Best builders & renovation companies in Canning Vale & Gosnells, WA (2026)
Table of Contents
These are the best-rated builders and renovation companies working Canning Vale, Gosnells and Perth’s south-east corridor: Thornlie, Cannington, Armadale and Kelmscott. They’re ranked on real Google reviews, not on who paid us. Building is a service-area trade, run off a ute, a site office and a project schedule rather than a shopfront, so this is an honest read of the operators genuinely working this stretch, whether you’re after a kitchen or bathroom renovation in Canning Vale, a knock-down-rebuild in Gosnells, or an extension in Armadale. One thing to know up front: builders collect far fewer Google reviews than plumbers or pest controllers, because most people build or renovate once or twice in a lifetime, so the review counts here look smaller than on our other trade pages. The area has its own build profile: Thornlie and Gosnells are full of 1970s-90s brick-and-tile homes that renovate and extend well once you budget for what’s behind the walls, Canning Vale is mostly 1990s-2000s project homes better suited to kitchen, bathroom and alfresco upgrades than structural work, and out towards Armadale and Kelmscott the blocks get bigger and the ground starts to change, with clay and reactive soils in the foothills adding to footing and site costs. Whatever the job, get a fixed-price contract, a registered builder and home indemnity insurance sighted before any money changes hands.
Featured builders
These spots are for Canning Vale, Gosnells and Armadale builders and renovators who want to stand out on this page. None are taken yet, so the full review-ranked list is right below. That ranking is earned off Google reviews and never for sale. Are you a registered builder or renovation company working Thornlie, Cannington or Kelmscott? Featured spots start at $50 a year.
⭐ 153 Google reviews behind this list
📍 Canning Vale, Gosnells & Armadale, WA
🔄 Updated monthly
How we ranked these builders
- Google reviews do the ranking. We start with every builder’s live Google star rating and the number of reviews behind it, pulled fresh from Google Maps.
- Rating, weighted by volume. A 5.0 off one or two jobs isn’t proof yet, so we weight the score by review count. A proven rating from a solid client base counts for more than a perfect score from a handful. Direct Homes WA carries by far the biggest review base of anyone here (41) at a solid 4.5, and IQ Construction backs up a 4.4 with 39 reviews, both sit below the smaller 5.0-rated operators under our rating-first rule.
- Fewer reviews than other trades, on purpose. People build or renovate rarely, so builders gather far fewer Google reviews than a plumber or a pest controller doing dozens of jobs a week. A builder with 10-25 genuine reviews already has a strong track record for this trade. We’ve judged these on the builder yardstick, not against the review counts you’d see on our plumbing or pest control pages.
- Serving the cluster suburbs, honestly framed. Building is a mobile trade and most builders list a head office rather than a shopfront on the strip. Renovate Right is based right on Bannister Rd in Canning Vale, IQ Construction and Direct Homes WA are both based in Armadale, and BD Living is just over the boundary in Maddington; the rest are established Perth operators who work this corridor regularly. We’ve flagged the locally based ones.
- Builders, not tradies or suppliers. We only counted businesses doing the actual building or renovation project management, not individual trades or building-material suppliers.
Xtend Home Improvements
Xtend tops the list on a perfect 5.0 across 21 reviews, the deepest clean record on this page. Clients call out tidy, professional tradespeople and a crew that leaves the site clean at the end of each day, not just at handover. They cover general home improvements through to larger renovations and extensions across the Canning Vale, Gosnells and Armadale corridor.
Nautilus Co
A specialist bathroom remodeler with a clean 5.0 from 17 reviews. If your job is a full bathroom strip-out and refit rather than a whole-house build, Nautilus Co is the sharper pick over a general builder, and they service the Canning Vale and south-east corridor as part of their Perth-wide run.
Halligan’s Building
A small custom home builder with a perfect 5.0 from 7 reviews and a service area centred squarely on Gosnells, Armadale and Kelmscott. Fewer jobs on the board than the bigger operators here, but every review so far is a clean five stars.
