If you’re planning work on your property in New Zealand, one of the most common questions is:
“Do I need building consent or resource consent — or both?”

What is the difference between resource consent and building consent?

• A building consent is about how something is built
• A resource consent is about whether your idea is allowed on your property

Both building consent and resource consent approvals are issued by your local council in New Zealand. Many projects require one or both approvals.

Understanding the difference early can help you avoid delays, redesign costs, or unexpected consent issues. Here’s a breakdown of what each consent covers and when you might need them.

What is a Building Consent?

A building consent is required for most construction work in New Zealand. It ensures thatbuilding work is safe, durable, fit for purpose and complies with to the NZ Building Code.

A building consent checks requirements like:

• Structural stability
• Weatherproofing
• Fire safety
• Plumbing and drainage
• Foundation
• Whether licensed builders are needed

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If your project involves construction work, such as adding a sleepout, altering internal walls, installing a bathroom, or building a deck, a building consent is often required. Council building officers review your plans to ensure the work will be safe and suitable for use.

In some cases, building consent exemptions may apply, but these still need to be carefully assessed.

A building consent (or a building consent exemption) is also often required for connections to existing council civil infrastructure, such as stormwater,wastewater, or vehicle crossings.

Think of a building consent as the construction safety approval for your project. 

What is Resource Consent?

A resource consent is about planning rules and environmental effects. It answers the question: “Does what I want to do fit within the district plan rules for my property?”

A resource consent looks at:

• Boundary setbacks
• Building height
• Site coverage
• Shading effects on neighbours
• Noise
• Natural hazards (like flooding)
• Parking and vehicle access

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You only need a resource consent if your proposal does not comply with one or more rules in the District Plan that apply to your site.

For example, you may need a resource consent if you want to:

• Build closer to a boundary than permitted
• Exceed maximum building height
• Add more dwellings than allowed
• Increase traffic or noise effects
• Build on a flood‑prone or hazard‑affected site

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Think of a resource consent as the planning approval. It checks whether your proposal fits within the rules for your zone and manages any environmental effects on neighbours and the wider area. 

Does a Subdivision need a Resource Consent?

A subdivision is also a type of resource consent. If you want to:

• Move a boundary between properties
• Subdivide land into multiple lots
• Amalgamate titles

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you will need a subdivision resource consent. Subdivision projects often also involve surveying, engineering design, and coordination with council infrastructure requirements. 

Do You Need Resource Consent or Building Consent? Or Both?

It’s common for projects to need:

• Only building consent (for example, internal renovations)
• Only resource consent (for example, creating a new vehicle access)
• Both resource consent and building consent (for example, building a minordwelling that meets the Building Code but breaches planning rules)

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One consent does not replace the other; they serve different purposes

The Key Takeaway

• Building consent = how it’s built (safety + Building Code)
• Resource consent = whether it’s allowed (planning rules + environmental effects)

Need Help with Your Consent?

If you’re unsure whether your project requires resource consent, building consent, or both, getting early advice can save time and cost.

Our team has extensive experience navigating New Zealand’s planning and building consent processes. Inovo’s resource management planning team assists with all types of resource consent applications, including land use consents, subdivision consents, and plan changes. We provide clear planning advice, prepare consent applications, and manage the process through council to minimise delays and risk.

Our Inovo team also includes surveyors and civil engineers. We can support subdivision projects from start to finish. This includes feasibility assessments, subdivision design, surveying, servicing layouts, and coordination of approvals — all under one roof.

Our civil engineers can design and obtain building consent exemption (BCE) approvals for civil works, including roads,vehicle crossings, and three‑waters infrastructure, and provide construction‑phase support where required.

By working together as an integrated team, we help ensure your project is coordinated, efficient, and compliant from early planning through to final approvals.

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Get in touch to discuss your project.

rmplanning@inovo.nz

020 4000 0294  

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Was this article helpful?  Here’s some other topics that might be interesting to you:

‍How does Plan Change 120 affect your development options?

Minor Dwellings in NZ - when do you need a consent?

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Disclaimer

This article contains general information and opinion based on our expertise. It is provided free of charge and does not constitute legal or other professional advice. The information within it was up to date at the time of publishing.

Have you got further questions about this topic or our other services?

We are always happy to help – drop us an email rmplanning@inovo.nz, or phone us on 020 4000 0294.

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Together with Architectus, we are excited to be named a finalist in the 2026 Property Industry Awards for Community Lane — a large-scale Auckland development for Kāinga Ora – Homes and Communities.

Following site visits, the judges have confirmed that Community Lane has been selected alongside other prestigious developments as a finalist in the Affordable Housing Property Award category. Community Lane is Aotearoa’s largest social housing development. Located in Avondale, Auckland, it delivers 236 apartments across five mid-rise (5–7 storey) buildings, primarily supporting senior residents. A central east–west laneway connects the buildings and links residents to the surrounding neighbourhood, including nearby shops and public transport. With north-facing courtyards, retained pōhutukawa, shared gardens, and communal spaces, the development has been carefully designed to support accessibility, dignity, and connection. Community Lane reflects Kāinga Ora’s vision for high-density housing that fosters strong, integrated communities.

