Concrete vs wood decking in Tauranga: which is right for you?
Choosing between concrete and wood for your deck is one of the first decisions you'll make, and it shapes everything that follows: the cost, the build timeline, the compliance requirements, and how much maintenance you'll be doing in five years' time.
As deck builders based in Tauranga, we've built timber decks on steep Papamoa sections, low-level pine decks in Bethlehem backyards, and everything in between. We've also watched clients choose concrete for the wrong reasons and end up with a surface that gets too hot to stand on in January.
This guide gives you the honest comparison, including the parts most people don't mention.
The short answer
For most Tauranga sections, particularly those with any slope, wood is the better choice. It's more comfortable, more versatile, and more practical to build. Concrete makes sense on flat ground where you want a permanent, virtually zero-maintenance surface and you're not planning to walk on it barefoot in summer.
Cost comparison: what does each actually cost in Tauranga?
Cost is usually the first question, and it's where the comparison gets more nuanced than most people expect.
Timber decking
Treated pine decking is the most affordable timber option, typically coming in at around $600 to $900 per square metre installed, including the substructure of piles, bearers, and joists. Hardwood options like Kwila and Garapa sit higher, generally $1,000 to $1,800 per square metre installed, depending on section complexity and access. Composite decking falls in a similar range to hardwood at around $900 to $1,400 per square metre installed, but with significantly lower maintenance costs over time.
Concrete
On flat ground, a basic concrete slab runs around $150 to $300 per square metre. Stamped or coloured finishes add cost, typically pushing the price to $300 to $500 per square metre. On a sloped section, where you need a suspended concrete slab or significant fill to achieve a level surface, costs can rise sharply to $500 to $900 per square metre or more, depending on the engineering required.
The slope factor
This is where the comparison shifts decisively for most Tauranga properties. If your section slopes, timber wins on cost. A timber deck is built on piles that follow the ground, so the structure adapts to the terrain without expensive groundworks. A concrete deck on a sloped section requires either substantial fill (which needs its own retaining and compaction) or an engineered suspended slab, both of which push the price well above what a timber deck would cost for the same area.
On flat ground, concrete can be competitive on upfront cost, though it typically loses that advantage once you factor in a quality finish.
Note: all figures above are indicative for the Tauranga region and will vary based on site conditions, access, and design complexity. Request a quote for an accurate assessment of your specific project.
Consent and compliance: are the rules different?
Yes, in some important ways.
Timber decks
As we cover in detail in our guide to NZ decking rules, a timber deck under 1.5 metres high at every point is generally exempt from building consent under the Building Act. It still has to comply with the Building Code, including balustrade requirements if any part of the deck is over 1 metre above the ground, but you can get on with the build without a formal consent application in most cases.
Concrete slabs
A ground-level concrete slab is also generally consent-exempt, provided it sits at or near ground level. However, a suspended concrete slab, a concrete deck over a slope, or any concrete structure that acts as a platform people walk on at height follows the same rules as a timber deck: consent is required above 1.5 metres.
Concrete work may also trigger additional requirements around drainage and stormwater under Tauranga City Council's rules on impervious surfaces. A large concrete area can push your site over the permitted impervious surface coverage for your zone, which may require resource consent. Timber decking, particularly slatted designs with gaps between boards, allows water to pass through and is treated differently in some situations.
If your project is at all borderline, check with Tauranga City Council's duty planner before you start.
Durability and maintenance in Tauranga's climate
Tauranga's climate is excellent for outdoor living, but it tests building materials hard. High UV exposure, summer humidity, salt air in coastal areas, and regular rain all take their toll. Here's how each material performs over time.
Concrete
Properly installed concrete is extremely durable and will outlast any timber deck in terms of raw lifespan. A well-finished concrete slab can last 30 to 50 years with minimal intervention beyond periodic cleaning and resealing every few years. It won't rot, warp, or require oiling.
The trade-off is that concrete is difficult to repair invisibly if it cracks (and in Tauranga's seismically active region, minor cracking over time is not unusual), and it cannot be easily modified or extended once it's poured.
Timber
Treated pine has a functional life of around 15 to 25 years above ground with regular maintenance. Hardwoods like Kwila and Garapa, rated as Class 2 durable species, are expected to last 15 to 25 years above ground without chemical treatment and longer with it. Well-maintained hardwood decks in Tauranga regularly reach 25 to 30 years before replacement is needed.
The critical factor is maintenance. A pine deck that gets oiled or sealed every one to two years will outlast one that gets ignored for five. A neglected hardwood deck will fade and eventually crack at the surface, though the structural timber below typically stays sound for longer.
