I had mine 10 x 17 finished up last month by Custom Windows of Leesburg. The cost of Windows and Doors for 3 "walls" (including installation and permitting) was $14,500. I had tile floor ($2300), mini-split AC ($3000) , exterior Coolaroo Shades ($450). I used Custom Windows of Leesburg based on all the highly favorable comments I've seen on this site. However, based on my experience using them I can not recommend them whatsoever. I had to get them to come back multiple times to correct a combination of poor installation practices and defective manufacture items. They finally got it done to satisfaction, but getting to that point took more persistence on my side than anyone would think should be necessary.
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