• Helsby Construction Group

Decking Season Is Almost Upon Us!

The exterior of a home displays the unique taste of its owners and nowadays, instead of having a large backyard, people are preferring to create entertaining areas using decks and patios, which are less maintenance.

Are you planning on building a new deck? Are you searching for the price estimate to evaluate how much does it cost you to hire a deck builder that’s Auckland based?

Read on below for our tips on creating the perfect deck that meets your needs.

Rule & Regulations

If you are planning on having a balcony or deck around 1.5 meters above the ground, you will need Council permission. The rules and regulations around deck building are very strict, and it is important to consider them before taking on any deck building endeavor.

The main concern surrounding deck building is the timber decay. While building your new deck, you have to design and build it with great care to avoid water trapping and timber decaying. The most common cause of this is where water leaks through the cladding and causes the early corrosion or decay of timber. So proper maintenance is essential if you are thinking about having your deck above the ground.

Here are some of the guidelines

  • If your deck is up to 1.5 meters in height from the ground, you don’t need any kind of consent for its build-up process. However, if you are building a deck more than 1.5 meters above, you require permission.

  • Any fence which is 1 meter above the ground and possesses the risk of falling requires a barrier, so you will require resource permission for that too.

  • If you are thinking about having attached decking, Auckland Building Department recommends a gap of 12mm behind the ribbon plate to avoid moisture retention and mildew development.

  • Along with the ones mentioned above, the deck construction is also required to meet other structural and building requirements.

What the law says

Subject to section 42A of the Building Act, Schedule 1 exempts the following from a building consent:

- Building work in connection with a deck, platform, bridge, boardwalk, or the like from which it is not possible to fall more than 1.5 metres even if it collapses. (, 2019)

- If you plan to build a deck that is up to 1.5m high, you don’t need a building consent but you may still need a resource consent, depending on the rules in the Proposed Auckland Unitary Plan.

- If your deck is more than 1m high, it must have a handrail. (, 2019)

For further details, visit

or Auckland Council website:

How much will my deck cost?

How much do I need to spend on building a deck?

Probably one of the most common questions when it comes to deck building. However, the cost of any deck project will depend on a few fundamental choices that you make, and there are standard costs you can work out from there.

Although prices from deck builders vary, particularly in Auckland, the standard cost estimate for a 1-meter high deck is as follows:

For a 90 mm wide pine decking, you might get charged up to $450+ per square metre. However, the other factors that affect the cost of deck building include:

  • Site condition

  • Soil type

  • Deck’s height

  • Accessories required

  • Other costs including permits, demolition, seating, cladding, and what type of stairs/ramps are required.

What do I need to know before beginning construction of my deck?

Before moving ahead with construction, you need to consider some of the following to get a better idea about the type of deck you need.


The most common question while building a new deck is how you are going to use it? Whether you need a deck for private sitting or requires for a large space for dinners and parties? Do you have children, or do you want extra protection on your deck?

Answering these questions will help you gauge whether adding a pergola would be worthwhile, or a higher balustrade is necessary.

Area assessment:

Next comes the area assessment or more specifically, which part of your house you want your deck to be. The area selection is crucial as it involves the consideration regarding your underground structures, location and (most importantly) what sort of weather your deck will be exposed to, for example whether your proposed deck location will get morning or afternoon sun or if it is a windy area of your property.

Checking this prior to starting construction can mean you eliminate the issue of hitting underground services while digging your post holes, or having your deck covering up access to important services

Size of the deck:

The size of the deck depends on various factors including your usage, amount of furniture required and type of activities you are planning on doing on your deck.

Once you have decided on a final size of your deck, then you will be able to easily obtains m2 rates and quotes for your deck from builders.

Decking timber cost comparisons

Timber Decks (includes only supply & install of timber decking):

  • Pine 140×32 – $50/m2 excl GST

  • Kwila 140×19 – $89/m2 excl GST

  • Vitex 140×19 – $105/m2 excl GST

  • Garapa 140×19 – $104/m2 excl GST

  • Iroko 140×19 – $112/m2 excl GST

Composite (includes only supply & install of decking):

  • Outdure 138×23 – $103/m2 excl GST

  • Millboard 176×32 – $210/m2 excl GST (and this was a good deal)

The cost-estimation mentioned above points out why the people opt for pinewood decks as compared to Kwila wood. The pinewood decks are affordable and easily available, making them budget friendly. However, recently we have seen a shift and people are more willing to spend for durability, style and look so Kwila has become incredibly popular.

Hardwood decking timbers such as Kwila, Vitex and Garapan, do not rot or allow water damage to the same extent as pine, and so you can rest assure that your new deck with not only look better than a traditional pine deck, but it will last a lot longer.

So, how much will I have to pay to build a deck at my house?

Well, if you are looking for a generic ballpark figure, then an uncovered deck will cost you about $350/m2. However, if you want to add some facilities including a gazebo, veranda, or pergola, then the cost estimate would be $600/m2 excl GST for deck covering.

To get a more accurate quote for a deck at your place, don’t hesitate to get in touch with us at, or 021-817-096.

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