Coastal considerations
For properties within a kilometre of the coast, including large parts of Mount Maunganui, Papamoa, and the harbour-facing properties around Te Papa, salt air accelerates corrosion in metal fixings. For any timber deck in these areas, stainless steel fixings are strongly recommended over galvanised. For concrete, standard reinforcing steel should be adequately covered with concrete to prevent corrosion causing the slab to crack from the inside.
Comfort and liveability
This is where timber wins clearly and consistently.
Concrete absorbs heat and radiates it back. On a Tauranga summer afternoon, a dark or mid-toned concrete deck can become uncomfortably hot underfoot. Lighter colours help, but they also show dirt more readily. Shade structures help, but they add cost.
Timber, particularly hardwood, stays significantly cooler underfoot in direct sun. The natural thermal properties of wood mean it doesn't hold heat the way concrete does. For families with children who use the deck barefoot in summer, this is a meaningful practical difference.
Timber is also more forgiving underfoot in a general sense: softer, quieter, and more comfortable for outdoor furniture.
Aesthetics: the honest comparison
Both materials can look excellent. But they suit different things.
Timber, particularly Kwila and Garapa, suits Tauranga's outdoor aesthetic well. Kwila's rich reddish-brown warmth complements both traditional and contemporary homes, while Garapa's paler golden tone suits modern builds and coastal properties where a lighter, more understated look is preferred. Both timbers develop a natural patina over time, either holding their colour with regular oiling or silvering gracefully to a driftwood grey if left untreated, giving each deck a living character that is uniquely its own.
Concrete offers more design flexibility in some respects: it can be stamped to mimic stone or pavers, stained in a wide range of colours, and finished with exposed aggregate for texture. For a contemporary architectural home where the deck is an extension of interior concrete or polished floors, a concrete outdoor surface can look genuinely exceptional.
For most residential properties in Tauranga, timber reads as warmer, more inviting, and more in keeping with the outdoor living culture of the region.
Which should you choose?
Here's a straightforward way to think about it.
Choose timber if your section has any slope. The cost and complexity advantage of timber on sloped ground is significant and hard to overcome. If your section drops away from the house, timber is almost certainly the right choice.
Choose timber if comfort and barefoot usability matter. Families with children, and anyone who wants to use the deck in summer without shoes, will find timber significantly more comfortable.
Choose timber if aesthetics are a priority and you want a warm, natural look. Kwila, Garapa, and even well-finished pine deliver a quality that's hard to replicate in concrete at a similar price point.
Choose concrete if your site is flat and you want a permanent, near zero-maintenance surface. For a ground-level entertaining area on a flat section where you'll be using outdoor furniture rather than walking barefoot, concrete is a legitimate option, particularly if the house has a contemporary architectural style.
Choose concrete if you want a surface that will genuinely outlast you. For long-term durability with minimal intervention, a properly finished concrete slab is hard to beat.
If you're still not sure, composite decking is worth considering as a third option: it combines the warmth and appearance of timber with maintenance requirements closer to concrete.
Common questions
Can I build a concrete deck myself?
A basic ground-level concrete slab is within the reach of an experienced DIYer, though the work is physically demanding and the results depend heavily on technique and timing. Anything elevated, suspended, or requiring reinforcing design should be built by a professional. Poor concrete work is difficult and expensive to remedy.
Can I add a timber deck to an existing concrete slab?
Yes. It's a popular option, particularly for properties with an existing concrete patio that gets too hot in summer. Timber decking can be laid over a concrete slab on a frame, giving you the comfort and aesthetics of timber without replacing the slab underneath.
Does one hold up better in Tauranga's earthquakes?
Timber is generally more flexible and performs well in seismic events. Concrete can crack under ground movement, and repairs to cracked concrete are rarely invisible. This is a minor factor in most residential decisions but worth knowing.
Which adds more value to my property?
Both a good concrete area and a quality timber deck add value, but in Tauranga's market, a well-built hardwood deck typically performs well at appraisal. Buyers in this region respond to quality outdoor living spaces, and a Kwila or Garapa deck in good condition is a tangible selling point.
Talk to Klinks
We build timber decks across Tauranga, Mount Maunganui, Papamoa, Bethlehem, Omokoroa, Te Puke, and the wider Bay of Plenty. If you're trying to work out which option suits your section, your home, and your budget, we're happy to talk it through before you commit to anything.
Call Craig: 027 630 2735 Or request a free quote at klinks.co.nz/contact
Klinks Fences & Decks, 10/45 Kaweroa Drive, Omanawa, Tauranga.
Cost figures in this article are indicative only and based on typical Tauranga market conditions. Always obtain specific quotes for your project. Compliance requirements should be confirmed with Tauranga City Council before starting any build.