How Much Do Aluminium Windows Cost in London? 2026 Price Guide

One of the first questions we're asked by homeowners across London is simple: "What will this actually cost me?" While every quote depends on your specific property, here's a realistic guide to help you budget for aluminium windows in 2026.

Average Aluminium Window Prices

As a rough guide, based on standard installations across London and Essex:

• Small single window (casement): typically the entry point for aluminium glazing

• Medium/standard window: a moderate step up from uPVC equivalents

• Large picture or feature window: priced higher due to glass area and frame engineering

• Bifold or sliding door units: the biggest investment, but often the most transformative for open-plan living spaces

  
  

Exact pricing depends on size, glazing specification (double vs triple glazed), colour finish, and installation complexity — particularly for London properties with access restrictions, period features, or listed building requirements.

What Affects Your Final Price?

1. Frame colour and finish Standard colours (white, grey, black) are usually the most cost-effective. Bespoke RAL colours or dual-colour finishes (different colour inside vs outside) add to the cost.

2. Glazing specification Standard double glazing is the baseline. Acoustic glass (useful for busy London roads), solar control glass, or triple glazing will increase the price but improve performance.

3. Number of openings and hardware Fixed panes are the most economical. Opening casements, especially with multi-point locking or specific handle styles, add cost.

4. Installation access Ground floor installations are typically more straightforward than upper floors or properties with restricted access — common in terraced London streets.

5. Building regulations and planning Listed buildings or conservation areas across boroughs like Richmond, Islington, or Greenwich may require specific specifications, which can affect pricing.

Aluminium vs uPVC: Cost Comparison

Aluminium typically costs more per window than uPVC upfront. However, many homeowners find the difference worthwhile for the slimmer sightlines, modern appearance, and long-term durability aluminium offers — particularly on larger openings like bifold and sliding doors, where aluminium's strength allows for bigger panes with less frame.

How to Get an Accurate Quote

The only way to get a truly accurate price is a site visit or detailed conversation about your property, as every job varies. We provide free, no-obligation quotes for homeowners across London and Essex, with transparent pricing and no pressure.

Request your free, no-obligation quote — call 020 8550 2929 or [get a quote here].