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Composite Decking, Built Right, Across the Sutherland Shire.
Composite decking, done properly, start to finish.
Open Air Build designs and builds low-maintenance composite decks across the Sutherland Shire — from small courtyard decks to full outdoor entertaining areas.
New Composite Decks
Custom-designed composite decking built to suit your home, your block, and how you actually use the outdoor space — not a one-size-fits-all layout.
Get a Quote →Deck Replacements & Upgrades
Replacing tired timber decking with low-maintenance composite boards, often reusing the existing substructure to keep costs and build time down.
Get a Quote →Outdoor Entertaining Areas
Multi-level decks, poolside decking, and alfresco areas designed to add genuine everyday living space and long-term value to your home.
Get a Quote →Built fast. Built to last. Built properly.
Start Within 10 Days
Real availability, not a sales line — our crews move fast.
25-Year Warranty
Backed on every board, every build, for real peace of mind.
Adds Up To 5% Value
One of the highest-return additions you can make to your home.
Zero Maintenance
No sanding, oiling or painting — ever, in any Sydney season.
From enquiry to entertaining, in four steps.
Enquire
Tell us a bit about your space and what you're after.
Site Visit & Quote
We measure up, talk through options and send a clear, fixed quote.
Build Within 10 Days
Our crew starts fast and keeps your site clean the whole way through.
Enjoy Your Deck
Handover, walkthrough, and a 25-year warranty on the materials.
Deck builders serving the Sutherland Shire.
We build composite decks across Sutherland Shire and surrounding southern Sydney suburbs, including:
Locally owned. Locally built.
Open Air Build is a locally owned and operated composite decking company based in the Sutherland Shire, NSW. We specialise in designing and building low-maintenance composite decks for homeowners across Cronulla, Miranda, Sutherland, Caringbah, Menai and the surrounding southern Sydney suburbs.
Every deck we build is backed by a 25-year product warranty and finished to a standard that's built to handle the Sydney climate — sun, salt air and everything in between — without the sanding, oiling or painting that timber decking demands.
Because we're local, you're not dealing with a call centre or a rotating cast of subcontractors. You're dealing with the same crew from quote to handover, on a build timeline that starts within 10 days, not months.
Customer Review
"I honestly can't recommend Mike highly enough. From the very first quote through to the finished job, the whole process was seamless. The fact that he completed our entire deck renovation in just one week was incredible, but what impressed us even more was the quality of the work and the care he put into every detail."— Shannon
Everything you need to know before you enquire.
How long does a composite deck actually take to build?
Most standard residential decks are completed within 3–5 working days once we're on site, and we can typically start your build within 10 days of your quote being accepted.
Do you service my suburb in the Sutherland Shire?
We build across the Sutherland Shire and surrounding southern Sydney suburbs. Pop your suburb in the quote form and we'll confirm straight away.
What's actually covered under the 25-year warranty?
The 25-year warranty covers the composite decking product itself. We'll walk you through the full written terms at your quote.
Do I need council approval for a new deck?
It depends on the height and size of your deck. We'll let you know during your site visit whether your build needs approval and can guide you through it.
How much does composite decking cost compared to timber?
Composite decking typically costs more upfront than timber, but with zero ongoing sanding, oiling or staining, it usually works out cheaper over the life of the deck. We'll give you a clear, itemised quote so you can compare properly.
Get your free, no-obligation quote.
Tell us a bit about your project and we'll call you back — usually within a few hours, not days.