Single and two-storey extensions, loft conversions and full renovations
Extensions and renovations are the heart of Thorn Homes. We build single and two-storey extensions, loft and garage conversions and complete refurbishments across Cheltenham, Gloucester and the Cotswolds, finished to blend with your existing home.
Whether you want a bigger kitchen, an open-plan living space or extra bedrooms, every project is run by one of our own employed site foremen, so there is a named person on site who knows your job inside out.
Extensions can be designed by our sister company PSK Architect or by your own architect. We have worked with many independent architects over the years and are happy to price from existing drawings.
As members of the Federation of Master Builders, we work to a strict code of conduct, and we stay contactable after completion. See Warranty & Aftercare for how we look after you once the build is finished.
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What's Included
Side, rear and wrap-around extensions built around your existing home.
Kitchen-diners, roof lanterns, glazed gables and bi-fold doors that bring the garden in.
Create bedrooms, en suites or a home office from the space you already own.
Full internal refurbishments, reconfigured layouts and new kitchens and bathrooms.
Natural stone, brick, render and cladding chosen to suit your home and its setting.
Design through PSK Architect within the group, or we build from your own architect's drawings.
Our Work
Extensions · Winchcombe
Quality craftsmanship with vaulted ceilings, exposed oak beams and natural stone walls. Featuring a striking round window, oak-framed doors and windows, Welsh slate roofing and conservation roof lights, the design blends character, durability and timeless style.
View projectExtensions · Hatherley, Cheltenham
Bright, open-plan living with a spacious kitchen and dining area featuring a central island. Matching kitchen and cloakroom cabinetry ensure a cohesive design, while a downstairs bathroom adds practicality. Two large sliding doors maximise natural light and connect seamlessly to the garden.
View projectExtensions · Cirencester
A thoughtfully designed extension that enhances the character of the original home while introducing bright, modern open-plan living. Finished with Cotswold natural stone and Welsh slate roofing, the new space blends seamlessly with the existing property and its setting.
View projectExtensions · Cheltenham
This extension transforms everyday living with a beautifully designed kitchen, utility, dining space, bathrooms and patio. Bi-fold doors give easy indoor and outdoor living and maximise natural light while combining practical layouts with modern style.
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Extensions · Cheltenham
A single-storey side and rear extension that adds a new kitchen under a roof lantern, an open-plan living space and a separate utility room. New cladding on the front of the house ties the extension and the original home together.
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Extensions · Cirencester
This completed rear extension in Cirencester combines traditional Cotswold character with modern, open-plan living. Featuring Cotswold natural stone and Welsh slate roofing, the extension blends seamlessly with the original property while creating a bright, spacious and practical home for modern living.
View projectFor a free consultation call 01452 714 200 or get in touch using our enquiry form.