How much will my window replacement cost?

Quick and easy window replacement cost guide

Replacing your windows could be the next step in making your house feel like a home. New, modern windows don’t just look great, they also help keep your home warmer, quieter, and more energy efficient, saving you money on heating bills.

We'll cover the following topics in this cost guide:

1. Average cost of window replacement
2. Hourly rate of window replacement labour
3. Different window types and their costs
4. Beware of these hidden window replacement costs
5. Tips to save money on your new windows
6. Find window replacement near you on MyBuilder
7. FAQs common questions

Average cost of window replacement

When you’re planning your new windows, it’s important to understand the many factors that impact costs. The type of windows, materials, installation complexity, and extras you choose all play a big role in the final price.

In the UK in 2025, window replacement costs typically range from £160 to £1,860 per window, depending largely on the material and style you go for.

On average, you can expect to pay between £4,000 and £7,000 for a full house’s windows, though this varies with home size and window choice. Key factors influencing window replacement costs include:

• Frame Material: uPVC is budget-friendly, timber and composite are more expensive. Window Style and Size: Complex designs like bay or sash windows, or larger sizes, cost more.
• Glazing Type: Triple glazing or special glass options increase the price. Installation Complexity: Removing old frames, needing scaffolding, or difficult access raise labor costs.
• Labour Rates: These vary by region and installer expertise.

To get the best price possible for your roofing project, just post your job on MyBuilder then connect with multiple verified contractors in your area. You can then discuss the job, get advice, request quotes etc.

Hourly rate of window replacement labour

When you are budgeting for window replacement, it’s important to factor in labour and window fitting costs, which can have a significant impact on your final budget.

In the UK for 2025, typical installation costs range from about £100 to £300 per window, depending on the difficulty of the job and location the professional window installer needs to reach.

Larger or more complex projects can increase costs, including:

• The need for scaffolding to access higher or difficult areas

• Structural work required to fit new windows properly

• Removal and disposal of old window frames

Different window types and their costs

When considering window replacements, understanding the different types of window available is so important.

Each type comes with its distinct set of characteristics and costs, helping homeowners make informed decisions based on their budget and style preferences.

Below is a cost breakdown for various replacement window types:

Window Type	Cost
Casement	£250 - £600
Sash	£400 - £900
Bay Window	£1,200 - £2,500

Standard replacement windows provide an affordable and practical option for upgrading your home, with prices ranging from £160 for basic models to £1,500 for larger sizes or premium finishes.

Custom windows, designed to meet unique architectural needs and personal preferences, usually start at around £700 and can exceed £2,000, offering added style.

Beware of these hidden window replacement costs

When you are replacing your windows, be aware of potential extra costs beyond basic materials and installation:

Custom fittings: Special sizes or unique designs often cost more due to custom manufacturing.

Remote locations: Difficult access or far-away sites may increase labour and transport fees.

Structural modifications: Changes to frames or walls, such as adding support or enlarging openings, add complexity and cost.

Scaffolding: High or awkwardly placed windows may require scaffolding, which is an additional expense. Find out about scaffolding costs here.

MyBuilder Tip: Before starting, check if your project needs planning permission or must comply with specific building rules to avoid delays and unexpected costs. It’s easy to get in touch with window specialists near you on MyBuilder, just post your job today.

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Tips to save money on window replacement

Replacing your windows is an important investment, but there are smart ways to save money without sacrificing quality.

Here are some practical tips to help reduce your window replacement costs:

• Choose standard-sized windows when possible, as they tend to be cheaper than - Consider cost-effective materials like uPVC, which offer good energy efficiency at a lower price than timber or aluminium.
• Combine multiple window replacements in one project to potentially get discounts on labour and materials.
• Schedule your replacement during off-peak times to take advantage of better deals.
• If your existing window frames are still in good shape, replacing just the glass might be a more affordable option.

MyBuilder Tip: Regular cleaning and maintenance can help extend your windows’ lifespan, delaying replacement and saving you money in the long term. Take a look at this window cleaning cost guide for more!

Find window replacement near you on MyBuilder

Are your old windows in need of replacement? Just post your job on MyBuilder today! It’s the quick and easy way to connect with local window fitters, compare options, read customer reviews, and hire the right professional for your window replacement project with confidence.

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FAQs common questions about window replacement

Do I need to hire a professional for window replacement?

While DIY is possible, professional installation is highly recommended to ensure proper fitting, insulation, and to maintain warranties.

How long does the window replacement process take?

Installation for a typical window usually takes a few hours, but a full house replacement can span several days depending on the number of windows and complexity.

Will my home require planning permission for replacement windows?

In most cases, replacing windows like-for-like does not require planning permission, but if you're changing the size, style, or materials, you should check local regulations.

What warranty can I expect on new windows?

Most manufacturers offer a 10-20 year warranty on windows and glass, and professional installers usually provide a 2-year installation warranty for peace of mind.