocaten en Notarissen in Leeuwarden in the administrative law department. Derek regularly publishes in Dutch scientific and professional journals and gives lectures on various legal topics for a wide range of audiences. Derek heads ENVIR Advocaten’s Leeuwarden office.

One client appreciates the team’s ‘good tactical approach,’ further adding: ‘The lawyers were very pragmatic and helped us find solutions.’

Chambers, 2020

What the team is known for: Broad industry knowledge representing private sector clients from the energy field, as well as public sector clients such as municipalities and provinces. Noted for its extensive expertise of nature protection and conservation matters. Also represents clients in sensitive disputes concerning permits and developments. Has expanded the team with several new hires during 2019.

Chambers, 2020

The ENVIR Advocaten team is appreciated for its ‘highly qualified specialists who are very easy to work with’.

Legal 500 – EMEA 2019

The ENVIR Advocaten team provides ‘truly high standards and more than value for money’.

Legal 500 – EMEA 2019

ENVIR Advocaten has a new visiting address!

As per 19 March 2020, the Amsterdam office of ENVIR Advocaten is located at Jan van Goyenkade 10 III, 1075 HP Amsterdam. Our email addresses, phone numbers and P.O. box remain unchanged. In Leeuwarden, our visiting address continues to be Romkeslaan 59, 8933 AR Leeuwarden.