Extensions cornwall

Create Extra Space with Single Storey Extensions

We supply and install top quality Extensions in Cornwall, using Durabase modular bases. Over 20 years experience creating beautiful, thermally efficient, extensions in Cornwall.

  • Durabase modular extensions
  • 40year guarantee
  • Insurance backed
  • Thermally efficient
Durabase Conservatory, conservatories cornwall, conservatory design

A Fast & Clean Extension Build

Need some extra space for a growing family, or maybe you want a dining area that opens out onto a patio or decking? We offer a stress-free way of creating that extra space that you need. Using modern building methods that are fast, clean & thermally efficient to build extensions in Cornwall.

Orangery roof skylights GRP finish

Modern Extensions

The modern way to extend your home is with a flat roof (GRP Warm Roof) extension. When we build warm roof extensions in cornwall we choose the Ultrasky flat skylight which features a frameless contemporary design that will flood the room with natural light. Couple this with bifold or sliding patio doors and you create a lovely bright living space.

LivinRoof 2020

Contemporary Style Extensions

A Livinroof build has all the benefits of solid conservatory roofs and glass conservatory roofs. The Livinroof Extension in Cornwall allows glazing to be added in any configuration and in any shape, best of both worlds! Achieving the build you want is easy with this flexible system that can be used to create a focal point in your new room that will help it stand out.

Ultraroof grey tile conservatory

Classic Style Extensions

Ultraroof is our favorite! It is the ultimate extension in Cornwall with the thermal properties of brick or super-insulated columns (depending on your choice) and the ultimate in lightweight tiled roof solutions.
Due to the strength of the Ultraroof beautiful vaulted ceilings can be created without the need for a tiebar.

Durabase Red Brick Example

Durabase Modern Builds

Building an Extension in Cornwall can be a messy experience, digging footings creating a mess in the garden, and on the drive. Older methods of base building are often messy and take a considerable amount of time. With Durabase there is very little mess, no waste to get rid of and the build is extremely quick. A complete base with walls and frames can be fitted in only two days.

durabase logo

Fast, Clean, Efficient

Older methods of extension building seem to be falling out of favor, largely due to the mess involved & the time that conventional builds take to erect. This is one of the reasons why we recommend a modular extension built using the Durabase and Ultraframe combination. Imagine a hassle-free option of building your dream living space! Everybody lives a busy lifestyle these days so any lengthy interruption to their daily life that a full construction project will inevitably bring is not good. With an Ultraframe and Durabase build, disruption is minimal, largely due to the ‘easy install’ nature of a modular build, therefore, time spent on site-building is much less.

Top Quality Products

The combination of the Ultraframe / Durabase product is easier to deliver and as an added bonus comes with many parts pre-installed which saves time cutting, measuring, and drilling on-site. The product is Pre-built in Ultraframes manufacturing facilities, the materials are all carefully chosen to suit your home. When designing a build they consider factors such as property types, property location, and snow load are all taken into consideration. The whole build is tailored to suit you and your home. Durabase and Ultraframe are the best products for any modular built extension and can be used for builds where access is a problem.

y showroom


You can take a virtual tour of the different style Extensions we supply and install throughout Cornwall and Devon. Once you have found the build that suits you, use the contact form to get a free quote.
extensions cornwall

Premium Modular Extensions In Cornwall

Ultraframe is the market leader offering the very best products available for home improvements such as Modular Extensions, Conservatories, and Orangeries. Ultraframe offers a number of UK-renowned product-lines. Listed below are just some of the frameworks we have on offer in Cornwall:

Tiled roof extensions in cornwall

Tiled Modular Extensions

The Ultraroof previously known as the Ultraroof 380 is a favorite for our customers looking to create a solid roof. We have installed many Ultraroof tiled conservatory roofs in Cornwall & Devon, they are the ultimate solution for modular extensions, being one of the lightest but also the strongest designs on the market. Fire-tested and thermally efficient, Ultraroof modular extensions coupled with a Durabase create the perfect modular extension with minimal mess and less interruption.

Lantern roof extensions in cornwall

Lantern Modular Extensions

If a full glass roof with slim sight-lines that create beautiful views of the stars at night and flood the room with natural light during the day is what you’re looking for, then our lantern extensions would be the perfect choice for you. The Ultrasky roof boasts 25% fewer bars than a conventional glazed roof and it also has no bulky radius ends, our Ultrasky Roof creates a room that is perfect for entertaining day & night and any time of the year, no matter the weather.
If the sleek modern look isn’t your thing then maybe a more traditional, classic glass design, which seamlessly fits with any chosen style of extension. How about the best of both worlds? A solid-glass hybrid roof combines the benefits of having a solid roof with the increased natural light of glass. The Livinroof is a bright, versatile product that is sure tobe the envy of your neighbours..

Aluminium roof extensions in cornwall

Aluminium Modular Extensions

Finally, if you want a product that’s going to stand out then you should have a look through our incredible Quantal aluminium range. With BBA accreditation acting as a seal of quality on these modular house extensions, you can rest assured that all the benefits of modern aluminium will be yours with one of these amazing designs.

Will I need planning permission for a modular extension?

Most single story builds come under permitted builds unless they do not have an external grade door seperating the extension from the main part of the house. If planning is reauired we will sort it out on your behalf.

Can I customise my modular extension?

YES! The modular extensions can be customised in almost any way that you can think of. You can choose from a variety of materials such as uPVC or maybe you prefer the slimmer lines of the latest aluminium products. Colours and finishes are also largely customisable and allow you to design a modular extension into a bespoke build.

Will I need to move services to install a modular extension?

No servcies will need to be moved when installing one of our modular extensions.

Are Ultraframe products mass produced?

Ultraframe products are not mass-produced in the sense that the products are all the same. Modular extensions are of course far easier to create and set up thanks to their pre-fab design, however, every single design is a bespoke product that has been designed specifically for your property.

Get in Touch With A HUman

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If you have any questions about any of our products, services, or guarantees, please get in touch we would look forward to hearing from you!

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Extensions In Cornwall - Best Glaze

A modular extension is a highly customisable, easier way of building an extension on your home, tailored to your needs and style, a bespoke build

Product Brand: Ultraframe

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