4.9
(15 reviews)
4.7
(13 reviews)
4.5
(41 reviews)
4.4
(39 reviews)
What building and renovation work actually costs in Canning Vale, Gosnells & Armadale (2026)
| Job | Typical cost | What moves the price |
|---|---|---|
| Bathroom renovation (full strip-out and refit) | $18,000-$40,000 | Layout changes, waterproofing, tiling area, fixtures and tapware, moving plumbing, second-storey access |
| Kitchen renovation (full) | $22,000-$60,000 | Cabinetry and stone, appliances, moving services, structural wall removal, high-end finishes |
| Room addition / rear extension (ground floor) | $2,500-$4,500 / m² | Site access, footings on sandy or limestone ground, matching the existing roofline and brickwork, finishes |
| Second-storey addition | $280,000-$600,000+ | Engineering, existing footings, staying in the house during the build, structural upgrades, extra glazing and engineering |
| Whole-house renovation (cosmetic to structural) | $120,000-$400,000+ | Extent of structural work, kitchen and bathrooms, re-wire and re-plumb, age and condition of the home |
| New custom home (build only, per m²) | $2,200-$4,000+ / m² | Single vs double storey, spec level, block slope and soil, bespoke design |
| Knock-down-rebuild (demolition + new home) | $450,000-$900,000+ | Demolition and site clearing, asbestos removal on older homes, home size and spec, reactive clay in the foothill suburbs |
| Granny flat / ancillary dwelling | $120,000-$260,000 | Size, kitchen and bathroom fit-out, connecting services, site access, whether it’s transportable or built on site |
| Patio, alfresco or outdoor living | $8,000-$40,000 | Size, roof type, decking, flooring, whether it ties into the house structure |
| Home indemnity insurance (builder arranges, on work over $20k) | Built into contract | Contract value; legally required in WA and passed on in the build price |
The south-east corridor carries its own build profile worth pricing in. Thornlie and Gosnells are full of 1970s-90s brick-and-tile homes that renovate and extend well, but on an older home budget for surprises once the walls open up: asbestos in eaves, fences and old sheeting, and dated wiring or plumbing that a good builder will flag before you sign, not after. Canning Vale is mostly 1990s-2000s project homes in solid condition, better suited to kitchen, bathroom and alfresco upgrades than major structural work. Out towards Armadale, Kelmscott and the foothills, blocks get bigger and the ground starts to change, clay and reactive soils push up footing and site costs on new builds and knock-down-rebuilds, so get a geotechnical report before you fix a price. And whatever the job, the big cost driver is scope creep: every extra decided on-site after the contract is signed is a variation, and variations are what blow out an otherwise sensible budget.
Don’t get ripped off: red flags
- Not a registered builder. In WA, residential building work over a set value must be carried out by a builder registered with the Building Services Board. Ask for the registration number and check it on the Building and Energy (DMIRS) register before you sign. An unregistered “builder” leaves you with no proper comeback.
- A deposit over the legal cap. Under WA’s home building contract rules the deposit is capped at 6.5% of the contract price. Anyone asking for 10, 20 or 30 per cent up front is breaking the rules and putting your money at risk. Walk away.
- No home indemnity insurance. For residential work over $20,000, the builder must take out home indemnity insurance and give you the certificate before they take a deposit or start. It protects you if they die, disappear or go insolvent mid-build. No certificate, no start.
- No written contract, or a vague one. Building work over the WA threshold needs a proper written contract with a fixed scope, a fixed price or a clear pricing basis, and a schedule of progress payments. A one-page quote with “the rest TBC” is how disputes start.
- Progress payments not tied to stages. You should pay in stages against work completed, deposit, slab, plate height, lock-up, fit-out, practical completion, not big lump sums ahead of the work. Paying well ahead of the build leaves you exposed if it stalls.
- The quote is thousands cheaper than everyone else. On a build, the lowball quote is usually the most expensive in the end, either it’s missing scope that comes back as variations, or the finishes are stripped down to hit the number. Compare quotes on identical scope and specification.
- Cash discounts and “start Monday” pressure. A builder pushing a cash deal, no contract, or urgency to sign today is a builder to avoid. Good builders have a waitlist and work to a contract.
- Vague on the building permit. Nearly all structural work needs a building permit from the local council or a private certifier. If a builder shrugs off permits or offers to “do it without”, you wear the risk when you sell or insure.
- No allowances spelled out. Watch for “prime cost” and “provisional sum” allowances set artificially low, for tiles, tapware, flooring or site works, so the headline price looks sharp and blows out later. Ask what each allowance assumes.
- Won’t give references or show finished work. A builder proud of their work will happily point you to a recent finished home or a client to ring. Reluctance is a tell.
