Conservatory Conversions
Modern Conservatory Comfort for Year Round Living
A conservatory is a brilliant traditional way of linking your main dwelling to your garden, enjoying the best of both worlds – a warm and comfortable room that feels like it is as much a part of the garden as the house.
However, many conservatories were built in the boom of the 1970s and 1980s, and are now suffering from a number of drawbacks, not least the perpetual problem of being too cold in the winter and too warm in the summer.
Our Conservatory Conversions
Modern Conservatory Conversions for Stylish and Cost Effective Living
Our conservatory conversions will usually keep the foundations that were used on the existing conservatory…but change pretty much everything else! The emergence of Modular technology means not just replacing the glazing, but the walls and rooves too, meaning a stunning new room that has a completely new layout, and is bang up to date, too.
By keeping the existing foundations, the price of a conservatory conversion will be less than a complete new room, whilst being faster to build and install.
Explore More Ways to Extend Your Home:
Conservatory Conversions
Granny Annexes
Garden Rooms
Why Modular?
A SMARTER WAY TO TRANSFORM YOUR CONSERVATORY
Modular builds differ from traditional builds in that the construction of the superstructure takes place in a factory off-site. ‘Superstructure’ includes the walls, roof cassettes and where necessary floor construction. The components are then delivered when they are needed to the site and can be fully constructed in rapid fashion.
Opting for a modular extension opens up the option of ‘parallel manufacturing’, where the construction of the superstructure is done to precisely match when it is needed. This speeds up delivery and installation, and ensures that, for example, there is no waiting for site measuring.

Faster Construction
Because the structure is built off-site, installation on your property is completed in a fraction of the time compared to traditional building methods.

Precision & Quality
Factory-controlled manufacturing ensures tighter tolerances, better consistency, and a higher standard of finish than on-site construction.

Energy Efficient
Modular extensions outperform many traditional builds with superior insulation, reduced thermal bridging, and improved airtightness.

Low Carbon Approach
With less on-site waste and efficient manufacturing processes, modular construction offers a more environmentally responsible solution.

About Conservatory Conversions
Modern Conservatory Conversions Benefits and Improvements
Most people love the idea of a fully glazed room that links the main house to the garden. However as technology has evolved, many older conservatories suffer from a number of disadvantages, all of which can be mitigated by a brand new conservatory conversion.
These disadvantages include:
- Tired, uninspiring look and feel
- Poor insulation properties
- Configuration no longer fit for purpose
- Old wiring that needs to be updated
- Broken or damaged roof panels and glazing
By converting your conservatory, you can bring all the advantages of modern, modular builds to your house whilst also adding value.
Not sure if a conservatory conversion is right for your home? Contact us today for expert advice.
Configurations and Size
What Size Can Your Conservatory Conversion Be?
If you are re-using the foundations of your existing conservatory, your new conversion will likely be the same size. However, feel free to consult with us about changing the size and dimensions of your conversion, and we’ll ensure you get all the information you need to base your decision on.
Not sure what size or layout will work best? Contact our team for expert guidance tailored to your space.
Why choose Us?
Why Modexa Build?
First and foremost we are experienced construction experts, capable of handling the entirety of your project, from enquiry, through a proposal, site survey to manufacture and installation.
With decades of experience and dozens of projects, you can trust us to take your vision into reality.
We work right across the North of the UK, and all our customers love our attention to detail and approachable demeanour.

End to End Project Management
From first enquiry to final installation

Decades of Experience
Trusted expertise across every stage

Local & Reliable
Serving homes across the North of the UK

Detail-Focused Approach
Precision and care in every project

Friendly, Professional Team
Easy to work with from start to finish
You will find us professional, amenable and hard-working. Contact us now to have a chat about your plans!
Finishes
Built to Look Exceptional and Perform Better
We offer a full range of interior and exterior finishes, depending on whether you want your extension to blend in with your existing property, or stand out and make a statement! We have experience of a number of aesthetic embellishments depending on your taste.
Here are just some of our options:
Brick Slips
Render
Aluminium Cladding
Zinc Cladding
Timber Cladding
Finally, by combining two or more different materials, we can give your modular extension a unique, bespoke and breathtaking finish!
Take a look at our Guide to Modular Extensions for more information about finishes.
High-Performance
improve your home’s carbon footprint
Our modular extensions are designed to deliver exceptional energy efficiency, improved comfort, and long-term value for your home.

EPC Performance
Modexa’s modular extensions are built using our modular system and are designed to achieve very high EPC ratings, typically A or high B, thanks to precision factory manufacturing, high insulation levels and reduced thermal bridging.
This will be a stand-alone rating and will be added to the main house rating, often meaning your extension will outperform your main house.
Higher EPC ratings mean:
- Lower energy bills.
- Reduced carbon emissions
- Increased property value/ resale value
- Better mortgage and lending options

Air Tightness & Thermal
Because Modexa modular extensions are manufactured in controlled factory conditions, construction tolerances are far tighter than traditional building.
This results in:
- Significantly reduced air leakage
- Improved thermal efficiency
- Consistent insulation installation
- Lower heating demand
Typical modular airtightness levels can be 70% better than many traditional builds.

