window in wall where there isnt one

hello guys, anyone out there who could give me some info about cutting a hole in a gable wall to fit a window? got the window, just need the hole.

And permission from the council

I installed 3 such windows around 3 years ago as part of a major refurbishment; 2 were installed at 1st floor on a gable end. Holes were cut using a great, MF, 12” petrol driven diamond disc cutter; very noisy, very dusty & can be very dangerous in inexperienced hands. But they are extremely efficient & it takes just minutes; both openings were cut & new lintels installed in under 2 hours & they were inspected by LABC before lunch. Openings were 1200mm wide & didn’t need propping as loads were insignificant & no bricks were dislodged from the top courses. New windows went in after a few days giving the mortar a chance to harden.

As has already been stated, you may need planning permission & the work is is notifyable to LABC; you will need to comply with several specific Building Regulations & LABC will want to inspect the new opening, cavity closers & the lintel installation BEFORE the new window is fitted (fee involved). You will also need a compliance certificate at the end of it or the work will be classed as non compliant building works, causing problems when you come to sell.

thanks for the info boys, got a few calls to the council before i begin then.cutter sounds interesting . thanks again