Zoning, overlays and designations: can you actually use, or expand, the commercial building you are buying?
The zone shown on a council planning map is only the starting point. Before buying commercial property in New Zealand, also check the overlays, designations, precincts and any resource consent conditions on the site, because these can limit height, rooftop plant, activities and future expansion even where the base zone allows your use. If the current use relies on existing use rights, those can lapse if the use stops for more than 12 months.
How to find the zone
In Auckland, every piece of land has a zone under the Auckland Unitary Plan, and the zone sets what can be built, the height, the land use and the activity types. Look the property up in the council's Unitary Plan viewer or on GeoMaps, which carries zoning, overlays, aerials and services; the rules themselves sit in the plan text on the council's Unitary Plan site. Outside Auckland, the equivalent is the relevant district plan and that council's GIS.
The map is an index: it tells you which layers touch the site, not what they permit. Read the plan text for every layer, not just the zone.
Zone, overlay, designation and precinct
Zone. The base set of rules for the site: which activities are permitted or need a resource consent, and the built-form standards such as height and yards.
Overlay. An additional layer that applies extra controls, usually tighter ones, over the underlying zone. Auckland Council's own worked example is that demolition in the Single House zone is a permitted activity, but inside a special character overlay it becomes a restricted discretionary activity. The same logic applies on a commercial site.
Designation. In practice, a provision in the plan made by a requiring authority, such as a government department, a council or a network utility operator, for a public work on the land, commonly with its own conditions that apply regardless of the zone.
Precinct. In practice, an area-specific rule set in the Auckland plan that can modify how the zone applies in that area.
The LIM must also include the use the land may be put to and conditions on that use, a useful cross-check on the map.
An invented example, for illustration
Take a two-storey commercial building in a mixed-use business zone, marketed for a fitness studio downstairs and offices upstairs, where the previous occupier ran a vehicle workshop for 20 years (invented, for illustration).
The zone allows the fitness studio and the offices, so on the map the purchase looks straightforward.
A height-related overlay crosses the site. The buyer's plan for new air-conditioning plant on the roof would breach it, so a permitted addition becomes a resource consent application with an uncertain outcome.
A designation for future road widening runs along the frontage, with conditions limiting new structures near the boundary. That removes the frontage the buyer wanted for signage and a covered entrance.
The workshop was never permitted under the current zone; it continued under existing use rights. The building has been vacant for 14 months, so those rights have lapsed unless an extension is applied for within the window the Act allows, and a buyer hoping to relet the ground floor to a mechanic cannot simply assume them.
None of that is on the listing, and none of it is a defect in the building. It is a set of constraints on the use, and it changes what the property is worth to that buyer. Every item came from the plan text and the council records. Our post on what the information memorandum gets wrong covers the same pattern on floor area and car parks.
Existing use rights, and how they are lost
Section 10 of the Resource Management Act 1991 lets land be used in a way that contravenes a district plan rule if the use was lawfully established before the rule became operative or the proposed plan was notified, and the effects are the same or similar in character, intensity and scale as before. Two things trip buyers:
The rights lapse if the use is discontinued for a continuous period of more than 12 months. There is a two-year window to apply for an extension on stated grounds, but do not assume the rights on a vacant building survive.
Section 10 does not apply where reconstruction, alteration or extension increases the degree of non-compliance, so expanding a use that only exists under existing use rights is exactly what the section does not protect.
If the building's value to you depends on that activity, have your lawyer or a planner confirm in writing that the rights survive.
Resource consent conditions and the previous owner
In practice, conditions on a land use resource consent commonly attach to the land and continue to bind whoever owns it, so a condition granted to the previous occupier can limit hours, traffic, noise or storage on your site after settlement. Ask the vendor for every resource consent granted for the site and read the conditions; the documents sit in the council property file. The standard ADLS/REINZ agreement (now published with The Law Association of New Zealand, TLANZ) carries a vendor warranty at clause 7.1 that there are no undisclosed notices, demands or requisitions from any authority or under the RMA, your contractual backstop if something was withheld.
A resource consent application does not fit inside a normal due diligence period; our note on the due diligence period for commercial property sets out what does. If your use depends on a consent, that needs a condition in the agreement.
Change of use is a building question too
Even where the plan allows your activity, changing a building's use triggers the Building Act. Sections 114 to 116 require the owner to give the council written notice first, and the building must then comply with the Building Code as near as reasonably practicable for means of escape, fire rating, structure, sanitary facilities and protection of other property. A warehouse that becomes a gym faces a building test as well as a planning test, and the building test can be the more expensive one. Our hub on commercial property due diligence in NZ puts both tests in the wider checklist.
The rules are changing
The RMA is being replaced. At the time of writing, the Planning Bill and the Natural Environment Bill had completed the committee stage in Parliament and were awaiting a third reading; we have not confirmed their current status. The transition arrangements for existing plans, designations and consents will matter, so check the position on the day you sign.
What this doesn't tell you
This is a desk read of the plan and the council records, not planning advice, and it cannot tell you whether a consent application would succeed.
Whether existing use rights survive on a specific site turns on the facts and is for your lawyer or a planner to confirm.
The RMA and the Auckland Unitary Plan are described as at the time of writing; other councils' plans differ in detail.
The invented example above does not describe any real property.
FAQ
How do I find out what zone a commercial property is in?
In Auckland, look the address up in the Auckland Unitary Plan viewer or on Auckland Council GeoMaps, which show the zone, overlays and designations, then read the rules in the plan text. Outside Auckland, use the relevant district plan and that council's GIS.
What is the difference between a zone, an overlay and a designation?
The zone is the base set of rules for the site. An overlay adds extra controls, usually tighter, so a permitted activity can need a resource consent inside one. A designation is, in practice, a provision made by a requiring authority for a public work, with its own conditions that apply regardless of the zone.
What are existing use rights, and can they be lost after a sale?
Under section 10 of the RMA, a lawfully established use can continue even though it breaches a later plan rule, as long as its effects stay the same or similar in character, intensity and scale. The rights lapse if the use is discontinued for more than 12 months, so a vacant building may already have lost them.
Can a designation stop me extending or re-using a building?
It can restrict what you do on the part of the site it covers, because its conditions apply independently of the zone. Read the conditions in the plan and ask a planner what they mean for your proposal.
Do resource consent conditions transfer to a new owner?
In practice, conditions on a land use consent commonly attach to the land rather than the person, so they continue to apply after settlement. Ask the vendor for every resource consent granted for the site and read the conditions.
When do I need a planner rather than a desk check?
A desk check tells you which zone, overlays, designations and consent conditions touch the site and where they conflict with your intended use. Once your use needs a resource consent, or turns on whether existing use rights survived, you need a planner and usually your lawyer.
Send us the listing and the LIM
If you have a listing, a LIM or a property file and want to know what the plan and the council records say about the use you have in mind, send them through and we will tell you in writing what the records show and whether a planner needs to look. Independent analyst, not a valuer, engineer, surveyor, building inspector or lawyer.
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