Changing Floor Coverings in Strata: A State-by-State Guide for 2026

The quick rule

Carpet over carpet, or replacing existing soft floor coverings, is almost always cosmetic and does not need approval.
Removing soft floor coverings and installing hard floors (timber, engineered, laminate, vinyl planks, tiles, stone) almost always needs approval, in every state.
The reason is acoustic. Hard floors transmit impact noise to the apartment below, and that noise is what triggers tribunal disputes years after the install.
Wet area floor changes are a separate problem because waterproofing is usually common property.

Most owners assume the floor inside their apartment is "theirs" and that what they choose to lay on it is a private decision. In strata, that assumption is wrong almost everywhere in Australia. The flooring sits inside your lot, but the impact noise it generates lands in another lot, and the structural slab under it is usually common property. Once you understand that, the state-by-state rules stop feeling arbitrary.

This guide walks through what is required in each Australian jurisdiction before you change floor coverings, what acoustic standards typically apply, and what a clean approval pack looks like. It also covers the most common disputes after a floor goes in, so committees and owners can avoid them on the way through, not after the trades have left.

Why apartment floors are different

Three things make apartment flooring different from house flooring.

Impact noise. A footfall on a timber floor on level 8 lands in the ceiling of level 7. A dropped saucepan, a child running, a chair leg pulled across the floor — all of these become noise events in a different lot. Carpet absorbs most of that energy. Hard floors do not, unless the underlay and substrate are specified properly.

Common property under your feet. In most Australian strata legislation, the structural floor slab is common property. The membrane in a bathroom is usually common property. The lot boundary is typically the upper surface of the slab, with everything above it (including the floor covering, screed and waterproofing in some interpretations) being part of the lot. That seems clear until you realise that an aggressive floor removal can damage the slab, the membrane, or the acoustic isolation between lots. Once that happens, the cost is no longer private.

By-law overlay. Most schemes have a by-law about hard floor coverings. Many of these by-laws were written 10 to 20 years ago and have not kept up with modern acoustic standards. Owners who follow the by-law literally can still end up in a noise complaint, and committees who ignore the by-law altogether end up unable to enforce it later.

The acoustic standard committees should care about

The National Construction Code (NCC) sets minimum acoustic performance for separating floors in Class 2 (apartment) buildings. The two numbers that matter:

Rw + Ctr ≥ 50 — airborne sound insulation between vertically adjacent lots.
Ln,w ≤ 62 — weighted normalised impact sound pressure level. Lower is better.

These are minimums for new construction. The vast majority of apartment by-laws that prescribe floor performance reference these or stricter values, often Ln,w ≤ 55 or ≤ 50 for premium buildings. Older schemes may not reference any number at all, which is why the by-law itself is sometimes the wrong thing to rely on.

The practical implication for owners: a "10mm rubber underlay" claim from a flooring supplier is not an acoustic certificate. A proper application includes a test report from an accredited acoustic laboratory, ideally for the exact floor system being installed (substrate + underlay + finished floor as a stack), or a desktop assessment by an acoustic engineer that references the building's slab thickness and existing ceiling system.

State-by-state rules

The legislation differs in language but the conclusion is similar across the country: hard floors usually need approval, and the approval mechanism is set by the scheme's by-laws.

New South Wales

Floor coverings sit at the boundary of two categories under the Strata Schemes Management Act 2015 and Regulation 2016.

Cosmetic work (Section 109): includes installing or replacing carpet, and does not need approval.
Minor renovations (Section 110): explicitly includes "installing or replacing wood or other hard floors". Approval is required by ordinary resolution at a general meeting, unless the scheme has passed a by-law allowing the strata committee to approve minor renovation applications.

The 2025 reforms added a timing rule. If the strata committee has authority to decide a minor renovation request and refuses it, it must give written reasons within three months of receiving the request. If it does not refuse within that period, the application is taken to be approved. The flip side: an incomplete or vague application is not a properly made request, so committees should not assume the clock starts on day one of every email exchange.

NSW schemes commonly have a by-law specifying minimum acoustic performance for hard floors. If your scheme does not, the application should still include an acoustic specification because the committee can reasonably require one as a condition of approval.

Records of approved minor renovations must be kept for 10 years.

