A freestanding house on a quarter-acre block is the easy case. The Eastern Suburbs terrace is the hard one: no side access, shared walls, a facade on the footpath, and frequently a heritage listing.
Nearly everything about the standard approach has to change.
The access problem
There is no side passage. Equipment comes through the house or over the roof, or it does not come at all.
Rear lanes help where they exist, and in Paddington and Woollahra many do. Where they do not, the job is done with hand-carried gear and long hose runs, which is slower and prices accordingly.
Street frontage brings its own constraints: parking, pedestrians on the footpath directly under the work, and in some streets a council permit for working above a public thoroughfare. Scaffolding or an elevated platform on a narrow one-way street is a logistics exercise before it is a cleaning one.
The detail for these suburbs is in Woollahra and Paddington: tuckpointing, lead paint and zero setbacks.
Shared walls
A party wall means water you introduce can end up in someone else’s house.
Box gutters between terraces are the classic failure point — they are shared, they block, and when they overflow the water goes into both roof spaces. Cleaning one side without the other achieves little. The same problem in the Inner West is covered in Inner West terraces: box gutters and shared walls, and it applies identically here.
Practical point: talk to the neighbour before the work, not after. A wet patch appearing on their ceiling the day after your wash is a conversation worth pre-empting.
Heritage and the facade
Most of the Paddington and Woollahra terrace stock sits in conservation areas, and a lot of it is individually listed.
Three specific constraints.
Tuckpointing. The fine white lines in the mortar joints on a Victorian facade are a hand-applied decorative finish, not structural pointing. Any abrasive or high-pressure cleaning destroys it, and restoring it is specialist conservation work at conservation prices.
Lime mortar. Older brickwork is laid in lime, which is softer than the brick by design, so moisture escapes through the joint rather than the brick face. Modern cement repointing reverses that and causes the brick faces to fret. Acid cleaning dissolves the lime. See cleaning heritage homes in the Eastern Suburbs.
Lead paint. Anything pre-1970 may have it, and washing it is a controlled job with containment requirements — here.
Whether you need approval before cleaning is covered in heritage listings and conservation areas. The short answer is that straightforward cleaning usually does not, but anything involving repointing, rendering or surface treatment often does.
Rising damp
Terraces sit hard on the ground with footpaths and courtyards poured up against them, and the damp-proof course — where there is one — is frequently bridged.
The symptoms are efflorescence and fretting along the bottom courses, and the important thing is that washing makes it worse. Pressure drives water into masonry that already has a moisture problem.
Both are covered properly: fretting brickwork and rising damp and efflorescence on brick.
If the bottom of your facade is crumbling, the answer is drainage and pointing, not cleaning.
Where the water goes
A terrace drains to the street, and in the inner east the street drains to the harbour or to Centennial Park’s system with no treatment.
There is no garden to soak runoff into and nowhere to put it except a drain you are not allowed to use. On these jobs containment and collection is a real part of the method rather than a box to tick — the rules.
Courtyards and small spaces
The rear courtyard is usually paved, shaded by surrounding buildings, and permanently damp. Moss and algae establish fast, and on a small hard surface with a step down into the house that is a genuine slip issue — removing moss from pavers.
Many are sandstone flagging, which rules out acid and high pressure — how to clean sandstone pavers.
The sequence that works
Assess the masonry condition first, including tapping the render and checking the bottom courses. Confirm the heritage status. Agree access and talk to the neighbour. Then clean, at low pressure, with containment.
On a sound terrace facade the result is excellent. On one with a damp problem, the honest answer is to fix the water first.
More on the area in the Eastern Suburbs exterior cleaning guide and cleaning a Paddington heritage terrace.
