Active job

Replacing windows with double glazed

Looking for a builder to replace windows with double glazed, 2 people at the address who are willing/able to assist with this. Have had a quote (see pictures for measurements) but windows not ordered yet. Bathroom: 1 x small window, 1 x skylight, 1 x box window - need to have the inside wall built down lower to make it suitable for a double glazed window. Bedroom: 3 x windows. 1 door