^^^ there are probably no end of custom drapery people in the bay area, but be prepared for sticker shock. For our LR we needed 50 yds and fabrics we liked was in the 150/yd range. Plus 4K for the work.
For three windows.
We did use The Shade Store for cheaper velvet in our bedroom, but they couldn't get the length right and remade them four times. They finally asked, "if we give you all your money back will you go away?" Sure.