With Inovo as project managers and Architectus leading the design, a joint nomination for the Property Council New Zealand Property Industry Awards 2026 was a natural fit. We’re looking forward to the Awards Night in June and will keep you updated on the outcome.

Read more about this innovative project

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Minor dwellings — often called granny flats, sleepouts, or secondary dwellings — are becoming increasingly popular across New Zealand. In many cases, you can now build a minor dwelling without a building  or resource consent, provided your design meets key district plan rules around size, height, setbacks, and servicing. However, resource consent is still required if your proposal breaches these standards or your site has infrastructure or planning constraints.

This guide explains what you can build, when you need consent, and what to check before getting started.

What is a minor dwelling?

A minor dwelling is typically a self-contained residential unit located on the same site as a primary home. In New Zealand, minor dwellings are typically limited in size and must meet specific district plan rules relating to floor area, servicing, access, and outdoor space. These rules are designed to enable small-scale additional housing without the complexity of full multi-unit developments.

What’s changed in 2026?

In 2026, Central government streamlined consent pathways for granny flats (minor dwellings) as a permitted activity and without requiring a building consent. This generally means a minor dwelling can be built without resource consent if it meets key performance standards, such as site coverage, height limits, setbacks, and outdoor living space requirements. Building consent may still be needed for some structures, but the approval pathway has become simpler. For homeowners, this reduces uncertainty and speeds up project timelines.  

When Do You Need Resource Consent for a Minor Dwelling?

You will typically need resource consent for a minor dwelling if your proposal does not meet district plan rules.

Common triggers include:

• exceeding the 70m² size limit

• building too close to boundaries (setback infringement)

• breaching height in relation to boundary controls

• insufficient outdoor living space

• limited capacity for wastewater, stormwater, or water supply

• additional access or parking requirements

If your site has constraints — such as flooding, access limitations, or infrastructure capacity — additional approvals may also be required.

These service based constraints remain one of the most common reasons minor dwellings require additional approval.   If you hit one of these triggers, you may still be able to build, but with a consent. We are happy to help guide you through that process.

What Can You Build Without Consent?

For many households, a compliant minor dwelling might look like a 60-70m² standalone unit with one or two bedrooms, positioned behind or beside the main home. Simple design choices, like maintaining adequate outdoor space and avoiding boundary encroachments, can keep the project within permitted standards.

A compliant minor dwelling in New Zealand will typically include:

• Up to 70m² floor area

• One or two bedrooms

• A self-contained kitchen and bathroom

• Located behind or beside the main dwelling

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To be permitted, itmust also meet the following standards:

• Size - Minor dwellings must be 70m² or less in floor area.

• Height and setbacks - Buildings are generally permitted up to 11m high (or 12m with a pitched roof), with minimum setbacks of

...................1.5m from front boundary

...................1m from side and rear boundaries

...................plus a 4 metre + 60° recession plane to manage shading

• Outdoor living space – Each dwelling must have at least 20m² of ground level outdoor living space (minimum 3m dimension), or 8m² if provided as a balcony.

• Servicing and access – The site must be able to accommodate additional wastewater, stormwater, and water demand, and in some cases an extra onsite parking space.

While national standards now set consistent rules for building height, setbacks, and outdoor living space in many urban areas, minor dwelling size and eligibility remain controlled by individual district plans.

Common Minor Dwelling Projects

We regularly see clients looking to build minor dwellings for:

• granny flats for extended family or ageing parents

• minor dwellings for rental income

• sleepouts or small standalone units

• second dwellings on existing residential sites

Each of these can have different planning implications, so early advice can help avoid delays.

What to Check Before You Build

While the rules are simpler in 2026, every site still has its own planning context. Before starting, it’s important to check:

• your district plan zoning and rules

• infrastructure capacity (water, wastewater, stormwater)

• site constraints such as flooding or natural hazards

• access and parking requirements

If your project sits close to the limits, getting early advice from a planning consultant or resource consent specialist can help confirm whether consent is required and avoid costly redesigns later.

Not Sure If You Need Resource Consent?

If you're planning a minor dwelling and want clarity on whether you need resource consent, what it will cost, or how long it might take, our team can help.

Inovo’s resource consent planners and planning consultants can quickly review your site and provide clear, practical advice on the best path forward.

Get in touch to discuss your project.

rmplanning@inovo.nz

020 4000 0294  

‍

Was this article helpful?  Here’s some other topics that might be interesting to you:

‍How does Plan Change 120 affect your development options?

Key Zoning Decisions for Christchurch

‍

Disclaimer

This article contains general information and opinion based on our expertise. It is provided free of charge and does not constitute legal or other professional advice. The information within it was up to date at the time of publishing.

Have you got further questions about this topic or our other services?

We are always happy to help – drop us an email rmplanning@inovo.nz, or phone us on 020 4000 0294.‍