Est. 2004 - Cheltenham & the Cotswolds
Home extensions in Cheltenham that feel like they were meant to be there
A well-built extension does more than add space. It changes how the house lives: the kitchen opening to the garden, the darker rooms brought into use, the extra bedroom that makes the whole layout work, and the new parts sitting naturally with the old.
For homes ready for their next chapter
The best extensions do not feel like an add-on. They make the existing house work harder, bringing in more light, better flow and spaces that suit the way people actually live.
Tombs Developments builds home extensions across Cheltenham, Gloucestershire and the Cotswolds, often working with architects on homes where the join between old and new matters. Whether it is a rear extension, a two-storey addition, a side return or a larger reworking of the ground floor, the aim is the same: to make the finished home feel whole.
Recent work
A closer look at our recent extensions
Extension projects across Cheltenham, Gloucestershire and the Cotswolds.
Sydenham Rd South
ExtensionsExtensive remodeling works to create a beautiful family home.
Shipton Oliffe 1
ExtensionsA large kitchen extension in oak and Cotswold stone has transformed this house.
Shipton Oliffe 2
ExtensionsAn ornate Cotswold stone extension that seamlessly links the internal and external spaces.
How we work
From the first site decisions to the final finish
An extension touches more than the part being built. Openings, structure, drainage, services, materials and finishes all need to meet the existing house properly.
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Reading the plans against the house
Reviewing the drawings, structure, access and site conditions before work begins, so the build starts with a clear view of how the new space will meet the existing home.
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Groundworks and structural changes
Excavations, foundations, drainage, steelwork, openings and masonry, forming the structure that allows the extension to become part of the house.
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Making the new space weather-tight
Roofing, windows, doors, insulation and external finishes, protecting the new structure and allowing the internal work to move forward.
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Services and interior work
Plumbing, electrics, heating, plastering, joinery and internal finishes, bringing the new rooms to life and connecting them properly to the rest of the home.
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Finishing, snagging and handover
Decoration, flooring, external details, final checks and handover, so the extension feels ready to live in rather than simply built.
What we build
Different extensions change a home in different ways
The right form depends on the house, the plot, the planning position and what the home is missing now. Some extensions create a single generous room. Others alter the whole rhythm of the house.
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Single-storey extensions
Often used to create kitchen, dining and living spaces that open the back of the house to the garden and bring more natural light into everyday rooms.
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Double-storey extensions
A way to add meaningful space upstairs and downstairs, from larger ground-floor living areas to extra bedrooms, bathrooms or a better family layout.
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Side extensions
Useful where there is unused space to the side of the house, helping widen the plan, improve circulation or make the layout feel more balanced.
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Rear extensions
A strong choice for homes where the back of the house no longer works well, creating a better relationship between the living spaces and the garden.
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Wrap-around extensions
For homes where the side and rear can work together, creating a more dramatic change to the ground floor and how the home is used day to day.
Why Tombs
Building work with the right people close to the detail
A high-quality build depends on more than the plans. Tombs brings together experienced site judgement, trusted local trades and close involvement from Dom and Iain, helping clients and architects across Cheltenham and the Cotswolds move from drawings to a finished home with confidence.
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Experienced oversight
Clients work directly with people who understand the decisions being made on site, from the early practical details through to the final finish.
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Trusted by architects and repeat clients
Much of Tombs work comes through recommendations, repeat clients and long-standing local relationships.
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Recognised Cheltenham projects
Tombs work has been recognised by the Cheltenham Civic Society, including awards for Best New Build.
Built around the quality of the home
The right builder should make a project feel considered from the first decisions through to the final finish. Tombs brings that level of care to homes where detail, proportion and long-term quality matter.
Testimonials
Trusted by clients who value the detail
For private residential projects, the standard of the finished work is only part of the measure. Clients also need clear judgement, careful communication and confidence that the detail is being protected throughout the build.
“Every decision felt properly considered. Tombs kept the work clear, carefully managed and true to the quality we wanted for the house.”
Homeowner, Cheltenham
Private residential building work
FAQs
Questions before a project starts
Choosing a builder for a residential project often comes with practical questions around scope, architects, timings and how decisions are managed. These answers give a clearer sense of how Tombs works before a first conversation.
Ask a questionYes. Tombs often works alongside architects and can be involved before work begins, helping to think through practical details, sequencing and decisions that may affect the build.
What else we do
Other ways Tombs can shape and improve a home
An extension is one way to change how a home feels. Tombs also builds new homes, reworks existing houses and carries out sensitive work to older properties across Cheltenham, Gloucestershire and the Cotswolds.
New-build homes
Complete builds shaped around the plans, materials and standards agreed at the start.
Extensions
Additions that connect with the existing home, practically and visually.
Renovations & refurbishments
Projects where layout, structure, materials and finish are handled with care.
Listed & period properties
Older homes where experience, judgement and respect for the building matter.