House Extensions

Extend your Northamptonshire Home

House Extensions

T&K has a range of bespoke house extensions available to homeowners in Wellingborough, Rushden, Corby, Olney, Banbury, Milton Keynes and throughout Northamptonshire. For house extension prices, use our online quoting engine today.

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Key Features


Save on Energy Bills and reduce your carbon footprint


Police Approved Security

Multi directional locking systems - Secure by design locking systems as standard


Noise Reduction

Reducing external noise by up to 86%. Our products are perfect for reducing unwanted external noise


Comfortably Warm Home Extensions

We all want a bit of consistency in our life, and the same goes for our house extensions. With a range of thermally efficient features, such as double glazing and a thermally broken profile, you’ll be able to enjoy a comfortable home extension 365 days of the year.

Whether you’re looking to entertain guests using your house extension or retain it purely for personal use, you’ll be consistently met with the right temperature as you enter. You also won’t need to worry about excessively highly monthly bills during winter.

Hassle Free House Extensions

The installation of your house extension is just the start of your home improvements journey. Incredibly durable in design and construction, our home extensions will provide decades of longevity, bringing enjoyment and style long after fitting.

However, in all that time, you won’t have to spend hours keeping your house extensions looking their absolute best. Modern materials such as uPVC are incredibly easy to clean. As a result, you’ll be able to enjoy your home extensions with no stress or hassle, just satisfaction.

Complete Design Freedom

When you choose T&K for your new house extension, you ensure that it will be totally individual to you. You have complete freedom regarding the design of your new space, with our made to measure manufacturing process fulfilling the design you have chosen. You can recreate a traditional style or go for a far more modern aesthetic; the choice is yours.

To make things easier for you, you can base your house extension design on an existing style such as an orangery or Victorian style conservatory. Or, if you prefer, you can design your own space from scratch. There is a plethora of window and door colour options as well, to add the distinctive finishing touches to your home.

glass extension house

Designed for You

We will design our house extension to suit your exact specifications. Whether you base your design on an existing example or create a brand new one, you’ll have complete freedom.


Roofing Options

When it comes to roofing options, you have several choices. Tiled roofs will ensure a uniform look across your home and house extension, while glass roofs and roof lanterns allow for more natural light.


Consistent Home Comfort

Excellent thermal efficiency ensures that you can use your house extension all year round. With our range, you can say goodbye to freezing winters and boiling summers.


Hassle Free Maintenance

Don’t worry about having to spend all your free time cleaning and maintaining your house extensions. They’re designed for a hassle free performance, bringing joy, not stress, into your life.


Window Options

Double glazed windows with a range of opening configurations can allow you to easily ventilate your house extension throughout the summer months, keeping you cool and refreshed.


Door Options

Select from a range of external doors, including French, patio and bifold in a range of materials. We have options for every house extension budget tailored to your vision.

House Extension

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Northamptonshire's Home Improvement Experts

Why Choose T&K for House Extensions?

T&K are local uPVC, aluminium and timber specialists based in Wellingborough. Having been operating continually for over 40 years, we are experts in the home improvements industry. Our experienced team of installers strive to deliver complete, professional and respectful fittings. We are renowned for our excellent customer service and the high quality of our products.

We have managed to transform thousands of properties in the time we’ve been operating. After more than 65,000 installations, we have the experience and quality you need for your home. Don’t just take our word for it. You can have a look at our testimonials to see what other customers have said about our work or take a look at our list of accreditations.

Established in a small garage in 1979, T&K Home Improvements have grown to become one of the most reputable installers of Windows, Doors and Conservatories in Northamptonshire and the surrounding counties. With over 60,000 satisfied homeowner installations and four decades of experience, we put the customer at the heart of everything we do. T&K deliver a first-class service every time.
T&K have multiple awards to their name, including most recently winners of the GGP Installer Awards 2020 for Best Installation under £35,000. In addition, we have won many other GGP Installer awards, C&O Awards, Business of the Year Awards, as well as multiple other glass and glazing accolades.
To ensure you keep safe and secure in your home, T&K's home improvements and installation services come fully accredited from leading industry bodies, including Made In Great Britain, Which?, Secured by Design, BSI Kitemarks and BFRC (British Fenestration Rating Council), and the DGCOS.
Here at T&K, we come highly recommended. But don't just take our word for it. We are proud to say that 99% of our customers recommend us on Which? Trusted Trader. Plus, T&K have been proud holders of the Certificate of Distinction for two years in a row, the highest customer service award from Which. When you choose T&K, you're choosing home improvements and a service you can trust.
All of our home improvements installed by our expert, experienced installation team come with a full 10 Year Insurance backed guarantee from the DGCOS. This provides you total peace of mind by benefitting from our specialist After Sales service for many years to come.

