To the best of my knowledge unless you are with a fire sprinkler company you cannot touch a backflow device on a fire line. I can only test irrigation and commercial (medical, foodservice, etc) backflow devices.
I'm sure it depends on what region you are in. I keep hearing around here 100.00 a inch is the going rate. It makes all the paperwork worth it.
I am one of a few few (under 10) that test Backflows around here. And we have 100-150k people within 20-30 miles. Supply and demand? I guess if there were more testers the price would go down?
Scag, Exmark, Honda, Shindaiwa, Redmax. Commercial and residential Lawncare, Irrigation (LI and BPAT), and Landscaping. Fully insured.
Mikegyver Pics Thread
People pay you to hold their hand. If you don't like doing it, then you are in the wrong business.