Window, door & balcony installation

Window, door & balcony installation in Hong Kong

Updated 4 November 2026

In Hong Kong, replacing an aluminium window usually costs HK$1,000 to HK$3,000 per unit, and aluminium sliding doors are listed from about HK$4,800. Larger glass panels and window walls cost significantly more. For a price that fits your opening, describe it in a request on BlaBlaPrice.

These figures are approximate, according to sellers' websites, November 2026. One listing showed both HK$4,800 and HK$18,000, so compare installed prices rather than listings.

Local rules and what to check

Alteration and addition works in Hong Kong fall under the Building (Planning) Regulations (Cap. 123F), which set window requirements for rooms used for habitation, such as a prescribed window facing directly into the external air. Official guidance advises owners to consult a Building Professional before starting A&A works, so ask your installer who will confirm the job is allowed. Windows fitted to balconies of public rental flats must also keep natural sunlight and air ventilation adequate inside the flat.

Season and timing

Hong Kong has winter from December to February and summer from June to August, so November sits between the two. That makes it a sensible month to book, before the colder months. Ask for a fixed date and a short time window, since the old frame must come out before the new one goes in.

How the work is quoted and delivered

Window prices are quoted per unit, and installation can be a separate line from the product, as the small fitting and glass items show. Ask whether the figure includes removing the old frame, the glass, sealing and disposal. Give the district as well as the city (Central, Kowloon, Sha Tin, Tsuen Wan or Tuen Mun), because access in older buildings can change how long the job takes. Give sizes in millimetres.

What to put in your request

Say how many windows, doors or balcony openings need work, and give the width and height of each in millimetres. Name the product you want, such as aluminium or a sliding balcony door, and say whether the seller supplies the product or only fits yours. Add any extra work, the site address, your deadline and budget. A photo of each opening helps a seller judge the job before quoting.

On BlaBlaPrice the request is free for buyers. You describe the job in your own words in a chat, and the AI asks for missing details, looks through sellers' websites and price lists in Hong Kong, and shows the prices and businesses it finds. Registered sellers receive the request and answer in the chat with their own price, terms and delivery. Your contact details stay hidden until you choose whom to exchange them with. For related work, see finishing work or turnkey renovation.