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I'm not sure if you mean the whole floor or the bottom of the steps....
If the bottom of the steps, depending on how much you're talking about an sds and chisel set could do it. If it's deeper I'd work out a way to get a roughly even depth with an angle grinder/similar then chisel that out.
If the whole floor I reckon paying someone in one go is the way to go. You need to dispose of all the rubbish as well so I think even DIY costs will add up.
hugo7-
If it's the whole floor there's every chance that it's just the foundation slab
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Yeah it's the whole floor. Sorry, was in the garden typing as I thought of it so wasn't my clearest post.
We're mid terrace against a steep hill. Our side return is at ground floor but at the end leads up a steep flight of steps to a decked area which is currently at two levels - the level closest the house being higher and above the utility room.
Access (apart from the exterior staircase via side return - still waiting for Weird Al do a Bluetones cover) is through a (large tilt turn) window in the office at the back of the house. The window aperture starts at knee height and is an awkward climb through. I'd like to be able to have floor to ceiling (or near enough) doors in the future.
But I think the only way to achieve this is to lower the height of the decking which means lowering the height of the floor in the util room.
Or just move but that's not on the cards any time soon.
The kitchen is already a step above the rest of the house (step up from hallway). The kitchen floor is boarded and there's a cavity/crawl space underneath big enough to crawl around down there. I've never looked what's under the concretey bit but suspect it goes to a slope of some kind and the utility room was a later addition to the house. So it could well be some kind of foundation to stop the hill above us sliding into the house.
Grumpy_Git
CYOA
The back of our kitchen leads up some wonky concrete steps to a washing machine room. How would I go about chiseling all of that floor out so it's the same level as the kitchen. My intention for this would be so I could lower the roof of that room which would allow me to lower the decked area above it/outside to eventually have a door leading out to the garden instead of a window that I have to climb through.
How DIY-ish is the first part - I think the lowering of the roof will be beyond me but am trying to cut costs where possible.