The most important thing is to have a viable water supply. Whether you're a stylist, nail tech or esthetician.
This is my home salon. I love it. It cost us around $500-700. It was the best gift EVER! I keep the heat vent closed, use lights when needed. I save a ton in gas!
I must tell you that on the cover of this guide is a refrigerator we found at a garage sale. I used black duck tape to change the color! LoL, boy am I cheap!