Do you need a licensed concreter in New Zealand?

The short answer: usually no, but the job still has rules

In New Zealand, there is no separate government licence that every concreter must hold just to place, finish, or repair concrete. Unlike electrical work (regulated by the EWRB) or plumbing, gasfitting and drainlaying (restricted work under the PGDB), concreting is generally an unlicensed trade.

That does not mean anyone should do any concrete job with no checks at all. Depending on what you are building, you may still need:

• a building consent from your local council,
• specific engineering or design for load-bearing work,
• a concrete contractor who can demonstrate the right experience and insurance,
• compliance with the Building Code, site safety rules, and council requirements.

If you are hiring a concreter for a driveway, patio, path, slab, or retaining-related concrete work, the important question is usually not “Do they hold a licence?” but “Can they do the work legally, safely, and to the required standard?”

What a concreter usually does in New Zealand

A concreter may be asked to do any of the following:

• site preparation and boxing/formwork
• reinforcing placement
• pouring and finishing slabs, paths, driveways, and house foundations
• exposed aggregate, coloured concrete, broom finishes, and decorative work
• concrete repairs, resurfacing, and crack patching
• kerbing, edging, and small retaining or landscaping elements

Some of these jobs are straightforward hardscaping. Others can become building work if they form part of a structure, support a load, or affect drainage, falls, or ground stability.

When concreting can trigger consent or compliance requirements

Even though the concreter themselves usually does not need a specific trade licence, the project may still need council approval or must meet the Building Code.

Common examples include:

• House slabs and foundations: These are typically part of building work and may require a building consent unless an exemption applies.
• Structural concrete: Any concrete element carrying building loads, supporting decks, walls, or additions may need engineering input and consent.
• Retaining walls: If concrete work forms or supports a retaining wall above certain heights or conditions, it can require consent.
• Driveways and vehicle crossings: A driveway on private property may be straightforward, but a new or altered vehicle crossing to the road often needs approval from the council or transport authority.
• Drainage and falls: Concrete paving must not create runoff problems for neighbours or send water towards buildings where it can cause dampness.
• Work near boundaries: Height, setback, and drainage rules can matter, especially in tighter urban sections.

The safest approach is to check with your local council before the job starts if the work is anything more than a simple path or patio.

What is generally DIY-legal?

For many homeowners, DIY concreting is allowed on small, low-risk projects provided it does not cross into consented building work or restricted trade work done by others.

Common DIY-friendly jobs include:

• small garden paths
• simple patios
• non-structural pads for sheds or bins, where no consent is required
• minor repairs to existing concrete surfaces
• edging or stepping stones

DIY concreting is most suitable when:

• the area is small and level,
• there is no structural role,
• it does not change stormwater flow in a problematic way,
• it does not involve a road crossing or council asset,
• you are confident about site prep, reinforcement, levels, and curing.

Be careful: a job can look simple and still cause expensive problems later if the base is poorly compacted, the fall is wrong, or the concrete is placed in unsuitable weather.

When you should hire a professional concreter

You should strongly consider a professional for any job where failure would be costly, dangerous, or hard to fix.

Hire a professional if the project involves:

• a driveway that will carry vehicles regularly
• a house slab, garage slab, or slab-on-ground for a sleepout
• steps, ramps, or accessibility needs
• exposed aggregate or decorative finishing where appearance matters
• poor access, sloping ground, or difficult site conditions
• retaining walls or structural elements
• a project needing a tight timeframe, such as before a house sale or landscaping programme

A good concreter will also understand practical NZ conditions such as:

• wet winter ground and delayed curing,
• summer heat causing rapid set and shrinkage risk,
• clay soils and drainage issues,
• coastal exposure and corrosion considerations,
• the need to schedule around rain, wind, and temperature.

The real risks of unlicensed or poor-quality concreting

Because concreting is not a universally licensed trade, the main risks are less about whether someone is “allowed” to pour concrete and more about whether they are competent and properly set up.

1) Insurance problems

If concrete work causes damage — for example, a slab cracks and damages a garage, or poor falls lead to water entering a dwelling — your insurer may ask who did the work and whether it was done properly.

Possible issues include:

• a DIY job that was not built to code or manufacturer requirements,
• a contractor without public liability insurance,
• no written contract, so it is harder to prove what was agreed,
• disputes over workmanship, materials, or timing.

Always ask a contractor if they hold public liability insurance and, where relevant, contract works cover. Get this in writing if possible.

2) Resale and due diligence problems

When selling, buyers and lawyers may ask about recent building work. If the concrete work was part of a consented structure and there is no paperwork, it can slow the sale or reduce buyer confidence.

You may be asked for:

• building consent documents,
• code compliance certificate or other completion records,
• engineer’s details where applicable,
• invoices and warranties,
• evidence that any council-required approvals were obtained.

A neat-looking concrete job can still become a problem at sale time if it was part of unconsented building work.

3) Safety hazards

Bad concrete work can create trip hazards, slip risks, or structural failure.

Examples include:

• uneven slabs and lips at thresholds,
• insufficient reinforcement in load-bearing areas,
• wrong falls causing ponding,
• slippery finishes in the wrong location,
• cracking from poor sub-base preparation or curing.

For households with children, older people, or mobility challenges, these issues matter as much as appearance.

4) Compliance and council enforcement

If the concrete work is tied to building work, drainage, a retaining wall, or a vehicle crossing, non-compliance can mean council involvement later.

That could lead to:

• requests for more information,
• remediation work,
• delays to completion or sign-off,
• extra cost to obtain engineering or retrospective approval.

Retroactive fixes are usually more expensive than doing it properly from the start.

How to check a concreter before you hire them

Because there is no single “concreter licence” to verify, your checks should focus on competence, reputation, insurance, and paperwork.

Use this checklist:

It is sensible to get at least three written quotes for anything beyond a small repair. Price alone should not decide it; concrete is one of those jobs where the cheapest quote can become the most expensive mistake.

Questions to ask before work starts

Ask direct questions, such as:

• Have you done this type of concrete job before in New Zealand conditions?
• Do I need building consent, council approval, or an engineer’s input?
• What base preparation and reinforcement will you use?
• What finish will I get, and how will you control cracking?
• What happens if the weather changes on pour day?
• How long before I can drive or walk on it?
• What warranty do you offer on workmanship?
• Are you insured?

Good contractors will answer clearly and won’t be offended by the questions.

DIY versus hiring: what is actually worth doing yourself?

DIY can save money on small, simple projects, especially if you are handy and the site is easy.

DIY may be reasonable when:

• the area is small,
• the concrete is non-structural,
• appearance is not critical,
• you can manage the timing and labour,
• you understand the base prep and curing process.

Hiring a professional is usually better when:

• the slab must be level and durable,
• the concrete is visible and finish matters,
• access is tight and the pour is time-sensitive,
• the work involves vehicles, buildings, or drainage,
• the cost of failure is high.

Remember that concrete is unforgiving. You often get one shot at the pour, and mistakes are hard to hide later.

The bottom line for New Zealand homeowners

You usually do not need a special trade licence to hire a concreter in New Zealand, but that does not make the job licence-free in every sense. The project may still need consent, council approval, engineering, or compliance with the Building Code.

For small non-structural jobs, DIY may be fine if you understand the risks. For slabs, driveways, retaining work, or anything connected to a dwelling or vehicle access, it is usually worth using an experienced concreter with insurance and a written quote.

The safest rule is simple: check whether the work needs consent, confirm the contractor’s experience and insurance, and compare multiple written quotes before you commit.