Height in relation to boundary (recession planes) explained for Auckland

Updated 10 November 2026 · Auckland Unitary Plan

Height in relation to boundary, often called a recession plane, stops buildings from looming over neighbours. Imagine a line that starts a set height up on your boundary and slopes inward: buildings must stay under it.

How it's measured

In the Single House and Mixed Housing Suburban zones, the plane starts 2.5m above ground at side and rear boundaries and rises at 45°. In Mixed Housing Urban it starts 3m up, and in Terrace Housing & Apartments 3m, both at 45°.

With a 45° plane, every metre you move away from the boundary lets the building be one metre taller, up to the zone's height limit.

Alternative rules near the street

The Mixed Housing zones have an alternative recession plane for the front part of a site (near the street), which can allow taller walls there. Terrace Housing & Apartments has its own alternative planes. Which one applies depends on the design.

Next to a lower-density zone

Where a Mixed Housing Urban or Terrace Housing site borders a Single House or Mixed Housing Suburban site, a stricter plane (starting 2.5m up at 45°) applies on that boundary.

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Common questions

Does height in relation to boundary apply at the front?+

The standard recession plane applies to side and rear boundaries. Front boundaries are mostly controlled by front yards and, in some zones, the alternative rules for the front of the site.

Can I see the recession planes for my site?+

Yes. Groundwork's Estimator draws the building envelope in 3D using the real boundary and the recession planes for your zone, including the stricter rules next to lower-density zones.

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General information only — not planning, legal or valuation advice. Rules change; check the Auckland Unitary Plan or ask a planner for your site.