Simpson Grierson

Construction

Special Counsel

Sonia is one of New Zealand’s leading construction and infrastructure lawyers.

She has prepared, negotiated and advised on construction and infrastructure projects and disputes across a wide range of industry sectors including energy, building, roading, water and waste water, refuse collection and disposal, telecommunications, electricity and mining.

She has particular and extensive expertise in project procurement and documentation. This experience extends from advising on some of the most significant and complex projects ever undertaken in New Zealand to the development of standard tender and contract documentation based on NZS3910 (and related standards NZS3916 and NZS3917) for numerous public and private sector clients used in “business as usual” projects of every value.

Her expertise also extends to advising on, funding, cost contribution and entrusted works agreements, Early Contractor Involvement (ECI) agreements, professional services contracts (including those based on CCCS), design build contracts, framework and panel agreements and contracts based on international standard forms such as FIDIC and NEC as well as more specialised and collaborative forms of contracts such as alliancing agreements.

Recognition

Asia Pacific Legal 500 2026 Real Estate & Construction – Leading Associate

English

The Society of Construction Law (New Zealand)

The Auckland Women Lawyers' Association

New Zealand Law Society - Property Law Section

BA LLB