Home extensions built to work with your home — and your life.
From single-storey rear kitchen-diners to double-storey side extensions, we plan and deliver extensions across Torbay, Teignbridge and the South Hams. We work with your architect and structural engineer, or introduce trusted specialists we've worked with for years. Our house extensions in South Devon are shaped around the existing home and the space you need.
House extensions across South Devon
We plan and deliver home extensions in South Devon, from single-storey rear kitchen-diners to double-storey builds, side extensions and wrap-arounds. Our house extensions are managed by one owner-led team, with a free site visit and written quote to establish the scope before work begins.
For work in the South Hams, the plot and planning position guide the options. Explore two-storey extensions when you need additional space on both levels.
Scope of work
Every project is scoped individually, but here's what a typical extensions project with ADB SW covers.
- Single-storey rear, side and wrap-around extensions
- Double-storey extensions
- Open-plan kitchen-diner extensions with bi-folds & roof lanterns
- Groundworks, foundations & structural steel
- Full building control coordination
- Complete internal fit-out — plastering, flooring, kitchens, decoration
Single-storey and kitchen house extensions
An extension can create a larger kitchen-diner, improve the connection to a garden or add space across more than one floor. The best starting point is not a standard footprint but a clear brief: what feels constrained now, how people move through the house, and which rooms need daylight, storage or privacy? Those answers help an architect and builder shape a design that belongs to the existing home.
Single-storey work can be suitable for a rear living space or kitchen, while a double-storey or side extension may address needs on more than one level. The choice depends on the plot, existing layout, neighbouring context, structure and applicable planning and building control requirements. A kitchen extension also needs early thought about the kitchen layout, extraction, services, lighting and the relationship between preparation, dining and access outside.
Understanding extension costs and comfort
Extension costs are driven by more than floor area. Ground conditions and foundations, structural complexity, access, the number and type of openings, roof design, services, specification and internal fit-out all affect the work. Connecting to an existing kitchen or altering internal walls may add coordination. A site visit and design information are needed before a reliable project-specific quote can be prepared.
A new extension should feel comfortable as part of the home, not like a separate room with a different temperature. The design and construction need to account for insulation, airtightness, ventilation, glazing and how the new space connects to existing heating. Ask how these elements are addressed in the specification, especially around junctions between old and new construction.
A look at similar projects
A clear, considered process
Site visit & scope
We come to your home, walk the space and understand what you want the extension to do for you.
Detailed written quote
A clear, itemised quote with a realistic timeline — no vague lump sums.
Planning & design coordination
We work with your architect and structural engineer, or introduce trusted local specialists.
Build
One project manager, one team, tidy site, weekly updates.
Snag & handover
We don't leave until the finish stands up to close inspection.
"Tony and his team did a fantastic job on our new kitchen build. The quality of the finish is excellent, and the space has been transformed exactly as we hoped. They were professional, friendly, and easy to work with throughout the project. We're really pleased with the result and would highly recommend them to anyone looking for a reliable construction team."
Common questions
Can't see your question? Give us a call and we'll answer honestly.
Do you handle planning applications?+
We work alongside your architect and, where needed, can introduce trusted local architects and structural engineers to handle drawings, planning and building control.
How long does a typical single-storey extension take?+
Most single-storey extensions take between 10 and 16 weeks on site, depending on size and specification. We'll give you a specific timeline in your quote.
Will you manage the whole project?+
Yes — from groundworks through to painting the last skirting. Anthony is your single point of contact throughout.
Do you build front and side extensions in the South Hams?+
Front and side extensions can be considered as part of the house extension service in the South Hams. The plot, access, neighbouring context and planning position determine what is feasible, so the proposal needs assessing before the design and written scope are agreed.
What types of house extension do you build?+
The service includes single-storey rear and side extensions, wrap-arounds, kitchen-diner extensions and double-storey extensions. The right type depends on the space you need, the existing layout, structure and the applicable planning and building requirements.
What is a single-storey extension?+
It is an addition to a home built on one level, often to the rear or side. Its layout, size and feasibility depend on the property, site and applicable planning and building requirements.
Can a single-storey extension include a kitchen?+
Yes. Kitchen-diner extensions are part of the service scope. Plan the kitchen arrangement, services, lighting, ventilation and connection to the existing rooms early so they are reflected in the design and quote.
How much does a house extension cost?+
Cost depends on foundations, structure, size, access, glazing, roof design, services and fit-out specification. A site visit and a defined design and scope are needed for a useful written quote.
Will an extension feel cold compared with the existing house?+
Comfort depends on the insulation and ventilation strategy, glazing, construction details, heating and connection to the existing building. These should be coordinated in the design and build specification.
Do extensions always need planning permission?+
Not necessarily; some proposals may fall within permitted development, but this depends on the property and proposal. Check the applicable requirements for your circumstances and coordinate planning and building control as needed.
Tell us about your extensions project.
The more you can share, the more useful our first conversation will be. Include drawings if you have them.
Guides for extensions
Browse the guides library →- Extension costsWhat shapes an extension quote, from groundworks to finishes.
- Single vs two storeyWhether one storey or two makes more sense for your extension plans.
- Flat vs pitched roofWeighing up a flat roof against a pitched roof for your new extension.
- Planning permissionWhen planning permission applies, when it does not, and how Torbay, Teignbridge and South Hams differ.
- Wraparound extensionsL-shaped wraparound extensions: layout, roof, planning and the factors that drive cost.