Window, door & balcony installation

Window, door and balcony installation in Singapore

Updated 4 November 2026

Window, door and balcony installation in Singapore costs about S$600 per casement opening and about S$1,200 per sliding opening, approximately, according to sellers' websites, November 2026. Quotes are given per job, so the final figure depends on size and product. The quickest way to current prices is to send a request on BlaBlaPrice.

What the price depends on

These figures are starting points for one opening. Installers ask for the following before they quote:

• the work needed and how many windows, doors or balconies
• the dimensions of each opening, in millimetres
• the product specification, such as glass and frame type
• who supplies the products, you or the installer
• extra work, such as removing old frames
• the site address, your deadline and your budget

HDB flats need a permit and an approved installer

Replacing windows in an HDB flat needs a renovation permit from HDB before work starts. The HDB guidelines for window works also require an installer who is a BCA Approved Window Contractor listed by HDB. Ask for the installer's listing and the permit details before you pay any deposit. After the installation is complete, a safety report is filed, so keep a copy with your home papers.

Season and weather

Singapore has no winter. It is hot all year, with a wet season and a dry season instead, so cold does not hold work back. Rain can still slow sealing and balcony work, so ask how open walls and frames will be protected during the wetter months.

How the work is measured and bought

Installers measure on site and quote per opening or per job, using millimetre dimensions. Jobs are taken across the island, from Tampines and Woodlands to Jurong West and Ang Mo Kio, so name your area in the request so the installer can plan the visit. Ask for a written quote that lists each opening, the products and the warranty.

What to write in your request

Describe the work in your own words: the number of windows, doors or balconies, their dimensions, and whether you want new glass, a new frame or both. Say who supplies the products, whether extra work is needed, and give the site address, deadline and budget. A photo of each opening helps sellers judge the job.

On BlaBlaPrice the request is free for buyers. You describe the job in the chat, and the AI asks for anything missing and looks through local sellers' websites and price lists. Registered sellers reply in the chat with their own price, terms and delivery. Your contact details stay hidden until you choose to exchange them, and you can also send the request link to installers you already know. See related work in Construction & renovation or Finishing work.