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More Information

roof lantern

Roof Options

We have three distinct roof options available for your house extension. Tiled roofs offer your home the best privacy levels and can look great if your home has a tiled roof. Roof lanterns and glazed roofs allow exceptional levels of light to enter your home.

Wooden Lean To Conservatory

Colour Options

There are a massive range of colours to choose from for your window and doors fitted into your new house extension. Depending on your personal tastes, you may opt for one of our more subtle shades or a more vibrant tone.

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Window & Door Choices

Customise the intricate details of your house extensions with T&K. Select from uPVC, or aluminium windows and patio, bifold or panel doors. All of our door options provide superb external views out your new house extension.

ultra glass image

Ultra Glass

Helping you to accomplish exactly the conservatory you have in mind, we offer a range of conservatory glazing options. These are an integral finishing touch that will help determine the overall look, and performance of your conservatory.

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Double Glazing Reviews T&K


Happy Customers

We were more than happy with all aspects of our conservatory installation, right from Shaun the salesman to the guys on the final visit. All the work went through like clockwork, and we were very happy with the end result. Everyone was so helpful and friendly.
Keith Green
The only time we did not use T&K (it was for two windows and one door) we were so disappointed in the products, we had them taken out and replaced by T&K. All our windows and doors have now been done twice by T&K, and we would never even look at anyone else.
Elizabeth Pridmore
We have used T&K for a new door and complete window installation. From the survey stage, receiving a quotation and final installation, the processes were all straight forward and of course we are more than pleased with the quality of the product and just as important the workmanship and politeness of the fitters. Would not hesitate to recommend T&K to family and friends.
Paul Curtis
My wife and I had windows installed some 15 years ago from T&K and they look as good today as when they were first installed, so much so that we recently had our front, back and two French doors installed. We could not be happier with the results.
Richard Simmons
The T&K team were amazing from start to finish. Professional and punctual from the moment of engagement, quotation, surveying, installation and post-installation service. Extremely friendly and high quality team and our windows and doors were definitely worth the investment. Thanks for your efforts. We wouldn’t hesitate to recommend T&K!
Rachel Phillips
I have used T&K on three separate properties now and they have been great. Cost and product as well as installation as promised. Better still your energy cost nose dive in the winter. Highly recommend!
Philippa Sharp
I am so pleased with our recent installation from T&K that I felt compelled to leave this review. Shaun was respectful and patient in dealing with our request and everything that he promised T&K delivered. We received quotes from four other companies, and I am so happy we chose to go with T&K.
Paul-David Symeou
T&K installed a new door for us the whole service has been outstanding from the visit to the showroom to the day of the installation. All members of the team outstanding could not have asked for more. Highly recommend this company.
Steve Raher
Everyone from the initial sales consultant Steve, to the surveyor, builders, plumbers, electrician, planners and installers were exceptionally professional. I would definitely recommend T&K home improvements to family and friends.
Jonathan Lingard
Have used T&K for Windows etc on three properties. Delighted with quality, installation and after sales service. Have just ordered a conservatory from them!
Michael Hulands
Home Improvements Northampton

Instant Online Prices

House Extension Prices, Wellingborough & Northamptonshire

Start your house extension quote online today with T&K, or book a showroom consultation with us instead.

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© 2024 T&K Home Improvements | Registered No. 02172185 | VAT Number: 576468196 - Registered in England and Wales – FRN 794188

T&K Home Improvements Limited of 2-6 Huxley Close, Park Farm South, Wellingborough, NN8 6AB act as a credit broker and not the lender. Credit is provided by Novuna Personal Finance, a division authorised and regulated by the Financial Conduct Authority. Credit is subject to application and status. Terms & conditions apply.

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