Here's a list of links to lute builder sites. I provide this for informational purposes, only. If you are thinking of purchasing a lute, then it pays to do research. I hope this list will help. Even if you aren't planning on buying a lute, it can be a lot of fun to look at the pictures.
Chris Allen and Sabina Kormylo
Stephen Barber and Sandi Harris
Sebastián Núñez & Verónica
I know this list isn't complete. Please feel free to leave similar links in the comments section.