Council and strata approval for balustrades, explained.

One of the most common questions we get before a quote is whether replacing a balustrade needs council approval. The honest answer: usually not, but the exceptions matter, and strata is its own world. Here is how it works in NSW, as a guide rather than legal advice.

Like-for-like replacement is usually exempt

NSW planning rules treat many straightforward balustrade replacements as exempt development: no development application, no council sign-off, provided the new barrier meets the current building code and the work does not change the structure. Swapping a tired timber rail for a compliant steel or glass balustrade on your own house generally falls in this lane.

When it stops being simple

The exemptions have edges. Heritage-listed properties and conservation areas can require approval for changes visible from the street. Extending a balcony, raising a floor level or building a new deck brings the whole structure into scope, not just the rail. And anything structural, like new posts into an engineered slab, may need a certifier involved. None of this is a reason to avoid the work; it just changes the paperwork, and we tell you up front which lane your job is in.

The catch people miss: current code applies

An old balustrade that was legal when it was built can be replaced, but the replacement has to meet the code as it stands today: current heights, current gap rules, current loads. That is why a like-for-like copy of a 1980s rail is often not actually buildable. We design the replacement to comply from the start, so there is no surprise at certification.

Strata: the balustrade is probably not yours

In an apartment or townhouse, the balcony balustrade is almost always common property. That means the owners corporation approves and usually pays for the work, and it will want compliance documentation with the job. If you are an owner chasing a fix, the path runs through the strata manager. If you are the strata manager, we quote across multiple balconies at once and hand over the certification paperwork without being asked twice.

What we handle

We build every job to the current NCC, AS 1170 loads and, for glass, AS 1288, and we provide the documentation a certifier, council or strata report asks for. If your job needs more than an exempt pathway, we will tell you at the quote, not after the deposit.