About us
We Build Bespoke Modular Buildings
Sheffield & surrounding areas
Written Quotes & Schedules
Design and build service
Our Expertise
Industry Experienced Tradesmen
Trained & Approved Installers
CIOB Project management
Health & Safety Compliant
20 years Construction Industry trading
Fully Insured Company
We deliver modular solutions
for your extra space
Custombuilt home extensions offer an advanced approach to expanding your living space.
Advantages of Custombuilt system
- Efficient Installation: we embrace off-site construction to minimize disruption to your home life
- Cost-Effective: by a simplified building process, that is on a personalized scale without large scale set-up costs
- Sustainability Benefits from materials and designs that promote energy use & reduce resource consumption
Great design flexibility to acheive the look you want
Why choose Custombuilt ...
Designed to enhance your home
Individually built with Craftsmanship
Experienced Project Management
See some of our past projects with 60+ posts here
Questions you might have
Q. How does we construct home extensions differently to traditional extensions
A. Our prefabricated frames replace traditional blockwork wall for your extension. Made away from your home in offsite workshops using insulated panels. This system is usually reserved for large scale developers.
Q. Why use modular building for your domestic extension
A Less disruption, more quality consistency, better thermal performance, thinner walls, more design flexibility, less delays
Q. Why change from traditional building to modular home extensions
A. For over 10years we built traditional buildings, During a 3 year advanced construction program became involved in modular construction, where the benefits were clear to see.. Ever since we've developed & integrated these techniques to our individual residential projects.
Q. Are modular extensions accepted by mortgage companies and building surveyors.
A. Yes. Advances in modular techniques over recent years mean that financial institutions , surveyors & valuers now embrace and encourage modern and modular methods of construction.
Q. How will a prebuilt extension add value to my property.
A. Additional living space when combined with a robust specification and thoughtful design, will enhance your property's appearance and value.
Q. Will a new extension improve my home.
A. Well planned additional space can transform your living experience. Our extensions can also massively increase the thermal performance of your home reducing heat loss and heating costs.
Read what our past customers say about Custombuilt
Recent Projects & Reviews
"We wanted an extension to our house. I honestly had no idea where to start. Custombuilt helped design the ideas I had in my head and made the extension possible. All the things that were jargon to me or beyond my knowledge they would be there to support and make the extension work run smoothly. Excellent communication, very reliable. Highly recommend this company, Thank you again!"
Camilla Davenport Single storey Extension, Sheffield
"I required an extra room, I had no plans or architects drawings. Custombuilt sent me some wonderful pictures, of what the end result could look like. From my initial idea, and the great expertise of Custombuilt, a fantastic extension was created. Pete and his team worked diligently through all manner of weather, and problems that were thrown at them, and I am so pleased, delighted in fact, with the result. I would not hesitate to recommend Pete and his team to anyone with an idea in their head. Sometimes dreams do come true. Many thanks "
Wendy Schofield, Single Storey extension, Chesterfield
PROJECT: Property remodeling
Single storey and double extensions
Loft conversion
Extensive renovation with CO2 & Energy saving systems
Create new bio-diverse habitats
"We had Custombuilt to do our double storey and single storey extension, plus complete renovation of our 1930's home. Pete project managed the whole thing with his team. On site everyday, with his trusted trades. His communication was second to none - kept us in the loop as we weren't on living on site. Plenty emails, what's apps and phone calls - talked us through each part of the process, which was very reassuring particularly when your spending large sums of money! There was barely a snag list at the end as he was so thorough but the little things there were got sorted super quick. Would highly recommend using Custombuilt, had complete trust and we have a beautiful home as a result. Thank you"
Miranda Murray, Single and double storey Extensions, Sheffield
3 storey extension , Renovation and
Loft conversion in Peak District
Engineered first floor solution
Recent client comments
"We committed to using sustainable materials and minimizing the carbon footprint where we can. The reduced need for heating and the addition of solar panels all contribute to lowering the structure's environmental impact."
"The extension is an enjoyable experience. Integrated entertainment, wi-fi connections, smart lighting, and underfloor heating all controlled on our apps."
"The open-plan design offers flexibility in room layout and the new garden room is a brilliant space to unwind."
"We've noticed a difference with the new extension. The rooms remain warm, free from drafts, providing a cozy and relaxing environment, even on the chilliest days."
We need your consent to load the translations
We use a third-party service to translate the website content that may collect data about your activity. Please review the details in the privacy policy and accept the service to view the translations.