Home Extensions
Adding space to an existing home is one of the trickiest kinds of build — you’re marrying new structure to old, and the join has to be right structurally and watertight for good. As registered WA builders (BC105819) who came up through roofing, that join is exactly where we’re strongest.
We design, build and certify home extensions across Perth, and we handle the part that most often goes wrong on an extension: tying the new roof cleanly into the existing one.
Builders Registration BC105819 · Painters Registration PC102072 · Patent ID AU-A-2020100623
Extensions across Perth
Perth blocks and Perth families both grow, and moving is expensive. A well-built extension — an extra bedroom, a bigger living area, a second storey, an alfresco that actually works year-round — adds the space you need and real value to the home, without the cost and upheaval of relocating.
The difference between an extension that looks bolted-on and one that looks like it was always there comes down to matching — rooflines, materials, proportions — and to getting the structural connection right. Both are things we do for a living.
What our extensions cover
We take on ground-floor additions, second-storey additions, and outdoor living structures like alfrescos and patios, along with the structural work that ties them into the existing home. Where an extension changes the roofline — and most do — we design and build the new roof and its connection to the old one as part of the same job.
That single-team approach avoids the classic extension problem: a builder who frames it and a separate roofer who has to make the join work after the fact.
The roof tie-in advantage
On an extension, the weak point is almost always where new meets old on the roof. Get it wrong and you get leaks, mismatched tiles or sheeting, and flashing that fails within a few winters. This is our origin trade — we detail that junction properly, match the roofing to the existing home where we can, and weatherproof it to last.
It’s the single biggest reason a roofing-based registered builder is worth having on an extension.
Why registered builders matter here
An extension is structural by definition — new loads, new connections, often changes to the existing structure to carry them. That work must be done by a registered builder and certified. We do both in-house as the builder of record (BC105819), so the structural side is correct, documented and signed off.
We also manage the building approvals an extension needs, so the process is handled rather than handed back to you.
Why Powerdrive for your extension
Perth-based and building since 1997, registered builders (BC105819) and painters (PC102072), Dulux AcraTex accredited, with a 10-year workmanship warranty behind the work. For an extension specifically, our roofing and structural background is the edge — the new-to-old junction, the part most likely to fail, is the part we know best.
Common questions
Do you build second-storey additions?
Yes. As registered WA builders we handle structural extensions including second-storey additions, along with the reinforcement of the existing structure needed to carry them.
Can you match the extension to my existing home and roof?
Yes — matching rooflines, tiles or sheeting and proportions so the extension reads as part of the original home is exactly what our roofing background lets us do well.
Do I need council approval for an extension?
Almost always, yes. We manage the building approval and documentation as part of the job.
Who handles where the new roof meets the old?
We do — in-house. That junction is the most common failure point on an extension, and as roofing specialists we detail and weatherproof it properly rather than leaving it to chance.
Is the structural work certified?
Yes. We’re the registered builder of record (BC105819), so we carry out and certify the structural work and provide the documentation.
Do you provide a warranty?
Yes — a 10-year workmanship warranty, plus the applicable Dulux warranty on any AcraTex coating work.
Recent projects
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