5 Questions to Ask Before Hiring Deck Builders

A new deck is one of the biggest additions you can make to an Australian home, so choosing the right deck builder matters just as much as choosing the right decking material. The wrong contractor can turn an exciting renovation into a costly, drawn-out headache, while the right one will deliver a deck that looks great and performs for decades. Before you sign a quote, it pays to ask a few pointed questions. Here are the five you should put to every deck builder on your shortlist, plus how to find a trusted installer near you. 

1. Are You Licensed and Insured?

This is the non-negotiable first question. In Australia, decking work often falls under domestic building regulations, particularly once a deck exceeds a certain height or involves structural framing. Ask to see a current builder’s licence and proof of public liability insurance before any work begins. A licensed, insured builder protects you if something goes wrong on site, and it’s a strong early signal that you’re dealing with a genuine professional rather than an unqualified operator chasing cash jobs. 

2. Have You Installed Composite Decking Before?

Composite and PVC decking install differently to traditional timber, so experience matters. Products like WoodEvo’s HOME range (wood-plastic composite) and ADVANCED range (foamed PVC core with ASA capping) each come in specific board profiles, including grooved, edge, square and fascia boards, and each has its own joist spacing, expansion allowance and fixing requirements. A builder who has installed composite decking before will know how to handle these details correctly, avoid common mistakes like over-tightening fixings or ignoring expansion gaps, and finish the job to a standard that protects your manufacturer’s warranty. 

3. Can I See Examples of Your Previous Work?

Photos of completed decks, and ideally the contact details of past clients, tell you far more than a sales pitch ever could. Look closely at board alignment, consistent colour across the deck, neatly finished edges and clean fixing lines. If a builder is proud of their work, they’ll be happy to show it off. If they’re reluctant to provide references or examples, treat that as a red flag. 

4. What Warranty Do You Offer on Workmanship?

It’s important to understand that a manufacturer’s product warranty and a builder’s workmanship warranty are two different things. WoodEvo backs its HOME range decking with a 25-year residential warranty (10-year commercial) and its ADVANCED range with a 30-year residential warranty (15-year commercial), covering the boards themselves. But if a deck is installed incorrectly, poor workmanship can void that product warranty entirely. Always ask your builder what separate guarantee they offer on their installation labour, and get it in writing. 

5. Do You Follow the Manufacturer’s Installation Guidelines?

Correct installation is what makes composite decking perform the way it’s designed to, especially in Australia’s harsh conditions. This means following the specified joist centres, whether that’s 450mm for residential HOME range decking or 400-450mm for ADVANCED range boards, using the recommended fixings, and leaving the correct expansion gaps. This is particularly important in BAL29 bushfire-prone areas, coastal locations exposed to salt air, and anywhere subject to extreme temperature swings. Ask your builder if they reference official manufacturer installation guides, such as those available on WoodEvo’s Guides and Resources page, rather than relying on generic timber-decking techniques. 

Bonus Tip: Get Multiple Quotes and Compare Like for Like 

It’s tempting to go with the first quote that lands in your inbox, but a bit of patience here pays off. Get at least three quotes for your project and make sure each one is comparing the same thing: the same decking product, the same board profile, the same square metreage, and the same scope of work, including any substructure, fascia and edging. A quote that looks cheaper on paper may be leaving out fascia boards, trims or site preparation, only for those costs to appear later. Ask each builder to itemise materials and labour separately so you can see exactly what you’re paying for and where the differences lie. 

Finding a Trusted WoodEvo Installer 

Once you know the right questions to ask, the easiest next step is to connect with a builder who already knows WoodEvo products inside and out. WoodEvo’s Installer Finder tool lets you search for and verify installers experienced with our HOME, ADVANCED, CLADDING and BATTEN ranges, so you can skip the guesswork. Before you get quotes, it’s also worth using the Decking Calculator to estimate how many boards your project will need, and ordering a free physical sample so you can see and feel the colour and finish in person before committing. 

Hiring the right deck builder is the difference between a deck you enjoy for one summer and one that adds value to your home for decades. Ask these five questions, do your research, and you’ll be well on your way to a deck that’s built right the first time.