Garage Conversion - Costs?

[stiscooby]

Hi,

I'm looking to convert my existing garage (single attached garage) into another habitable room inside the house.

Two thirds of the garage have already been converted into a room and is already accessible from inside the house. This however hasn't been insulated properly so we want to have the existing plasterboard/stud walls removed, remove the dividing stud wall and then open it up to use the full size of the original garage. Then have the front area of the garage (where the existing up and over garage door still remains) bricked up and a window installed.

Obviously then have proper insulation installed, Celotex etc, and then re-plaster boarded.

The first builder we have had come back with a quote for £8,400! This doesn't include having it 100% finished as I have requested it's left ready to plaster as I have someone who can plaster the room for me, then I can fit the coving, skirting etc then paint/decorate.

Does this price seem a bit high? Interested to know if this is the “going rate” from anyone on here who may have had similar work/garage conversion done?

Thanks

 

[freddiemercurystwin]

Get 3 quotes only way to be sure, I'd expect £5-10K

 

[richjamesw]

hi, i managed to do this myself, i converted the back 2 halfs and left the from in its original condition. Im only a diy novice no professional. I got someone in to do electrics and plastering but the rest i managed to do myself. I put in a timber floor on dpm filled with celotex then battened walls out over celotex and platerboarded. It must of cost me max of £1000 in materials. I did enjoy doing it but took a while.

 

[freddiemercurystwin]

hi, i managed to do this myself

So hardly relevant to the OP then!

 

[richjamesw]

hi, i managed to do this myself

So hardly relevant to the OP then!

well it is if the guy wants to save a few quid and do it himself. i got a few quotes before going along the diy path and they all came up along the 5k mark.

 

[stiscooby]

hi, i managed to do this myself

So hardly relevant to the OP then!

well it is if the guy wants to save a few quid and do it himself. i got a few quotes before going along the diy path and they all came up along the 5k mark.

I know what your saying but I don't think I have the DIY skills for doing it all myself.

Originally my Dad was going to be doing the main work for me but unfortunately he has recently found out he has cancer and after 3 months of chemo will need to have quite a major operation which means he will no longer be able to do manual work, hence the reason for starting to look around for a quote to have someone do it for me.

But, at the same time I'm not going to pay over the odds for it to be done. It's only going to be a TV type room.

The builder quoted for using Celotex PL4000/PL4065 for the walls and from what I can gather this stuff is jus dot n dabbed onto the wall (not sure if batons are used) as the plaster board is already attached to the insulation, so surely saving himself even more time?