Renewable Energy Ready
Modexa Modular extensions are designed to integrate seamlessly with modern renewable technologies such as:
- Solar PV systems
- Air source heat pumps
- Smart energy systems
This ensures your extension is ready for the future – High Performance Living.
Build smarter. Live better. Talk to our team now to deliver exceptional energy efficiency.
Pricing
what’s included in the price
Our pricing is based on the size of your extension, giving you a clear idea of costs from the outset. Use the guide below to estimate your project and what’s included as standard.
All prices are estimates and may vary depending on site conditions.
Conservatory conversions | |||||
External dimensions | 3 | 4 | 5 | 6 | 7 |
3 | £29,860 | £33,071 | £36,281 | £39,492 | £42,702 |
3.5 | £31,451 | £35,143 | £38,834 | £42,526 | £46,218 |
4 | £33,042 | £37,215 | £41,388 | £45,561 | £49,734 |
4.5 | £34,633 | £39,287 | £43,941 | £48,596 | £53,250 |
5 | £36,224 | £41,359 | £46,495 | £51,630 | £56,766 |
5.5 | £37,814 | £43,431 | £49,048 | £54,665 | £60,282 |
6 | £39,405 | £45,503 | £51,602 | £57,700 | £63,798 |

What's Included
- External walls and primary structure
- Flat roof system
- Supply and installation of 1no. external windows, 1no. roof lantern and a 3-leaf bi-fold door set
- Basic drainage connection and tie-in
- Boarded and skimmed
- This package provides a secure, weatherproof structure ready for internal fit-out works

What's not Included
- Foundations
- Internal structural alterations and calculations
- Additional External items (patio, paths etc)
- Electric, plumbing & heating (apart from underfloor heating in the extension)
- Decoration
- Flooring & skirting
- Lighting & socket
- Kitchen supply & installation
However, a full package can be undertaken by Modexa build; Please Contact our team for further information or a quick estimate.
Benefits
Modular vs Traditional Extensions
See how modular construction compares to traditional building methods across key areas that matter most.

Speed of Construction
Modular
A modular build can be completed up to 70% faster than a traditional build, and with a total lead time of 4-6 weeks
Traditional
Traditional builds are subject to on-site delays. For example, glazing cannot be ordered until the brick is completed

Cost
Modular
You will get a fixed price from Modexa Build, with no hidden charges to worry about
Traditional
Variable costs where the original budget can often be exceeded

Your build time
Modular
All components will arrive exactly on time, when they are meant to, reducing disruption and uncertainty
Traditional
Much more difficult to estimate, leading to delays and protracted build times

Quality
Modular
Built in a controlled manufacturing environment for a consistency of quality
Traditional
Subject to a number of variations, such as labour, material, climate etc

Design
Modular
Manufactured bespoke for every project to meet your exacting needs
Traditional
Custom builds can be slow and lead to additional cost

Energy Performance
Modular
High performance due to minimal air leakage and type of materials used
Traditional
Will exhibit most of the energy loss associated with traditional build

Process Management
Modular
Processes follow similar standards so are streamlined and executed with vast experience
Traditional
Every build is different, each crew can differ, the list of sub contractors can also differ

Site Impact
Modular
Minimal disruption for a shorter amount of time
Traditional
Significant disruption over a protracted period of time
How it Works
How our design and build process works:

1
Consultation
Get in touch with us for an initial, no obligation chat about your potential project. You’ll find us experienced, professional and full of ideas. What do you want from your extension? How is it going to improve your living space?

2
Site Assessment
In order to provide you with an accurate quotation, and discuss your vision in situ, we will visit the site of the proposed build and consult with you about what can be achieved.

3
Design and Quotation
We will provide you with a tailored proposal resulting from our consultation. The proposal will be fully costed and give you accurate information around delivery and lead times, including specifications and technical drawings.

4
Off-site Construction
Whilst the superstructure is being manufactured off-site with our manufacturing partners, we will be preparing your site for delivery, so that, on delivery, everything goes as smooth as possible.

5
Delivery and Installation
With a fully-prepared site now in place, all modules will arrive ready to assemble, with installation fully completed within days.
frequently asked questions
Your Questions, Answered
Here are some of the most common questions about our modular extensions, pricing, and process.
Conservatories were extremely popular in the 1980s and 1990s, where the UK saw a huge growth in their popularity. As a result, many older generation conservatories are showing their age. Modexa Build are experts in taking an older conservatory and bringing it up to date with a new roof, new walls, new layouts and much better insulation properties.
Subject to a foundation survey, a conservatory conversion will generally use the existing conservatory as its base, so will usually be the same size.
The cost of a conservatory conversion will largely depend on what needs converting. For example, a replacement roof will inevitably be cheaper than if the roof and walls need replacing. Also make allowance for improvements to insulation, too
Yes, updating an older, inefficient conservatory will add value to your property. In fact, older and unsightly conservatories can often not add value to a property if they are deemed to be of little benefit to a purchaser.
Traditionally, older conservatories would suffer from being too cold in the winter and too hot in the summer. With innovations in thermal retention and glazing, a converted conservatory can get over these issues and be a wonderful space to use all year round.
A modular approach is ideal for conservatory conversions; they are built off-site and assembled on site, reducing the amount of time a conservatory will be open to the elements during build.
Still have questions? Contact our team for friendly advice and guidance.
Questionnaire
Ready to Transform Your Home?
Complete our quick questionnaire and receive a personalised estimate, before you spend money on architects or drawings.