Window, door & balcony installation

Window, door and balcony installation in New Zealand

Updated 4 November 2026

In Auckland, a double-glazed window typically costs NZ$1,500–3,500 installed, and a 3 m sliding door NZ$3,500–5,000 or more. Prices differ between cities and frame types, so the quickest way to current figures is a request on BlaBlaPrice.

Rules to check before work starts

Building consent is usually not required for work on a window or exterior doorway in an existing home, and the exemption for these in existing dwellings covers most replacements. Replacing a window in an existing opening is the usual case, so ask your installer to confirm your job fits it. Upgrades in older houses can be more complex, so ask how the existing frame will be checked.

Season and timing

Summer runs from December to February and winter from June to August. Plan the fitting to finish before June, so the new seal is in place before the cold months. Asking for offers now, in early summer, gives you time to schedule the work before winter.

How windows are priced and supplied

Quotes are given per window, per door or per square metre. One Auckland guide puts installed work at NZ$400–800 per square metre, and standard double-glazed aluminium windows at NZ$800–1,500 per square metre, so measure in millimetres and square metres. Some suppliers quote from NZ$5,000 per unit for a sliding door, so ask whether the price includes the frame, glass, removal of the old window and disposal.

What to put in your request

List how many windows or doors you need, each size in millimetres, the frame material such as aluminium or timber, and whether the old frame must be removed. Say whether the installer should supply the windows or you have already chosen them. Add your city (Auckland, Wellington, Christchurch, Hamilton or Tauranga), the site address, your deadline and your budget.

Describe the job in your own words in a chat on BlaBlaPrice, and add a photo if you have one. The service is free for buyers. The AI asks for missing details, looks through sellers' websites and price lists in New Zealand, and shows the prices and businesses it finds. Registered sellers receive your request and reply in the chat with their own price and terms. Your contact details stay hidden, and you choose whom to share them with. You can also invite a local installer yourself by sending them your request link. Start with a request on BlaBlaPrice or read how BlaBlaPrice works.