Victoria

Under the Owners Corporations Act 2006, changes to floor coverings that affect common property or the use of another lot generally require owners corporation approval. The mechanism depends on the scheme's rules.

The Owners Corporations Regulations 2018 model rules and most custom rules deal with floor coverings under "noise" and "alterations". A typical Victorian rule will require the lot owner to ensure floor coverings prevent the transmission of noise that may disrupt the peaceful enjoyment of another lot. In practice this means hard floors need approval and an acoustic specification, while soft floor replacements are usually fine.

For Tier 1 schemes (over 100 lots, mandatory professional manager) and Tier 2 schemes, the application is normally lodged through the manager. For smaller tiers and self-managed schemes, the committee or general meeting decides directly. Either way, the rule the committee enforces is the rule registered against the plan, which is why owners should request a copy of the rules before they sign a flooring contract.

Queensland

The Body Corporate and Community Management Act 1997 and its module regulations (Standard, Accommodation, Commercial, Small Schemes, Specified Two-Lot) govern floor covering changes via the by-laws and the "improvements to common property" rules.

Most Queensland schemes have a by-law that requires owners to maintain floor coverings sufficient to prevent the transmission of noise likely to disturb the peaceful enjoyment of another occupier. The by-law often references an acoustic standard or requires an acoustic underlay specified by the body corporate or its consultant.

If the work touches common property — for example, removing tiles bonded to the structural slab, or affecting the bathroom membrane — committee approval alone is not enough. The work becomes an improvement to common property, which requires a body corporate resolution under the relevant module. Owners often miss this step and discover later that the body corporate cannot ratify the work after the fact without owner contribution agreements.

Western Australia

The Strata Titles Act 1985, as amended in 2018 and 2020, has clearer rules than its predecessor on alterations to lots and common property. Floor coverings inside a lot are generally a lot owner matter, but the scheme's by-laws (Schedule 1 governance and Schedule 2 conduct, plus any custom by-laws) will usually impose conditions for hard floors.

A common WA approach is a conduct by-law that requires owners not to use floor coverings that cause unreasonable noise, and a separate registered by-law that requires written consent for hard floor installations and prescribes a minimum acoustic performance.

Where the change affects common property — including penetrations through the slab for plumbing during a bathroom re-fit — section 87 and the common property scheme rules apply, and a special resolution may be required.

South Australia

The Strata Titles Act 1988 and the Community Titles Act 1996 (depending on whether your scheme is strata or community titled) deal with floor changes via by-laws and the scheme description.

South Australian by-laws often include a "noise" or "nuisance" by-law that owners breach if their floor coverings cause unreasonable disturbance to other occupiers. Some schemes add a more specific by-law requiring committee consent for hard floors and prescribing acoustic performance.

The practical approach in SA is the same as elsewhere: check the by-laws before scoping the work, ask the secretary for any registered alterations by-law, and submit an application that meets it. South Australian tribunals will look at whether the owner had the relevant approvals when a noise complaint comes in.

Tasmania

Under the Strata Titles Act 1998, alterations and additions are typically governed by a by-law and require body corporate consent where they affect common property or another lot's use.

Most Tasmanian schemes treat hard floor installations as alterations needing body corporate approval, with acoustic conditions imposed at the time of consent. Smaller schemes (often two and three lot strata) may not have a specific floor covering by-law, in which case the general rule against creating noise nuisance does the work.

Australian Capital Territory

The Unit Titles (Management) Act 2011 sets up the framework for owners corporations in the ACT. Changes to floor coverings inside a unit are usually a unit owner matter, but the rules of the owners corporation will typically include a "noise" rule and may include a specific rule requiring approval for hard floors.

Where the change affects common property — including the slab, the ceiling void below, or any building element shared with the unit below — the work usually needs to be authorised under a special privilege motion or a general meeting resolution depending on what is being done.

The ACT Civil and Administrative Tribunal is the forum for floor covering disputes that escalate.

Northern Territory

The Unit Title Schemes Act and the older Unit Titles Act govern strata in the NT, depending on whether the scheme is a "unit title scheme" or an older "unit titles" scheme. The default by-laws and any custom by-laws control floor covering changes, with the typical pattern being a noise by-law plus an alteration by-law that requires body corporate approval for hard floors.

