Sydney apartment window guide
Apartment Window Replacement in Sydney: Approval, Access and Quotes
Replacing apartment windows involves more than choosing a frame and glass. Confirm the strata approval path, measure each opening, define access and compare every quote against the same written scope.
Quick answer
You can arrange a preliminary measure and indicative quote while approval is being investigated. Before paying a deposit or starting manufacture, confirm who can approve the work, what appearance requirements apply and whether the proposed scope needs any separate planning approval.
Confirm the approval path before you order
Custom aluminium windows are manufactured for measured openings. If the building later requires a different frame colour, profile or glass appearance, an ordered unit may no longer match the approved specification.
Preliminary measurement and an indicative quote can help define the proposal. The approval position should be clear before a deposit commits the project or manufacture begins.
Ask the strata manager or committee secretary what approval process and documents are required.
Confirm the accepted frame colour, profile, glass appearance and any external design requirements.
Earlier approvals may help identify a suitable specification, but they do not replace approval for your work.
Repairing an existing window and changing its specification can follow different approval paths. NSW guidance lists installing or replacing double- or triple-glazed windows as minor renovations when the work does not change the outside or structure of the property. Your scheme can also have its own by-laws, so check before ordering. See the NSW strata renovation rules and our practical comparison of double and single glazing in Sydney.
Who is responsible for strata windows in NSW?
NSW Government guidance lists windows and window locks among items that the owners corporation repairs in most cases. That does not settle every building. Responsibility can depend on the registered strata plan, by-laws and alterations made after the scheme was registered.
Check the building’s documents and ask the strata manager before arranging work or assuming who will pay. The NSW Government’s strata repairs and maintenance guidance explains the general division between lot property and common property.
Does window replacement need planning approval?
Do not assume that a complete window replacement is exempt development. The NSW Planning Portal says some window repairs can qualify as exempt development when every applicable development standard is met. Replacement work, changes to external appearance, heritage controls and other site conditions may require a different approval path.
Check the NSW exempt development guidance, then confirm the position for the property with the local council or a qualified certifier. Owners corporation approval is separate from planning approval.
Measure the opening and define access
Photos and rough dimensions are useful for an early discussion, but they are not final manufacturing measurements. A site measure can reveal the sill condition, frame junctions, wall construction and finishing details that may not be clear in a photograph.
Why identical floor plans may need different scopes
Some windows may be original while others were replaced previously. Orientation, exposure, sill construction and internal finishes can also vary. Record each opening separately instead of multiplying one assumed specification by the number of windows.
What to confirm about access
Ask what access method the quote assumes and what it includes. Depending on the building, the scope may need to address internal access, common-area protection, lift bookings, loading, parking, resident notice and permitted working hours. Any specialist access arrangement should be confirmed after a site assessment.
Check the window safety-device scope
NSW strata rules require safety locks on certain openable windows when the lowest part is within 1.7 metres of the internal floor and that floor is at least 2 metres above the ground outside. The device must limit the opening to less than 12.5 centimetres.
Replacement work can affect an existing device. Ask the owners corporation what is installed and require the quote to state whether a device will be retained, reinstated, supplied or excluded. Use the current NSW strata window-safety guidance and confirm the building-specific position with the strata manager.
When does an owners corporation need two quotes?
NSW Government guidance states that all schemes must obtain at least two independent quotes for owners corporation work valued at $30,000 or more. Emergency repairs are excepted. Threshold wording and requirements can change, so confirm the current rule before relying on it.
Keep the comparison useful: ask each supplier to price the same written scope. Quotes based on different glass, access, removal or finishing assumptions cannot be compared reliably. This requirement concerns owners corporation expenditure; it does not automatically apply to privately funded work by an individual lot owner.
What should an apartment window quote include?
Compare the complete scope, not only the total. A clear quote should identify the following items or state when they are excluded.
| The quote should state | Why it matters |
|---|---|
| Measured schedule for each opening | Confirms that dimensions and configurations are not being assumed. |
| Frame system, colour and finish | Allows the proposal to be checked against the building’s requirements. |
| Glass type and thickness per opening | Identifies the glass being priced instead of using a generic description. |
| Hardware, locks and flyscreens | Confirms which operating and screening items are included or excluded. |
| Window safety-device treatment | Records whether an existing device is retained, reinstated or replaced. |
| Assumed access method | Shows the site conditions and access arrangements included in the total. |
| Removal and disposal | Confirms who is responsible for the existing frames, glass and waste. |
| Sealing, trims and making good | Defines the expected internal and external finish around the opening. |
| Lead time, GST, terms and exclusions | Makes the timing, total cost and scope boundaries easier to compare. |
Review our aluminium window styles and configurations, custom glass options and guide to window replacement quote factors before finalising the specification.
What should you send for an initial quote?
- Building address and apartment level
- Number and approximate size of openings
- Clear inside photos and safe external photos
- Existing frame material, if known
- Current approval status
- Known building or access restrictions
- Whether you are the lot owner or represent the owners corporation
- Any approved colour, profile or appearance requirements
Apartment window replacement FAQs
What is the first step before replacing an apartment window in Sydney?
Ask the strata manager or committee secretary what approval process applies and what documents or appearance requirements are needed. A preliminary measure and indicative quote can help define the proposal, but do not order or start manufacture until the approval position is clear.
Who is responsible for windows in a NSW strata scheme?
NSW guidance lists windows and window locks as owners corporation items in most cases, but the registered strata plan, by-laws and later alterations can change the position. Confirm responsibility with the strata manager before arranging work or assuming who will pay.
How many quotes are needed for owners corporation window work?
Current NSW Government guidance says all schemes need at least two independent quotes for owners corporation work valued at $30,000 or more, with an exception for emergency repairs. Confirm the current threshold and process before relying on it.
Why can apartment window quotes have different totals?
Quotes can cover different frame systems, glass, hardware, access, removal, disposal, sealing and finishing. Compare each written inclusion and exclusion before comparing the totals.
Can residents remain in the building while windows are replaced?
It may be possible, depending on the number of openings, access method, building rules, weather and the contractor’s installation plan. Resident notice, working hours and how openings will be kept secure and weather-resistant should be agreed before work starts.
Get a quote based on the actual apartment opening
Prime Aluminium Solution supplies and installs custom aluminium windows, doors and glass across Sydney, including apartment projects subject to onsite access and scope assessment. Send approximate measurements, photos and any strata requirements, or arrange a free onsite measure and quote.