Blocking up solid wall

[Jack07]

I've moved into a house with an old first floor external doorway that has been changed into a window. It is half glazed and half upvc panel.
I want to block up the lower half and fit a new upvc window above.
I believe the wall is solid stone construction.

Would it be a straight forward job of using blocks to build this up to the required height?
Would I need to 'tie' the blocks into the existing wall using masonry nails or even a wall starter?
Is permission/regs usually needed for reducing an opening size?

As you can probably tell I'm no brickie but will get someone to match in the exterbal render.

Cheers

 

[oldbutnotdead]

First floor external doorway? Was it a fire exit?
Anyway, unless the place is listed or in a conservation area then crack on. Always a good idea to tie new walls to existing, starter plates probably overkill, fishtailed frame cramps would be a decent bodge for that job.

 

[Jack07]

Thanks for the reply

It was the old staircase entry but has since been moved due to an extension.

Cheres