Cost of installing a window?

[misslideaway]

We are in the process of buying a 3 bed house with a downstairs bathroom. We plan to move the bathroom upstairs by making 2 of the bedrooms on the back of the house, smaller.

Our newly created room will not have a window- and we dont like the idea of not having a window.

So I would like to know how much you think it would cost to install a new window. It would not be anything grand - just a single casement window.

Have you either had this doen yourselves? Or are you a builder? I would just like a rough idea of cost.

Thanks!

[The Builder]

What's the construction of the wall Missie?

[tamborine]

bay & 4w = 5 cost £2k. That's £400 each? Dble glazed. Think I've been done!