Strata Bathroom Renovation Cost & Approval (Sydney, 2026)

Most bathroom cost guides price the tiles, the vanity and the labour, then stop. In a strata building that is only half the bill. A strata bathroom carries a second layer of cost that a freestanding house never sees: a registered by-law, a special resolution, a waterproofing sign-off, weeks of approval time, and a permanent transfer of leak liability onto you. This guide prices that strata layer in full, because it is the part that catches owners out.

How much does a strata bathroom renovation cost in Sydney?

The build for a strata-compliant apartment bathroom runs $15,000 to $30,000 or more, the same honest bands as any quality Sydney bathroom. The strata layer adds roughly $1,100 to $1,200 in approval costs and a 6 to 12 week wait before work starts. Here is the full picture, build plus strata, in one place.

Build bands are our real Fine Touch Group ranges across 1,000+ Sydney apartment bathrooms. By-law drafting and the $175.70 registration fee are the standard NSW figures, lodged with NSW Land Registry Services. Your exact number depends on finishes, your scheme, and your strata lawyer.

The strata approval path, step by step

A strata bathroom is not a matter of asking the building manager. Because the work touches waterproofing, which is common property, the approval runs through a formal pathway set by the Strata Schemes Management Act 2015. This is the route, and where the time and money go.

The by-law and special-resolution requirement come from section 108 of the Strata Schemes Management Act 2015 (NSW).

Why a bathroom counts as major works

Strata renovations fall into three buckets. Cosmetic work like painting or a new mirror needs no approval. Minor renovations like a kitchen or hard flooring need an ordinary resolution but no by-law. A bathroom is the third bucket: major works. The moment you disturb the waterproofing membrane, you are altering common property, and section 108 of the Act requires a special resolution and a registered by-law. There is no way around it for a genuine bathroom renovation, only ways to get it done cleanly.

That reaction is the rule, not the exception. The by-law is a genuine, unavoidable cost, and it is the single item most owners forget to budget for. It is also the item that protects everyone, including you, by setting out in writing who fixes the waterproofing if it ever fails.

The approval wait is a cost most quotes hide

Because a by-law needs a special resolution passed at a general meeting, a strata bathroom carries a lead time a house bathroom does not. Realistically that is 6 to 12 weeks from application to approval. If your scheme's next annual general meeting is months off, you may have to request an extraordinary general meeting, which the committee can charge for. None of this is build time, it is waiting time, and it sits before a single tile comes off the wall.

Can I save money by skipping the strata steps?

It is tempting to treat the by-law as red tape and renovate quietly, and plenty of owners try. It is the wrong move. Work done without approval can be ordered undone, the owners corporation can pursue you, and a future buyer's conveyancer will find the missing by-law. Worse, under section 108(5) of the Act, without a registered by-law the leak liability may never properly transfer, leaving the question of who pays for a failed membrane open and contested.

The honest version of a cheap strata bathroom is one that skips the by-law and reuses the old waterproofing. In an apartment that is exactly what leaks into the unit below and becomes a dispute. A done-right strata bathroom starts around $15,000 for the build, plus roughly $1,100 to $1,200 for the by-law and registration, because that is what it costs to do the approval, the waterproofing and the sign-off properly.

Frequently asked questions