Dormer cost?

[courtney2]

Hello all.
I currently live in a chalet style house, and the roof pitch is quite high and from the style of the house it makes the upstairs walls slopey, I was hoping to see if anyone had a rough estimate of a price of having a dormer fitted either side of the house around 3m long? So I can get the straight walls desired by everyone and also open up the rooms tad.
Many thanks

I'd say 15-20k depending on finish and access.

The access is fine as the dormer would be going on the side of an upstairs bedroom.
It’s not a total new loft conversion. Just opening up two bedrooms.
Thanks for your reply

I meant site access , as in can builders get supplies to where they need to ? Would they have to carry stuff through the house all this adds to the cost. Might be a bit less than 20k but it depends.