Can I Frame Up a New Internal Wall Without a Consent?

In many cases, you can frame up a new internal wall without a building consent in New Zealand — but only if the work meets specific conditions under Schedule 1 of the Building Act 2004. Get it wrong and you could face costly remediation, problems selling your home, or issues with your insurance. Here's what you need to know before you pick up a nail gun.

What Does the Law Actually Say?

Building consents are required for most building work in New Zealand, but Schedule 1 of the Building Act 2004 lists exemptions for lower-risk work. One of the most relevant exemptions for homeowners is Schedule 1, clause 1 — which covers general repair, maintenance, and certain alterations that don't affect the structure or weathertightness of a building.

Adding a non-structural internal wall in a house typically falls under this exemption, provided:

• The wall does not remove or alter any existing structural element (e.g. load-bearing walls, bracing panels, or lintels)
• The work does not affect the building's weathertightness
• The wall does not create a new habitable room that requires compliance with specific Building Code clauses (such as natural light and ventilation under Clause G7)
• No restricted building work is involved (more on this below)
• The work complies with the NZ Building Code even though consent isn't required

Important: Exemption from consent does not mean exemption from the Building Code. Your wall still needs to be built to code.

Always confirm with your local council before starting — they have the final say on whether your specific project qualifies as exempt. You can also check the guidance on the MBIE Building Performance website for detailed information on Schedule 1 exemptions.

What Makes a Wall 'Non-Structural'?

A non-structural (or partition) wall is one that carries no load from the roof, upper floors, or other structural elements — it simply divides space. A load-bearing wall, by contrast, supports weight from above and is part of the building's structural system under NZS 3604:2011 (Timber-framed buildings).

If you're not sure whether an existing wall is load-bearing, or whether your new wall will interact with the structure, consult a Licensed Building Practitioner (LBP) or a structural engineer before proceeding. Removing or altering a load-bearing wall is restricted building work and requires consent.

When Does Adding an Internal Wall Require Consent?

You will likely need a building consent if your new wall:

• Is load-bearing or forms part of the bracing system
• Creates a new bedroom, bathroom, or habitable room with specific code requirements
• Involves relocating plumbing (e.g. moving a bathroom wall)
• Involves electrical work beyond what a homeowner can legally do themselves
• Is part of a larger project that, taken as a whole, requires consent
• Is in a multi-unit dwelling or commercial building (different rules apply)

Restricted Work — Electrical and Plumbing

Even if the wall framing itself is exempt, be careful about what goes inside it.

Electrical work is tightly regulated in New Zealand. Only registered electricians can carry out prescribed electrical work — this includes installing new power points, light switches, or running new circuits inside a wall. Homeowners can do very minor work (like replacing a like-for-like fitting), but anything involving wiring inside a wall must be done by a registered electrician. Check the Electrical Workers Registration Board (EWRB) for details on what's restricted.

Plumbing and drainlaying work inside walls — such as moving or adding water supply pipes or drainage — must be carried out by a licensed plumber or drainlayer registered with the Plumbers, Gasfitters and Drainlayers Board (PGDB).

Safety Note

Never attempt restricted electrical or plumbing work yourself. Doing so is illegal, dangerous, and can void your home insurance.

How to Frame a Basic Internal Wall

If your project is genuinely exempt, here's the general process for framing a timber-framed partition wall:

1. Plan your layout — mark the wall position on the floor and ceiling, checking for existing wiring, pipes, and joists above
2. Cut your bottom plate and top plate to length from 90 × 45 mm (or 70 × 45 mm) H1.2 treated timber
3. Fix the bottom plate to the floor (concrete anchors or nails into timber subfloor)
4. Fix the top plate to ceiling joists or blocking — do not just fix to plasterboard
5. Install studs at 600 mm or 400 mm centres, depending on your lining choice
6. Add noggings at mid-height for rigidity and to support lining fixings
7. Line with plasterboard — GIB is the most common brand in NZ; follow their fixing and stopping specifications
8. Stop, sand, and paint to finish

Always use the correct fixings for your floor type, and check that your stud spacing suits the plasterboard thickness you're using.

Choosing Your Materials

When to Call a Professional

Hire a qualified builder or Licensed Building Practitioner (LBP) if:

• You're unsure whether the wall is structural
• The project involves consent-required work
• You want the work documented for future sale or insurance purposes
• You're not confident with the framing, fixing, or lining process

You can find experienced local builders and LBPs on tradedirectory.co.nz. Always ask to see their LBP licence — you can verify it at the Licensed Building Practitioners register.

Sources & Further Reading

• MBIE Building Performance — Schedule 1 exemptions
• GIB — plasterboard systems and specifications
• EWRB — electrical restricted work
• PGDB — plumbing and drainlaying licensing
• Licensed Building Practitioners register
• BRANZ — building research and guidance