Cost to Build a New Garage Cost Calculator NZ Superior Renovations ®
Quick answer: building a new garage in Auckland costs from around $1,800 per square metre for a basic build to about $2,300 per square metre for a high-end one. That puts a single garage from roughly $55,000 and a double from around $90,000, once you allow for the roof and cladding you choose. Size, build grade, roofing and cladding are the four things that move the number.
A garage is a proper consented build, not a kitset drop, so how much it costs to build a garage in New Zealand usually sits higher than people expect. Here’s the breakdown, and a quick way to price yours.
How much does it cost to build a garage in NZ?
We price a new garage on floor area multiplied by a build grade, then adjust for the roofing and cladding you choose. These are the indicative Auckland figures behind our calculator:
| Factor | Indicative rate |
|---|---|
| Single garage (approx 30m²) | base size |
| Double garage (approx 46m²) | base size |
| Basic build | from $1,800 per m² |
| Mid-range build | from $1,950 per m² |
| High-end build | from $2,300 per m² |
| Roofing & cladding choice | adjusts the total up |
These are indicative figures for planning, not a fixed quote. Your final cost depends on the size, the grade of finish, the roof and cladding materials, your site, and whether you need services like power or plumbing run to it.
Single vs double garage cost
Size is the first lever. A single garage of around 30 square metres at the basic grade works out near $55,000 to $65,000 once roofing and cladding are added. A double garage of around 46 square metres runs closer to $90,000 to $110,000 at a mid-range grade.
Step up to a high-end finish, add a mezzanine or a sleepout fit-out, and it climbs from there. Choose your size, grade, roof and cladding in the new garage cost calculator and it builds the estimate for you, rather than you guessing off a per-metre rate. Our new garage cost guide has more on the options.
What size is a single or double garage in NZ?
Size drives the cost, so it pays to know the numbers before you plan. A tight single garage is about 18m², but most people build closer to 20-30m² to fit storage, a workbench or a bit of room around the car. A double garage starts around 36m² and runs up to about 46m² once you allow space to open both doors and move.
- Single garage. Around 3.0-3.6m wide by 6m deep. Fits one car; go wider if you want storage down one side.
- Double garage. Around 5.4-6m wide by 6m deep. Fits two cars, or one car plus a workshop or gym zone.
- Oversized or high-stud. Extra width, depth or height for a boat, a trailer or a mezzanine adds floor area, and cost.
Our calculator uses generous footprints – a 30m² single and a 46m² double – so the estimate reflects a garage you can actually use, not just park in. Set your own dimensions in the new garage cost calculator to see how size moves the number.
How build grade, roof and cladding change the price
Two same-sized garages can differ by tens of thousands depending on the specification.
- Build grade – basic, mid-range or high-end sets the base rate, covering the quality of the structure, doors, and finishing.
- Roofing – a standard metal roof is the baseline; membrane, concrete tile, slate or copper each add to the total, with slate and copper the priciest.
- Cladding – the exterior finish, from vinyl and steel through to timber, shifts the cost to match or complement your house.
Matching the garage to your existing home is worth doing, both for looks and for resale. The calculator lets you test each combination on the price before you commit.
Kitset vs a built-on-site garage
This is where a lot of the price confusion comes from. A kitset garage has a lower sticker price, but the sticker is not the finished cost. To make a kitset a permanent, compliant structure you still add a consented concrete foundation, drainage, a vehicle crossing where one is needed, and installation. Once those are in, the gap to a built-on-site garage narrows.
What the difference buys you:
- It matches the house. A built garage is designed around your home and site – roofline, cladding and finish – rather than sitting apart as a shed.
- Compliance is handled. Consent, foundation and sign-off are managed as one job, not bolted on afterwards.
- Resale. A garage that reads as part of the home usually adds more value than a standalone kit.
If budget is the priority a kitset can still make sense – just price it with the foundation, consent and install included, not the kit on its own.
Do you need consent to build a garage?
Almost always, yes. A new garage is a building over 10 square metres, so it needs an Auckland Council building consent, a compliant foundation, and sign-off. There are narrow exemptions for very small, single-storey detached buildings, but a standard single or double garage sits well over the threshold. Confirm your situation with Auckland Council, and the Building Performance (MBIE) guidance sets out what counts as building work needing consent – we manage the consent as part of the build.
Get your garage number, then get it confirmed
A well-built garage adds storage, security and value, and pairs well with wider outdoor work like driveways and landscaping. The smart first move is a realistic figure for the garage you actually want. Start with the new garage cost calculator, see how it fits a bigger project in our Auckland home renovation guide, then request a free feasibility report for a measured quote from the Superior Renovations team.
How much does it cost to build a garage in NZ?
In Auckland, a new garage costs from about $1,800 per square metre for a basic build, $1,950 for mid-range, and $2,300 for high-end. That puts a single garage (around 30m2) from roughly $55,000 to $65,000, and a double (around 46m2) around $90,000 to $110,000, once roofing and cladding are added.
How much does it cost to build a double garage in NZ?
A double garage of around 46 square metres usually runs between $90,000 and $110,000 at a mid-range grade in Auckland, before any high-end finishes. The exact figure depends on the build grade and your choice of roofing and cladding. Our calculator prices your specific combination.
Why does a garage cost so much to build?
A standalone garage is a full consented build. It needs a building consent, a compliant concrete foundation, drainage, a framed and clad structure, a roof, and a garage door, plus often a vehicle crossing. That is a very different job from dropping a kitset shed on the lawn, which is why the cost is higher.
Do I need building consent to build a garage?
In almost all cases yes. A new garage is over 10 square metres, so it needs an Auckland Council building consent and sign-off. Only very small detached buildings may be exempt, and a standard single or double garage is well over that threshold.
Is it cheaper to build a garage or buy a kitset?
A kitset shed has a lower sticker price, but once you add a consented foundation, drainage, and installation to make it a permanent, compliant structure, the gap narrows. A built-on-site garage also integrates properly with your home and site, which matters for durability and resale.
How does the roof and cladding choice affect the cost?
Roofing and cladding both scale the total. A standard metal roof is the baseline, while membrane, concrete tile, slate or copper add more, with slate and copper the most expensive. Cladding options from vinyl and steel through to timber also shift the price. The calculator lets you test each combination.
How long does it take to build a garage?
A straightforward single garage often takes a few weeks on site once consent is granted, with a double or high-end build taking longer. Consent processing time is separate and sits before the build. Your project manager gives you a full timeline up front.
What size is a single garage in NZ?
A single garage in New Zealand is typically about 3.0 to 3.6 metres wide by 6 metres deep, roughly 18 to 21 square metres. Many people build a little larger, 20 to 30 square metres, to fit storage or a workbench alongside the car. The wider you go, the more usable the space.
How big is a double garage in NZ?
A double garage is usually around 5.4 to 6 metres wide by 6 metres deep, about 32 to 36 square metres, and up to roughly 46 square metres with room to open both doors and move around. That extra space is what makes room for a workshop, gym or storage as well as two cars.
Can I build a garage on the side of my house?
Yes, an attached garage on the side of the house is common and can share a wall with the home, which affects the foundation and structural design. It still needs a building consent, and boundary setbacks under the Auckland Unitary Plan may apply. Confirm your site rules with Auckland Council or a Licensed Building Practitioner.
