Welcome to Tasman Law


Welcome to Tasman Law


Welcome to Tasman Law Ltd. Tasman Law’s lawyers, Antoinette Besier and Kate Mitchell, are committed to providing quality advice and compelling advocacy.



What We Do

What We Do


Tasman Law specialises in providing legal advice and representation. Key areas of law include:

Resource management

Tasman Law has the expertise to assist you or your business in the following areas:

  • resource consent applications for all types of activities
  • plan changes to district or regional plans
  • representation in appeals to the Environment Court including attendance at mediation
  • district court representation for prosecutions under the Resource Management Act
  • enforcement related matters such as abatement notices and enforcement orders.

Local Government

  • compliance and regulatory prosecutions
  • general dispute resolution for a wide range of matters
  • governance and decision making matters
  • public works
  • bylaws and regulations
  • meetings and official information

Maori legal issues

  • Maori land law
  • Treaty of Waitangi law
  • Treaty of Waitangi claims

We can also assist you in the following areas:

  • health and safety
  • wills and estate disputes
  • representation at tribunal hearings
  • negligence, nuisance and other common law claims
  • environmental warranties and environmental contract provisions
  • public and administrative law
  • policy developments and law reform

We are able to assist in a broad range of dispute resolution matters. 

We will consider pro-bono work. Recently Antoinette was part of a legal team led by Professor Claudia Geiringer who assisted Nauruan (ex-) MP Roland Kun to obtain a New Zealand passport. Roland returned to his family in Wellington earlier this week after a year stranded on Nauru without a passport.

Antoinette, Roland Kun, Professor Claudia Geiringer and Katy Le Roy (Roland's wife). Photo taken 6 August 2016

Antoinette, Roland Kun, Professor Claudia Geiringer and Katy Le Roy (Roland's wife). Photo taken 6 August 2016

Please feel free to call us to discuss further how we may assist you.


Who We Are

Who We Are


Tasman Law was established in 2015 and is based in the Tasman region but works for clients around New Zealand. Its two lawyers, Antoinette and Kate, work from home offices maximising the benefits of modern communication technology and visiting clients when required.


Antoinette Besier

Antoinette qualified as a Barrister and Solicitor of the High Court in New Zealand in 2005. She started her legal career in Wellington practising resource management law with a large national firm. In other positions in Wellington, Antoinette practised in civil litigation, family and criminal law, gaining well rounded experience as an advocate.

Antoinette grew up in the Tasman region (the Moutere area) leaving the area after finishing secondary school and returning with her family in 2010. Prior to establishing Tasman Law, Antoinette practised in the area of resource management and public law in a local law firm in Richmond. This position involved her providing advice and representation to the two local authorities in the Tasman Region.

Antoinette worked as a planner both in local government and in private practice in New Zealand and United Kingdom before qualifying as a lawyer.

For more details check out Antoinette’s profile on LinkedIn.



  • Bachelor of Laws (First Class Honours), Victoria University 2004  
  • Masters of Regional and Resource Management (awarded with Distinction), Otago University 1996
  • Bachelor of Arts (History and Political Science), Victoria University 1994


  • Resource Management Law Association, Regional Chairperson
  • New Zealand Law Society

Kate Mitchell

Kate qualified as a Barrister and Solicitor of the High Court in New Zealand in 1999. She began her legal career working for over two years in a large national firm in Wellington in the areas of Māori and Treaty of Waitangi law, and resource management. Her work required a variety of skills including litigation, commercial negotiations and advising on corporate structures. 

In 2001 Kate moved to England where she worked for two years, one year for a boutique planning and environmental firm in Bristol and the second year for a large multinational law firm in London in the area of environmental law. On returning to New Zealand in 2003, Kate spent a further year in Wellington for a large national law firm. In 2004 Kate and her husband Carl Devereux moved ‘home’ to Nelson where Kate worked for a local law firm in the areas of resource management and public law. She also took some time off to raise her family of three young daughters. Kate grew up in Mapua in the Tasman region and still has family there.

Following the Christchurch earthquakes, Kate and Carl moved in 2015 to Christchurch where Carl’s work is with the Christchurch rebuild. Kate commutes regularly to Nelson and has recently joined Tasman Law as a Senior Associate, with a focus on the areas of resource management, public law, and Māori and Treaty law.

For more details check out Kate’s profile on LinkedIn.


  • Bachelor of Arts (History and Maori), Canterbury University 1998
  • Bachelor of Laws, Victoria University 1999


  • New Zealand Law Society
  • Resource Management Law Association
  • Board of Trustees, Ilam School, Christchurch