Kitchens
Most rear extensions exist to create the kitchen. Plan them together.
Renovation
You have outgrown the house, not the address.
Extending is how you stay in the home and street you chose, and it is the largest building project most owners ever commission. Tell us where you have got to, even if that is only an idea, and we will introduce builders who have delivered extensions like yours.
What we cover
Typical extension projects
- Single storey rear extensions: the classic route to a larger kitchen, dining or family space.
- Double storey extensions: extra bedrooms above, living space below, one build.
- Side and side-return extensions: reclaiming the narrow strip that many period houses waste.
- Wraparound extensions: rear and side combined for the largest change in footprint.
- Kitchen extensions: where the new space is designed around the kitchen from day one.
- Garage conversions: turning existing footprint into habitable space without extending at all.
What we will ask you
So we can match you accurately, the enquiry asks whether you are planning a single or double storey extension; whether it is to the rear, the side or a wraparound; the approximate size; where you stand with planning permission; and, if planning is in hand, whether you already have drawings. Planning status and drawings genuinely change which builders are suitable, so it is worth telling us.
Every question has a “not sure yet” option. You do not need to have decided anything before you talk to us.
Why choose Kalvaro
Who is suitable depends on where you are
An owner with approved drawings needs a builder who can price and deliver them. An owner with an idea needs a design-and-build firm or an architect first. Sending the same three names to both is how matching goes wrong, so we read your enquiry before anyone is introduced.
Verified before introduction
Trading history, public liability insurance and relevant accreditations, all checked before any builder is introduced.
Evidence of completed builds
Every partner submits photographs of finished extensions as part of their application. A long build deserves proof, not promises.
Matched to your stage
Design stage, planning stage or ready to build: we introduce professionals who work at the stage you are actually at.
How it works
Four steps, one conversation
1Tell us about your extension
A few guided questions about the space you want and where you are with planning.
2We review your requirements
A member of our team reads it personally.
3We introduce extension builders
A small number of suitable, vetted partners.
4You choose with confidence
Compare, decide and start on your terms.
Completed work
Recent extension projects
What this page will show once our founding partners have work to photograph.
Photography is coming, and it will be real
This is Kalvaro artwork, not a photograph. We have deliberately not filled this page with stock images of somebody else’s extension, because presenting bought imagery as a partner’s own work is exactly the sort of thing we exist to avoid.
As our founding partners complete extension projects, their photographs will replace this, with their permission and their name against the work.
Extension questions
Frequently asked
No. Come to us at whatever stage you are at. Some extensions fall under permitted development, others need a full application, and the professionals we introduce can advise on the route your project needs. The enquiry simply asks where you stand so we introduce the right kind of firm.
Not at all, but it changes who we introduce. Without drawings, a design-and-build firm that handles the whole journey is often the better fit. With drawings, builders can price the work as designed. That is exactly why we ask.
Usually, yes, especially for rear and side extensions where the house is only opened up to the new structure late in the build. It depends on the project, and the professionals we introduce will be straightforward with you about the disruptive weeks.
It depends on the size, the ground, the design and the season. A realistic schedule can only come from a builder who has seen your drawings and your site, and that is what the professionals we introduce will give you.
The professional you choose does, directly with you. Kalvaro makes the introduction and takes no part in pricing, so we neither set nor guarantee what the work will cost.
Every extension needs building regulations approval, and building close to a boundary can bring the Party Wall Act into play with your neighbours. These are normal parts of the process, and the established firms we introduce deal with both routinely and will explain what applies to your project.
Related services
Often planned together
Loft conversions
The other route to more space, sometimes the better-value one.
Landscaping
An extension changes the garden. Many owners reshape both at once.
Ready to discuss your extension?
It takes a few minutes and costs nothing. Our team will review your project within one working day.