Decks price by the metre squared. Fences price by the metre. Neighbours price by the conversation.
Outdoor work is the easiest building job to compare: a local specialist publishes deck pricing at $300–$600 per square metre with a 20m² deck at $8,000–$12,000, and fences quote per lineal metre against a written spec. The rules that catch people are the 1.5 metre consent line for decks and retaining, and the Fencing Act that makes the boundary fence half your neighbour's bill if you serve the notice.
Is this your stream?
A new deck, a deck rebuild, a boundary fence, gates, or a retaining wall. These price by the metre against a spec, which makes them the most genuinely comparable quotes in the building category.
A deck off a new extension or a fence package across a whole subdivision belongs inside the bigger contract, where Janssen or Pete's bundles it with the building work. Per-metre pricing only works when the outdoor job stands alone.
What it costs in Christchurch
The published deck guide
Deck Builders Christchurch publishes a local pricing guide: $300–$600 per square metre on average depending on materials, design complexity, slope and labour, with a standard 20m² deck at $8,000–$12,000.
The NZ pine benchmark
NZ-wide guides put a standard pine deck at $350–$500/m² fully installed, with hardwoods and composites above that and builder labour at $80–$120 per hour. Christchurch's flat sites keep most jobs in the lower half of the band.
The fence quote
Fences quote per lineal metre against height, timber profile, post depth and removal of the old fence. There is no honest flat rate, so the itemised spec is the comparison tool: Kennedy Contracting itemises fence, retaining and concrete separately.
Christchurch providers, compared
Six options for decks and fences across Christchurch and Canterbury, grouped by what they are best at. Hover a row for the detail that matters.
Common mistakes
Forgetting the 1.5 metre consent line: a deck more than 1.5 metres above the ground needs a building consent, and the barrier rules apply from 1 metre. Deck Builders Christchurch handles consented elevated decks; a casual quote that ignores the height question is a problem later.
Not talking to the neighbour before the fence: the Fencing Act 1978 makes boundary fences a shared cost by default, served by notice. A fence built without the conversation is a fence you may pay for entirely yourself, or a dispute you did not need.
Comparing fence quotes by metre without the spec: height, paling profile, post depth, rails, and whether old fence removal is included change the per-metre number dramatically. Get the spec in writing and compare like for like.
Skipping the footing question on decks: Canterbury frosts are mild on structures, but soft or made-up ground (common in eastern suburbs and new subdivisions) needs proper pile depth. A deck that moves in its first winter was cheap for a reason.
Assuming retaining is just landscaping: retaining walls over 1.5 metres, or carrying a load like a driveway, need a building consent and engineering. Kennedy Contracting does retaining as a named service; a landscaper quoting a big wall without mentioning consent is a red flag.
Letting a deck quote skip the timber spec: NZ guides put pine decks at $350–$500/m² installed and hardwoods higher, and the gap is durability as much as looks. Ask what timber, what treatment, what fixings, and what the maintenance schedule actually is.
FAQ
How much does a deck cost in Christchurch?
Deck Builders Christchurch publishes a local guide: $300–$600 per square metre on average, with a standard 20m² deck at $8,000–$12,000 depending on materials and design. NZ-wide guides put basic pine at $350–$500/m² fully installed and hardwoods higher. Elevated decks needing consent and engineering sit at the top of the range.
How much does a fence cost in Christchurch?
Fences are quoted per lineal metre and the spread is spec-driven: height, timber profile, post depth, gates and old fence removal. Every provider here quotes after a site visit or instant-quote form, and Kennedy Contracting itemises fence, retaining and concrete separately so the numbers are comparable. Use the Fencing Act to share boundary costs with the neighbour.
Do I need a building consent for a deck?
A deck more than 1.5 metres above ground needs a building consent through Christchurch City Council, and barriers are required where the fall height exceeds 1 metre. Low ground-level decks usually do not need consent. If your quote does not mention the height rules, ask why.
Who pays for a boundary fence?
Under the Fencing Act 1978, adjoining owners share the cost of a reasonable boundary fence. Serve a fencing notice, agree the spec, and split the bill. If the neighbour will not engage, the Act has a process, and if you build without notice you generally pay for all of it.
Pine, hardwood or composite?
Treated pine is the value default at $350–$500/m² installed in NZ guides and lasts well if maintained. Hardwood (kwila, garapa) costs more upfront and looks better longer. Composite costs the most upfront and the least in maintenance. In Christchurch's dry nor'west summers and frosty winters, all three work; the maintenance honesty of the installer matters more than the material pitch.
Decks run $300–$600/m² in the published local guide (20m² at $8,000–$12,000), and fences quote per metre against a spec. Deck Builders Christchurch publishes its numbers; Kennedy Contracting handles fence-plus-retaining packages; Fence Builders Christchurch and Jim's Fencing price boundaries fast; Janssen and Pete's bundle outdoor work into bigger contracts. Serve the fencing notice before you build, respect the 1.5 metre consent line, and compare specs, not just per-metre numbers.