Whangarei's subtropical climate and long outdoor season make decks excellent value — usable 10+ months of the year. Composite decking handles Northland's humidity and UV well with minimal maintenance. Here's what deck builders charge in Whangarei in 2026.
Whangarei Deck Costs 2026
| Service | Whangarei typical cost |
|---|---|
| Deck construction (per m²) | $1,650–$3,300/m² |
| Standard 20m² deck with balustrade | $16,500–$41,000 |
| Treated pine (entry-level) | $1,400–$2,400/m² |
| Hardwood (kwila, vitex) | $2,100–$3,800/m² |
| Composite (Trex, ModWood) | $2,400–$4,300/m² |
| Balustrade — glass (per m linear) | $580–$1,350/m |
| Deck stairs (per flight) | $1,700–$4,200 |
All prices GST inclusive. Broadly regional.
Whangarei Deck Market
Whangarei's subtropical climate and long outdoor season make decks excellent value — usable 10+ months of the year. Composite decking handles Northland's humidity and UV well with minimal maintenance.
Consent in Whangarei
Decks over 1m above ground, over 20m², or attached to the house require building consent from Northland Council. Ground-level decks under 20m² and under 1m are usually exempt — confirm with your deck builder before starting.
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Related: Deck Building Cost NZ | Pergola Builders Whangarei