How Pennant Hills houses are built
Pennant Hills spans ridgelines and gullies between Pennant Hills Road and the bushland toward the national parks. Older houses cluster near the station and along the ridge, while the streets falling away toward the valleys are dominated by homes from the sixties and seventies built to follow the slope.
That produces three common house types, each with its own bathroom:
- Older homes near the station, some with period character, where the bathroom may have been updated once in the sixties or seventies
- Split-levels and multi-level brick homes, with the bathroom on a different level from the living areas and sometimes over a garage
- Units and townhouses close to the station and shops
Split-level bathrooms
The split-level is the defining Pennant Hills house of its era. Bedrooms on one level, living on another, and the garage tucked under part of the house.
Bathrooms over garages
When the bathroom sits above a garage, the floor is either timber framing or a suspended concrete slab. Both have advantages and risks.
The advantage is access. The plumber can often run new drainage through the garage ceiling instead of cutting into a slab-on-ground, so changing the position of a shower or toilet can cost less than you would expect.
The risk is what happens if the waterproofing fails. Water lands on the garage ceiling, the car or whatever is stored below. Detailing around the floor waste and at the wall junctions matters more here than almost anywhere.
A suspended slab must never be cut or core-drilled without checking the structure. Where a change needs it, engineering advice comes first.
Bathrooms on half-landings
Some split-levels put the bathroom a few steps up or down from the bedrooms. That affects:
- Accessibility, since the steps are part of the route to the shower
- Drainage fall to the sewer connection, which may run a long way under the house
- How materials get in, often via narrow internal stairs
Older homes near the station
Houses closer to the town centre can be older, with ornate ceilings, timber joinery and a bathroom that has been renovated once in a different era. These are good candidates for a bathroom that respects the house: a white hexagonal floor, a traditional mixer, a panelled or framed vanity.
Underneath, the same issues apply as in any older home: asbestos testing for any sheeting, a mortar-bed floor to remove, old pipework to replace and a proper membrane to install. If the house is a heritage item, check with Hornsby Shire Council before changing windows or external walls.
Sloping blocks and access
On a steep Pennant Hills block, getting materials in and rubbish out is part of the job. A skip may need to sit on the road with a permit, a bath may need to be carried down forty steps, and tiles arrive by the pallet. A realistic quote allows for that time.
Bush edges and damp
Streets backing onto bushland or sitting in a gully get less sun and more moisture. Bathrooms on the downhill, shaded side of the house need a ducted exhaust fan, moisture-resistant finishes and good subfloor ventilation checked while the floor is open. See waterproofing.
Units and townhouses
Pennant Hills has a mix of older walk-up units and newer apartment buildings near the station, plus townhouse complexes. Replacing waterproofing in any strata building usually needs owners corporation approval, and working hours and access are set by the building. See small bathroom renovations.
Costs in Pennant Hills
As a 2026 guide:
- Main bathroom in a split-level or older home: $27,000–$44,000
- Bathroom over a garage with a layout change: $32,000–$50,000
- Unit bathroom: $18,000–$29,000
- Ensuite: $18,000–$31,000
Asbestos removal, structural work and difficult access are additional. The cost guide explains the bands.
Nearby
We also work in Normanhurst, Hornsby, Waitara, Asquith and Berowra, plus Thornleigh, Westleigh and Beecroft.
Renovation work is carried out in partnership with Coastal Renovation Group, a licensed NSW builder. Licence and insurance details are provided on request.
Call 02 5926 2135 or send the room details through.
Questions people ask before they commit
Is it harder to renovate a bathroom that sits over a garage?
Not necessarily. Drainage can often be accessed through the garage ceiling, which makes plumbing changes easier. The critical detail is the waterproofing, because a leak lands directly on the garage below, and a suspended slab must not be cut without engineering advice.
Can a split-level bathroom have a level-entry shower?
Usually. On a timber floor the joists may be lowered or packed to create the fall; on a suspended slab a thicker screed or a recessed section may be used. The measure checks the floor structure before promising a hob-free design.
Are Pennant Hills units worth renovating?
Older units near the station often have original bathrooms that have not been touched. A renovation can make a significant difference to how the unit lives and leases, but strata approval and building access need to be planned first.