The housing
Wahroonga sits at the northern end of Ku-ring-gai's Federation belt, and the stock is much as it is through Killara and Pymble — substantial Federation and interwar houses on deep blocks, mature gardens, and bathrooms that have aged worse than anything else in the building.
Small, centrally planned, with a separate toilet next door and a suspended timber floor underneath. That last detail is what makes these houses good to renovate: drainage can move without cutting concrete, so the original plan is a fixable defect rather than a permanent constraint.
The question that comes up more here
Wahroonga has a higher share of long-tenure households than most of the North Shore, and the conversation about building a bathroom that still works in twenty years comes up correspondingly often.
It is worth having, and the practical answer is undramatic:
A level-entry shower. No hob to step over, with the fall set out properly across the wet area so the absence of a lip does not mean a wet floor.
A fixed glass panel instead of a swinging door. Removes the door arc, which is both a space gain and an access gain.
Blocking in the wall at rough-in. Noggins where a grab rail might one day go. This costs almost nothing while the wall is open and is genuinely expensive to retrofit into finished tiling. Even if a rail is never fitted, the option is banked.
Lighting at the mirror, and a floor tile with real slip resistance rather than a polished one that looks sharper in a showroom.
None of that reads as an accessible bathroom. It reads as a well-designed one, which is rather the point. Bath or walk-in shower covers the decision in more depth.
Heritage, briefly
Parts of Wahroonga sit within Ku-ring-gai conservation areas and some properties are individually listed. The distinction matters — conservation area controls are about external character, while an individual listing can extend to internal fabric.
A planning certificate answers it for your property, cheaply, before anything is designed. The heritage guide covers what each means in practice.
The layout change
As across the Ku-ring-gai Federation belt, combining the bathroom with the separate toilet next door is the highest-value single change, and adding an ensuite off the main bedroom is the second.
Establish whether the dividing wall is structural at quoting stage. Where it is, a beam handles it — but it belongs in the quote rather than in a discovery once demolition has started.
What strip-out reveals
A century of use and usually one mid-century refit. Expect the possibility of deteriorated framing, cast-iron waste at the end of its life, and asbestos-containing sheeting behind the tiles — see asbestos in old bathrooms for how that is handled and who is licensed to do it.
What it costs
Wahroonga jobs sit toward the upper bands, reflecting room size and specification. A main bathroom with a layout change generally runs $25,000–$40,000 and above. See the 2026 cost bands and how a renovation runs.
Nearby
We also work in Pymble, Gordon and St Ives, plus Turramurra and Warrawee.
Call 02 4602 1201 or send the room details through.
Frequently asked questions
What does an accessible bathroom actually involve?
Less than most people picture. A level-entry shower with no hob, falls set out properly, a fixed glass panel instead of a swinging door, and blocking in the wall at rough-in so a grab rail can be added later. None of it looks institutional and all of it is far cheaper to build in than to retrofit.
Is Wahroonga in a heritage conservation area?
Parts of it are, and there are individually listed properties as well. A planning certificate from Ku-ring-gai Council settles which applies to your property. Conservation area controls focus on external character, so internal wet-area work is generally not their target.
Can the layout change in a Federation house here?
Usually. The suspended timber floors mean drainage can move without cutting concrete, which puts combining the bathroom and separate toilet, or adding an ensuite, within reach. The check to do first is whether the wall involved is carrying load.
How long will we be without the bathroom?
Three to four working weeks where the layout stays put, four to five where a wall is coming out. If it is the only bathroom in the house, make alternative arrangements for the full period — this is consistently the part people underestimate.