uPVC casement windows are the most popular choice for UK homeowners. They are durable, energy-efficient, and relatively inexpensive to manufacture. Yet, when a double glazing salesperson sits in your living room, they will often quote you a price that suggests these windows are made of solid gold.
The double glazing direct sales industry relies on keeping the true cost of uPVC windows a secret. They use a "sliding scale" commission model, starting with a massive "book price" and slowly dropping it to make you feel like you are winning a negotiation.
At ReQuotes, our team of ex-industry insiders is breaking the silence. We know exactly what these windows cost to make and fit. Here is the real price you should be paying in 2026.
The Real Price of a uPVC Window in 2026
The only number that matters is the Floor Price. This is the absolute minimum the company will accept for the job while still making a healthy profit. Everything above the floor price goes directly into the salesperson's commission and the company's excess margin.
For a standard uPVC casement window (e.g., a kitchen window) in White or Anthracite Grey outside and white inside, average size 120cm wide × 100cm high, with 2 opening sections, A-rated energy efficiency, and a minimum 10-year guarantee — fully installed and including VAT, you should expect to pay £320 to £400.
If a salesperson quotes you £1,200 for that window and then "generously" drops the price to £800 if you sign today, they are still overcharging you by at least £400 per window. Multiply that by 10 windows for a full house, and you are overpaying by £4,000.
Want to know the exact bottom line price for your specific windows and property? Use the Bottom Line Price Checker to get a personalised figure before any salesperson sets foot in your home.
Full House Replacement — Floor Price Ranges
To give you a clearer picture of what a full house replacement should cost, here are the 2026 floor price ranges based on property type. These figures assume standard uPVC casement windows.
| Property Type | Typical Windows | Floor Price Range (2026) |
|---|---|---|
| Terraced House | 4–6 windows | £1,800–£2,200 |
| Semi-Detached (slightly larger windows, more openers) | 7–9 windows | £3,200–£3,800 |
| Detached House (larger windows, more openers) | 10–14 windows | £5,500–£6,500 |
Note: Adding composite doors, French doors, or bi-fold doors will increase the total accordingly.
National Company Quality at Local Company Prices
Here is the counterintuitive truth that the industry doesn't want you to know: the big national companies (like Anglian and Everest) actually do manufacture superior products. They extrude their own uPVC, build their own frames in UK factories, and control the quality end-to-end.
The problem is not their product. The problem is their sales model. Their salespeople will try to charge you a massive premium for that quality.
But the floor price of a national company is not dramatically higher than a local firm's price. When ReQuotes users negotiate to the floor, they get national company quality at local company prices. That is exactly what our service is designed to achieve.
What Affects the Price of a uPVC Window?
The price of a uPVC window is determined by three main factors:
- Size: Larger windows require more uPVC profile and more glass, increasing the cost.
- Number of Openers: Every opening section (casement) requires additional hinges, locks, handles, and reinforced profile. A window with two openers will cost more than a window of the same size with only one opener.
- Design and Finish: Standard white uPVC is the most cost-effective. Coloured foils (like Anthracite Grey or Chartwell Green) or woodgrain effects add a small premium to the manufacturing cost.
How to Get the Floor Price
Never accept the first price, and never sign a contract on the night of the quote. The "tonight only" discount is a high-pressure tactic designed to stop you from researching the real price.
Instead, get your quote, thank the salesperson, and tell them you need to think about it. Then, run their quote through the ReQuotes Bottom Line Price Checker. We will tell you instantly if you are being overcharged, and our team of ex-industry experts will negotiate the price down to the floor on your behalf — completely free of charge.
The ReQuotes 3-Part Free Service
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