Im not sure if you need some type of contractors license, but I went there with my dad (a contractor) and I went to get some good irrigation (industrial strength) sprinklers since i have a rather large front and back lawn. These sprinklers are insane!! they reach so much further than sprinklers form Home depot or something. Prices are a tad higher, but so what, I love them!!! Also, bought drainage pipes, pvc pipes, glues, etc. Price adds up quickly, but wouldnt you rather want pro materials for a 20+ year investment? Great service as well, treat you like a good friend.