The NT has fewer registered apartment schemes than the larger states, and the practical decision-making often happens at body corporate committee level with input from the manager where one exists.

Carpet vs hard floors at a glance

Work	Approval typically needed	Acoustic spec typically needed	Why
Replacing carpet with carpet	No	No	Cosmetic; no change in acoustic profile
Replacing underlay only	No	No	Cosmetic, provided no slab work
Carpet to vinyl plank, laminate, engineered, timber, tiles, stone	Yes	Yes	Hard floor, impact noise risk
Hard floor to different hard floor (like-for-like, e.g. timber to timber)	Usually yes	Usually yes	Acoustic system is rebuilt, must be re-specified
Wet area tile replacement (bathroom, laundry, kitchen splashback floors)	Yes	Sometimes	Waterproofing membrane is usually common property
Removing existing skirting and reinstating	Usually no	No	Cosmetic, provided no wall damage
Floor levelling or screed work	Yes	Yes	Affects slab acoustic performance and may be common property

This is a general guide. The specific by-laws of your scheme override this table.

What a good application looks like

Committees can decide hard floor applications faster when the application gives them everything they need at once. The pack should include:

The exact floor system being installed: substrate, underlay (with product name and thickness), adhesive (if any), and finished floor product.
Acoustic test report from an accredited laboratory, or a desktop acoustic assessment by an acoustic engineer, demonstrating the system meets the by-law performance and at least the NCC minimums (Rw + Ctr ≥ 50 and Ln,w ≤ 62).
Plans or marked-up floor plans showing which rooms are being changed.
Start and finish dates, and working hours that match the scheme's by-laws.
Contractor licence details and a current certificate of insurance.
Lift booking and protection plan, including waste removal.
For wet areas: waterproofing scope, licensed waterproofer details, and a Form 16 or equivalent certificate where required by state legislation.
Any proposed by-law (in NSW, a common property rights by-law if the work affects common property).

Owners who present this from the start usually get a decision in one committee cycle. Owners who send a one-line email saying "I'd like to install timber floors next month" usually get a request for more information and a delayed start.

The four most common post-install disputes

Impact noise complaint from below. The most common dispute in apartment buildings. Settled by the acoustic test result on the as-installed floor system, not the marketing brochure. If the application included a proper acoustic specification, the committee has a position. If it did not, the dispute can become expensive.

Wet area leak six months later. A bathroom tile change that does not properly reinstate the membrane causes a leak into the apartment below. The owner's insurer and the body corporate's insurer end up arguing about whether the work damaged common property.

Renovation without approval. Owner installs a hard floor without applying. Tribunal can order removal in some states, or impose conditions retrospectively in others. Either way, the resale value and the owner's relationship with the committee suffer.

Like-for-like assumption. Owner replaces existing timber with new timber, assumes no approval needed. The acoustic system underneath has changed, and the new system may be worse than the old. Most by-laws treat this as a fresh installation requiring fresh approval.

What committees should keep on file

Committees should retain, for at least 10 years (longer in some states):

The application itself.
The acoustic specification and any test reports.
The committee or general meeting decision approving the work, with conditions.
Any contractor insurance certificates and licence details.
For wet areas, the waterproofing certificates.
Any post-completion documentation, including a final acoustic test if required as a condition.

This record matters when a future buyer asks whether the timber floors were approved, when a downstairs owner reports noise five years later, or when the building's insurance asks about modifications.

What UnitBuddy tracks

UnitBuddy gives committees and owners a shared place to record floor covering applications by lot, with the application pack, the acoustic specification, the approval decision, the conditions imposed, the contractor details and the post-install certificates all in one record. It also keeps a history of every renovation that has ever been approved for a lot, which becomes part of the building's institutional memory.

That memory is the point. Committee members rotate, managers change, owners sell. The building keeps the record. When the new owner of the apartment below asks why the timber floor in the lot above is louder than they expected, the committee can pull up the original acoustic report, the approval and the conditions in seconds. The conversation moves from "we don't know" to "here is what was approved and what was required".

Changing Floor Coverings in Strata: A State-by-State Guide for 2026