The Public Works Act 1981 empowers the Crown and, in many cases, local authorities or authorised requiring-authorities,  to acquire land required for public works. “Public works” may include infrastructure such as roads, bridges, public transport corridors, water supply, community facilities, utilities, rail, schools, etc.

Acquisition can be by agreement (negotiated purchase) or, where necessary, compulsory acquisition under the PWA.

Where land is taken, the Act imposes obligations to properly compensate landowners,  including land value, disturbance, legal and valuation costs.

Recent reform efforts aim to streamline the PWA, notably for “critical-infrastructure” projects, to speed up delivery while maintaining owner protections.

Also, when land or interest is no longer required, there are provisions for disposal,  surplus land may be offered back to former owners or otherwise disposed of under statutory rules.

Where land is Māori-owned (freehold, customary or otherwise under Māori land classification), the process differs considerably. The Act recognises that land is a taonga tuku iho and gives special weight to retaining whenua in the hands of whānau, hapū and iwi.

Any “alienation” (sale, transfer, lease, granting of rights, or other interest) in Māori freehold land must comply strictly with the Act, including giving first right of refusal to preferred classes (iwi/hapū/whānau), requiring orders from the Māori Land Court, and honouring tikanga and communal ownership structures.

Practically this means: before acquiring land or granting rights over Māori land, careful due diligence is required to confirm status; you must engage with the relevant whānau/hapū/iwi; and proceedings must often be heard in the Māori Land Court (for vesting orders, status changes, easements, covenants, etc.).

This applies equally when the land is to be used for public works, utilities, infrastructure or disposal. The protections for Māori land remain, even when acquisition is via public-works legislation.

When a project involves land classified as public reserve, conservation reserve, open-space, heritage land or similar, additional statutory obligations apply. The Reserves Act 1977 governs acquisition, control, management, maintenance, use, disposal and reclassification of reserves.

Projects impacting reserves or conservation land require compliance not only with acquisition law, but also with environmental, heritage, public-access and long-term stewardship obligations.

Land acquisition under PWA (or other legislation) does not remove the need to consider other regulatory regimes. Depending on the project, you may need: resource-planning consents or designations; environmental impact assessments; iwi / cultural / heritage consultation; reserve or conservation law compliance; public-space and open-space planning; and coordination with other agencies (e.g. conservation, heritage, environment, local councils). We provide these services, too.