House extension builders in Manchester
We build single and two-storey, side-return and wraparound extensions in Manchester, with one team from the drawings to the last coat of paint.
Across the Pennines, but closer than you'd think. We take on extensions, new builds and bigger refits in Greater Manchester.
What to know before you start
Planning in Manchester
Many single-storey rear extensions fall under permitted development. Anything bigger, or in a conservation area, needs planning permission from Manchester City Council. We prepare the drawings and handle the application.
Matching your house
Red-brick Victorian terraces and 1930s semis across suburbs like Didsbury, Chorlton and Stockport. We match the stone, brick or render so the extension looks like it was always there.
Building regulations
Every extension needs building regulations approval, even without planning. We book the inspections at each stage and hand you the completion certificate.
Around Manchester
We also work across Oldham, Stockport, Salford, Saddleworth and the rest of the area. Same team, same standards, wherever the job is.
Extensions in Manchester: common questions
Do I need planning permission for an extension in Manchester?
Often not. Many single-storey rear extensions fall under permitted development. If yours does need permission, the application goes to Manchester City Council, and we prepare and submit it for you.
How much does an extension in Manchester cost?
We can't give a fair price without seeing the job. Size, number of storeys, ground conditions, glazing and the kitchen or bathroom fit-out all change the price. We visit for free, measure up and send an itemised quote, so you can see exactly where the money goes.
More from K&M in Manchester
Planning an extension in Manchester?
We'll visit, measure up and give you a clear, itemised quote, free.