Before you hire: quick checklist
- Registered builder. Confirm the builder or company holds current registration with the WA Building Services Board and check the number on the Building and Energy register. It’s a legal requirement for residential work, not a nice-to-have.
- Written contract on the right terms. Get a proper written building contract with a fixed scope, the price or pricing basis, the progress-payment schedule and the finish allowances all spelled out before any money changes hands.
- Deposit within the cap. Check the deposit is no more than 6.5% of the contract price, the WA legal maximum. Anything higher is a warning sign.
- Home indemnity insurance certificate. For work over $20,000, sight the home indemnity insurance certificate before you pay a deposit or let work start.
- Building permit sorted. Confirm who’s obtaining the building permit and that it’s in place before structural work begins.
- Right builder for the job. Match the builder to the project, a volume new-home builder, a custom builder and a renovation specialist each suit different work. Ask to see a recent finished job like yours.
- Allowances and variations. Understand every prime-cost and provisional-sum allowance, and how variations are priced and approved, before you sign. This is where budgets blow out.
- Recent, specific reviews and references. Look for recent reviews that mention the actual build or reno, and ask for a client or two you can call. A steady stream beats one old burst of five stars.
Frequently asked
How did you rank these builders?
By their live Google star rating and the number of reviews behind it, pulled from Google Maps. We rank by star rating first, and break ties by review volume, which is why Xtend Home Improvements (5.0 from 21 reviews) leads the page ahead of Direct Homes WA, which actually has the biggest review base on the page (41) at a solid 4.5. Building is a service-area trade, so rather than insisting every business sits inside the cluster, we checked each one genuinely services Canning Vale, Gosnells and the surrounding suburbs, and flagged the locally based operators (Renovate Right, IQ Construction, Direct Homes WA, BD Living).
Which areas does this cover?
Canning Vale, Thornlie, Gosnells, Cannington, Armadale and Kelmscott. Every business on this page was checked to genuinely service this stretch of Perth’s south-east corridor.
Are these paid placements?
No. This list is ordered on Google review data. Businesses can pay for a “Featured” spot at the top of the page, clearly marked as Featured, but that never changes where anyone sits in the review-based ranking below it.
Why are the review counts lower than your other trade pages?
Because building and renovating isn’t a job most homeowners do more than once or twice in a lifetime. A plumber or pest controller might do dozens of jobs a week and rack up reviews fast; a builder might finish six to ten a year. A builder sitting on 15-40 reviews has genuinely done the work to earn them, so we judge this trade on its own yardstick rather than against busier trades.
Does my builder have to be registered in WA?
Yes. Residential building work over a set value in Western Australia must be carried out by a builder registered with the Building Services Board, administered by Building and Energy within DMIRS. You can check a builder’s registration on the public register. Always confirm registration before you sign, and be wary of anyone who can’t give you a number. This is general information, not legal advice, so check your specific job with Building and Energy WA if you’re unsure.
How much deposit can a builder ask for?
Under WA’s home building contract rules, the deposit on a residential building contract is capped at 6.5% of the contract price. If a builder asks for more up front, that’s a warning sign. After the deposit you should pay in stages against completed work, not in large lump sums ahead of the build. Again, general information rather than legal advice, so check the current rules with Building and Energy WA.
What is home indemnity insurance and do I need it?
Home indemnity insurance protects you, the owner, if your builder dies, disappears or becomes insolvent before the work is finished or a warranty issue arises. In WA it’s required for residential building work over $20,000, and the builder must arrange it and give you the certificate before taking a deposit or starting work. Don’t let a build begin without sighting that certificate.
Should I get a fixed-price contract?
For most home builds and renovations, a fixed-price contract on a clearly defined scope is the safest way to keep control of your budget. The catch is variations: any change once the build starts is priced as a variation, and that’s where a tidy fixed price can blow out. Lock the scope, the finishes and the allowances down in the contract before work begins, and make sure the contract sets out how variations are priced and approved.
How often is this page updated?
Monthly. Ratings and review counts move, new builders earn their spot, and we re-pull the data so the list stays honest and current. As Canning Vale, Gosnells and Armadale builders build up reviews, expect this list to shift.
Are you a builder in Canning Vale, Gosnells or Armadale?
Get in front of homeowners who are ready to build or renovate. Claim your free listing, or ask about a Featured spot on this page.
Last updated: July 2026