Builder/Joiner rough quotation please?

[Stevenj214]

Could any builders/joiners on here give me a rough costin on creating an office space on the far wall the width of the toilet block and extending maybe 12foot please?

[ColinM50]

Googling office partitions throws up several companies selling prefabbed systems with prices coming out about £150 per linear metre run. So looking at your photo, say 6m comes to £900 plus what a day's labour? Or two if you want a ceiling. Add in stuff like power sockets and I'd reckon £1500 tops.