Modern house extensions are a great way to extend your Harpenden home. Whether you want a new living room or kitchen extension, we can tailor our extensions to meet your needs. Enjoy your brand-new and contemporary social space throughout the year. Design your dream home with our excellent collection of modern house extensions.

Not only are our modern house extensions beautifully designed, but they also provide many practical benefits. From thermal efficiency to advanced security, our products offer unrivalled performance for your Harpenden home.

Here at Aspire Extensions, we want to build a space that you will use out of all-year-round. Our team of specialists are here to support you from quotation to installation. Start your home improvements journey today, and get your free zero-obligation quote.

A Sleek Living Space


Even in the most extreme weather, our modern house extensions will keep your Harpenden home secure. Our robust profiles and double glazing prevent unwelcome draughts and water ingress. Enjoy your home, knowing that our installations will protect your property.

Bespoke Design

You can customise modern house extensions to match your home’s aesthetics whilst adding a chic and contemporary style. We have an eclectic range of windows, doors and hardware accessories for the perfect finishing touch. Design your dream home today.

Thermal Efficiency

Our modern house extensions excel in thermal efficiency due to the high-quality double glazing and insulated framework. You can rely less on using your heating and save money on your energy bills. Throughout the year, your new space will treat you with continual heat retention.


We understand that security is a big priority to Harpenden homeowners. All our doors and windows are fitted with industry-leading locking systems, including multi-point locks. Each has thorough testing to ensure that they will provide you with maximum security.

Low Maintenance

When you choose our modern house extensions, you do not have to worry about its upkeep. The advanced technologies used to build them means that in the long run, they require little maintenance. A wipe with a damp cloth is sufficient enough.

Double Glazing

The double glazing that we fit into our range of windows and doors give our modern house extensions excellent thermal performance. The two glass panes trap the warm air and keep it in your home, preventing any draughts from entering your property.

Beautiful Aesthetics

We have several design options for you to pick from when choosing your modern house extension. From uPVC to aluminium profiles, you can choose your windows and doors to meet your property specifications. Each of our windows and doors has brilliant practical benefits and can be designed to have a chic and stunning aesthetic.

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Improved Insulation

The combination of our super-insulated framework, profiles and double glazing will keep your Harpenden home warm throughout the year. You can enjoy your property without feeling too hot or too cold due to temperature regulation. Our installations can achieve an excellent energy rating which will improve the energy efficiency of your home.

Modern House Extensions Harpenden


With over 30 years of experience, we are experts in home improvement projects. We understand how to create an extension which will provide a safe and secure environment. Our high-quality locks are tested to make sure that they meet the latest industry standards. The glass we fit is also internally beaded, so it cannot be removed from the outside.

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Modern House Extension Prices Harpenden

Choose from our collection of modern house extensions and enhance your Harpenden home. Your modern sanctuary will be a stunning centrepiece for your property. Get your free quote today using our online quoting engine. All you need to do is choose your preferred design and your house dimensions. We will provide you with a bespoke zero-obligation estimate.

Alternatively, you can get in touch with us through our online contact form. A member of our friendly team will answer any questions that you have on our modern house extensions. If you prefer to speak to someone directly, you can give us a ring on 01908 921197. Our team of experts will offer you our advice on your home improvements project.

Modern House Extension Harpenden Prices

We offer modern house extensions for competitive, reasonable prices. Get in touch today to find out more!

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