Wind and slope decide this one before finish does.
Ask most Dunedin outdoor-living questions and the answer starts with which suburb, but decks and patios add a second variable: the site's relationship to the prevailing wind. A sheltered gully section can run a genuinely warm, still patio through most of the year; an exposed St Clair or Andersons Bay property facing the water needs the surface itself designed around shelter, not just level.
Underneath that sits the same slope question that shapes most Dunedin outdoor work — whether the level change from the house calls for a raised deck, a retained patio, or both working together across more than one terrace.
Four things beyond which material you'd prefer
What actually decides deck versus patio here.
How much level change you're resolving
A patio needs a flat area to sit on; a terraced Dunedin section usually only has that once retaining or significant fill has already happened, which a deck can sidestep entirely.
Whether the wind hits the site directly
Peninsula, hill and coastal exposure varies sharply — an unscreened deck open to the prevailing wind can sit unused for large parts of the year regardless of how well it's built.
Which part of the section actually gets sun
Aspect carries more weight here than in a warmer city; a smaller sheltered, sun-catching corner routinely outperforms a bigger surface that spends the day in shade.
What can physically get delivered
Stairs and narrow hill drives on sites like Roslyn or Mornington often mean decking and paving arrive by hand rather than by truck, and storage space on site is limited.
The three shapes this usually takes
Deck, patio-on-a-terrace, or a stepped hybrid.
Raised timber deck
FitsA meaningful level change straight off the house
Gives youAn elevated, ventilated surface suited to falling ground
Costs youSubstructure engineering and treatment for consistently wet conditions
Patio on an existing terrace
FitsSouth Dunedin sections or anywhere already retained flat
Gives youA durable, low-fuss surface once the level exists
Costs youNothing extra — but only works after the terrace is resolved
Stepped deck-and-terrace combination
FitsSteeper Roslyn or Mornington sections with more than one usable level
Gives youMultiple garden levels without one oversized retaining wall
Costs youMore setout coordination than a single flat surface
What the quote is really pricing
Substructure and access outweigh the visible surface.
What this looked like on one site
A wind-exposed rebuild in St Clair.
St Clair, facing straight into the prevailing wind
The section drops close to a metre and a half from the living area to the back lawn, and the wind comes straight off the water with nothing to break it. Instead of one large deck exposed the full width of the house, the fix keeps the main deck small and close to the building, using the house itself as a windbreak, then steps down to a lower gravel terrace for the calmer days. A screen on the exposed side means the upper deck actually gets used through more of the year than an unscreened version managed.
So quotes are actually comparable
Check these before you compare prices.
- Get the height above ground confirmed at its worst point, and whether that pulls in a balustrade requirement.
- Ask what footing depth the quote assumes for this specific slope, not a generic flat-site figure.
- Clarify how materials reach the build area given the property's actual access.
- Decide whether wind screening is part of this project or a later addition, and price accordingly.
Sources & methodology
Designed to show its working.
Deck height, balustrade and consent requirements vary by site and are set by Dunedin City Council. Confirm structural and consent requirements for the specific property with a licensed building practitioner.