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Extension builders working across Leeds: single and two storey, steels and structural openings. Designed by a structural engineer, inspected by building control at every stage, and finished in brick or stone that matches the house it's joined to.
What we build
Most of what we build is a rear or side extension on a Leeds house that has run out of room.
The trade underneath is the same either way: an engineer's drawing, a beam sized to the calcs, and building control looking at the work before it gets covered up.
Kitchens across the back, side returns, garden rooms. The bread and butter, and the jobs where matching the outer leaf makes the biggest difference to whether the finished house reads as one building or two.
Usually 8 to 12 weeks on site
A bedroom over the kitchen, a side return taken up to the eaves, a full gable rebuild. More steel, more scaffold. The quote is written and fixed before any of it starts.
Planning permission usually needed. We'll check yours first
Two rooms knocked into one, a load-bearing wall out, an opening cut through to a new extension. The engineer sizes the beam and the padstones, we fit them to those calcs, building control looks before anything is boxed in.
A structural engineer specs every beam we fitConverting the garage rather than building new? Same trade, smaller job: a new insulated floor, the door opening bricked up with a window in, the walls lined and building control signing it off as habitable space. Send a photo of the garage and we'll tell you what yours would need.
Starting smaller still? We build porches too: oak canopies sat on proper stone dwarf walls, or a full stone porch built from the ground up. Days rather than weeks, and most don't need planning permission.
We photograph every stage of every extension, including the ones that end up behind plaster. Below is what those twelve weeks look like, stage by stage, off our own jobs. Yours gets documented the same way, and you keep the photographs at the end.
The trench goes to the depth the engineer's drawing says, not the depth that suits us, and building control looks in it before a drop of concrete is poured. Drains get diverted here if any run through the footprint. Nobody ever sees this fortnight, and everything else stands on it.
Foundation blockwork up out of the ground, then the damp-proof course laid in and lapped into the house's existing DPC so the two work as one. Building control comes back. An unglamorous week that decides whether the new room is still dry in twenty years.
The RSJs go in to the engineer's calcs, on padstones sized in those same calcs, propped until they are bearing properly. This is the moment the wall between the old house and the new room stops existing. Done right, the house above never knows anything happened.
Cavity walls up, insulation in, wall ties at the right centres. The outer leaf is where a building site starts looking like your house: brick matched by sample, or a reclaimed Yorkshire stone leaf coursed off your original elevations so the lines run straight through. The slowest weeks, and the reason people can't find the join.
Roof structure, membrane, battens, then slates or tiles, with lead dressed into the junction where the new roof meets the old. Windows and doors in. From this week the weather can do what it likes and the inside work carries on regardless, which is why we push hard to reach it before winter.
First fix, plaster, second fix, floors, then the last building control inspection. You get the completion certificate, the workmanship guarantee in writing, and the photographs of everything that is now behind plaster.
If yours is still at the thinking stage, we'll come out and talk it through before anything is priced.
Book a site visit →Real jobs
Our photos, our jobs. If it's on this page we built it, and we'll tell you what it's made of. The labelled panels are shots still on our list, not somebody else's photos standing in.
A brick rear extension, coursed to match the house it's joined to.
The same stone job that closes the section above, close on the coursing
Measured on site, priced off the engineer's drawings, itemised line by line.
Get a written quoteor see the extensions in the projects
What it costs
You won't find a price on this page, because anyone quoting an extension off a website is guessing. What we can do is show you where the money goes, so you can read any builder's quote and see what you're paying for. Then send us the drawings, or a couple of photos of the back of the house, and you'll get a real number in writing.
Size and shape
Floor area is the obvious one. Less obvious: a long thin extension carries far more wall per square metre than a square one, and the wall is where the money is.
Spec level
The shell is the shell. Kitchens, glazing, underfloor heating, flooring and finishes are where two extensions of identical size stop being comparable at all.
Groundworks
What is under the garden. A drain run through the footprint, a deep dig on made ground, rock, or a tree with a root protection zone, all of it settled before we price.
The steels
How much wall comes out, and how far the beam has to span. One opening is one number. A full open-plan span carried on a corner post is a different job.
Stone or brick
Reclaimed stone costs more to buy and more to lay than brick. It arrives in mixed bed heights, and somebody has to pick every course by hand.
The finish where it meets
Roof junctions, running the new eaves line into the old, rebuilding a section of the original wall so the two read as one house. The detail nobody quotes for, and everybody notices.
Got drawings already? Send them over and we'll price them properly.
Get a written quote →
Stone matching
Brick matched properly by sample, or a reclaimed Yorkshire stone outer leaf coursed to your original walls. New stone reads new for years, so the reclaimed comes from yards that have the right bed heights and the right weathering, picked course by course. It's the craft we're known for, and almost nobody else in Leeds offers it on an extension.
Stone-matched extensions →Why us
An extension is the biggest job most people ever have done to their house, and the advice everyone gets is the same list of things to check. Here it is, answered before you have to ask.
The guarantee, in short
Structural work on an extension carries a 10-year workmanship guarantee. Built to Building Regulations and signed off by building control at every stage.
Common questions
Alternatives
An extension is right when you need floor space you can heat, stand in and sell. It isn't always the answer, and these three are the honest sideways steps.
Better when: the problem is the front of the house, not the size of it: shelter over the door, somewhere for boots and parcels, and kerb appeal.
The trade-off: it doesn't give you a room. A porch is days and no engineer, but you finish with an entrance, not floor space.
See Porches →Better when: the stone work is the whole job: a garden wall, a rebuilt frontage, steps or a feature, with no new roof over it.
The trade-off: you get the masonry from the same hands and the same yards, without the groundworks, steels and building control that an extension carries.
See Stone masonry →Better when: you're not ready to talk to a builder yet and want to see what this work looks like, week by week, on real Leeds houses.
The trade-off: photos and case studies only. Nobody can tell you what your house needs until somebody has stood in the garden and looked at it.
Browse the extensions →And if it is an extension, we'll say so, price it in writing and tell you when we could start.
Send the drawings if you have them, or a couple of photos of the back of the house and a rough idea of what you want out there. We'll come and measure up, and you'll get a written, itemised, fixed-price quote and a real answer on when we could start.
Public liability £5m · employer's liability £10m · contract works cover on extension work · written, itemised quotes · 10-year workmanship guarantee in writing.
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