Specialists in Precision Built Modular house Extensions
Modexa Build designs and delivers high-quality modular house extensions across the North of England. Faster, cleaner and more predictable than traditional construction.
Modular Buildings
Faster, Smarter, and More Efficient Construction
A modular building is constructed in a precision-controlled manufacturing facility before being delivered to site ready for assembly. This modern method of constructing house extensions offers significant advantages over traditional building methods.
Compared with traditional construction, modular building offers:
Faster Build Times
Improved Quality Control
Reduced Disruption
Greater Energy Efficiency
More Predictable Project Costs
Whether you’re adding a house extension, annex or garden rooms, modular construction provides a modern solution to creating additional living space.
Love where you live
Create More Space Without Leaving the Location You Love
You love your home and the area you’re in, but sometimes you just need a little more space. A modular house extension is a smarter, faster and more efficient way to create the lifestyle you want – without the stress of moving.
At Modexa Build, we manage your entire project from design to installation, delivering a high-quality house extension on time and on budget.
Get the space you need in the location you love.
BUILT IN THE UK
Precision Manufactured in Britain, Proven Across Europe
All Modexa modular homes and house extensions are designed and manufactured in the UK in accordance with current UK Building Regulations before being delivered to site for rapid installation.
By manufacturing in a controlled factory environment, we achieve:
Exceptional precision and build quality
Improved airtightness and energy efficiency
Greater quality control
Reduced waste and environmental impact
Fewer weather-related delays
At Modexa Build, we are committed to bringing this proven European approach to homeowners across the UK, delivering sustainable, efficient and future-ready living spaces.
Fixed Price
Transparent Pricing with No Hidden Costs
At Modexa Build, we believe every customer deserves complete confidence in the cost of their project.
Because modular homes and extensions are fully designed, specified and priced before manufacturing begins, we can provide fixed-price quotations with clear project timescales.
This approach offers:
• Greater budget certainty
• Reduced risk of unexpected costs
• Transparent project planning
• Faster delivery schedules
• Improved peace of mind
Traditional building projects can often encounter unforeseen issues that increase costs and extend completion dates. Modular construction significantly reduces these risks by finalising designs and costs before installation begins.
Extension types
Modular Solutions Designed Around Your Lifestyle
Every homeowner’s requirements are different. That’s why Modexa Build offers a variety of modular construction solutions designed to suit different lifestyles, properties and budgets.
Whether you’re considering a single-storey extension, double-storey extension or wraparound extension, modular construction provides a faster and more efficient alternative to traditional building methods.
Create a beautiful and versatile space for work, relaxation, entertainment or hobbies with a bespoke modular garden room.
Provide comfortable and independent accommodation for family members with a purpose-built modular annexe tailored to your needs.
Transform an outdated conservatory into a modern, insulated and energy-efficient living space that can be enjoyed throughout the year.
Modular construction offers an ideal solution for creating accessible and future-proof living spaces that adapt to changing mobility and lifestyle requirements.
CASE STUDY
See How We Transformed This Home with Modular Construction
Every project tells a story.
Discover how Modexa Build helped a homeowner create additional living space using modern modular construction methods, delivering a high-quality house extension with minimal disruption and exceptional results.
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.
A modular extension is manufactured off-site and delivered ready for installation. It consists of precision-engineered structural components that meet current Building Regulations and are assembled quickly on site.
The cost of a modular extension depends on factors such as size, specification and complexity. Larger projects generally require greater manufacturing and installation input.
For a detailed breakdown, view our Modular Extension Cost Guide.
Not necessarily. Modexa Build can provide a complete design-and-build service using our own measurements, designs and technical drawings, helping to reduce project costs and streamline the process.
For particularly complex projects, independent architectural advice may be beneficial.
Still have questions? Contact our team for friendly advice and guidance.
Our Locations
Modexa Build are proud to serve the following regions:
York, Leeds, Bradford, Newcastle, Sheffield, Hull, Malton, Norton-on-Derwent, Pickering, Stamford Bridge, Kirkbymoorside, Helmsley, York, Driffield, Pocklington, Scarborough, Filey, Easingwold, Market Weighton, Tadcaster, Thirsk, Bridlington, Guisborough, Selby, Knaresborough, Northallerton, Stokesley, Whitby, Harrogate, Ripon, Middlesbrough