Deck Builders Sydney

Fully installed decks in Sydney run from around $899 to $1,355 per square metre depending on the board. Treated pine starts at $899–$989, merbau $929–$1,022 and Australian hardwood $980–$1,239. On the composite side, TimberTech AZEK Prime+ runs $933–$1,026, Trex $950–$1,199, and Millboard and AZEK Vintage sit at the premium end up to $1,355. That price includes piers, substructure, attachments, under-deck oiling, deck boards, deliveries, waste removal and a final clean on completion. Those are standard-block figures — elevated and multi-level decks, steep or rocky sites, stairs, balustrades and handrails, and anything needing a service relocation or council approval are quoted separately. For an instant ballpark on your deck size, try our free deck cost calculator, then we’ll confirm a fixed price at a free consultation.

Yes. UrbanArch is fully licensed and insured under NSW builder licence 238750C, and every deck we build is backed by a 10-year workmanship warranty, issued in writing after the three-month inspection. We have also been a TrexPro® Partner since 2019, listed in Trex Australia’s official installer directory. UrbanArch is a father-and-son business established in 2017 with more than 20 years of trade experience behind it. Tony prices every job himself, a dedicated site supervisor runs your build and stays your point of contact from check measure to final inspection, and the teams on site are ones we have trained to our standards

We build decks, staircases, balustrades, privacy screens and pergolas across greater Sydney — including the Sutherland Shire, the Hills District, the Eastern Suburbs, the Inner West and Hunters Hill — plus Wollongong, the Illawarra and the Southern Highlands. If you are unsure whether your suburb is covered, give us a call and we’ll tell you straight away.

Neither is better across the board — it depends on the site and how much upkeep you want. Composite (Trex, Millboard, TimberTech AZEK) never needs oiling, won’t splinter and holds its colour, which suits shaded courtyards, pool surrounds and anyone who doesn’t want annual maintenance. Australian hardwood — spotted gum, blackbutt, ironbark — looks right on a period home and costs less up front, but needs re-oiling every year or two. Composite runs $933–$1,355 per square metre installed and hardwood $899–$1,239. We’ll walk your yard and tell you which one we’d use.

Often not. A rear deck generally falls under exempt development when it sits behind the front building line, is no more than 1 metre above ground level and is set back at least 900mm from each boundary. What pushes it into a DA is extra height, a heritage listing or conservation area, flood or bushfire land, or building over a Sydney Water main. Councils differ, so we check your property before we quote — and if approval is needed, preparing and lodging it is part of the job, not an extra.

Most smaller decks take five to seven days on site. Larger builds run two to three weeks. The bigger variable is what happens before we start — design, material lead times and any council approval — so you get a start date and a finish date in the quote, and your site supervisor tells you straight away if either moves.

Ask three things. Is the licence number on their website, and does it check out on the NSW Fair Trading register. What’s actually included in the square metre rate — piers, substructure, waste removal, or just boards and labour. And who runs the job day to day. A quote that’s $200/m² cheaper usually means those things come back as variations later.

Ours includes piers, substructure, attachments, under-deck oiling, deck boards, deliveries, waste removal and a final clean, with a 10-year workmanship warranty in writing after the three-month inspection. If a quote doesn’t itemise the substructure and the waste, ask why before you compare it on price.