How to Quote a Patio Extension in Australia

What a patio quote covers

Before you price anything, pin down the design and list every part of the build. A complete patio quote spells all of this out:

• Dimensions and roof type — flat, gable or skillion, since the roof drives both cost and labour.
• Framing and posts — the material, size and span of beams and posts.
• Roofing — sheet or insulated panel, plus flashings and guttering.
• Site preparation — earthworks, levelling and any concrete slab.
• Footings — concrete and rebar, priced per post rather than lumped in.
• Council permits and engineering — where the design or site requires them.

Patio material costs in 2026

Costs swing widely with size, roof type and materials. A basic flat-roof patio in Colorbond steel with simple posts might run $4,000–$10,000 all up, while a larger gable or insulated-roof patio can reach $12,000–$25,000+. The materials themselves break down roughly like this:

Add concrete and rebar for the footings at $50–$150 per post, depending on depth, and allow another 5–10% for fasteners, flashings, guttering and other sundries. Those small lines are exactly the ones that disappear into a round number and come out of your margin.

Working out labour

Labour on a patio covers site prep, footing excavation, frame erection, roofing and the final cleanup. Price it on realistic hours, at typical rates of $70–$120/hour:

• A standard, moderately sized patio runs a two-person team 2–5 days (20–40 man-hours).
• Larger or more complex builds stretch to 5–10 days (40–80 man-hours) or more.
• Difficult site access slows every stage and can mean hiring equipment — add hours for it.
• Account for non-billable time: travel, supervision, material collection and mandatory council inspections.

Council approval and engineering

Approvals and engineering are part of the quote, not an afterthought. Verify the requirements for the site before you send a price, because they add both cost and lead time:

• A patio must comply with the National Construction Code (NCC) and the Building Code of Australia.
• Most patios need a council permit, and many need an engineer's design — particularly for wind loading, which varies by region.
• Permits and engineering take time as well as money; build the lead time into your program.
• Put permit and engineering fees in as their own line so the client sees they're a real cost, not your markup.

Common mistakes that eat your margin

1. Underestimating material quantities. Always build in a 5–10% buffer for wastage and offcuts. Quote the exact figure and you'll be buying the difference.
2. Neglecting site access. A tight or awkward yard slows every stage and can force equipment hire. Walk the site and price the access, not just the build.
3. Forgetting permits and engineering. Council permits and engineered designs add cost and lead time. Leave them out and they come straight off your margin.
4. Vague client expectations. Colours, finishes and features left unconfirmed become rework. Get the specifics in writing before you commit.
5. Skipping the site inspection. Underground services and uneven ground don't show up on a phone call. A proper site visit comes before the number.

Pro tips for a patio quote that wins

• Include a simple sketch or 3D render so the client can picture the finished patio and there's no argument over the design.
• State your insurance cover and the warranty period on both workmanship and materials.
• Propose a staged payment schedule — deposit, progress and final — tied to milestones.
• Verify council requirements and get any permits or engineering plans sorted before you quote.
• Offer optional add-ons like lighting, fans or screening to lift the value of the job.
• Do a thorough site visit to assess ground conditions, existing structures and access.

Frequently asked questions