Got an estimate to replace a septic tank and lines that others who may not know anything at all tell me the price is too low. The house will eventually have 6 bathrooms, but only 5 people will ever live there. Straight forward install, no problems with perc and lots of land to run leech out to. What is a reasonable price? The backhoe guy will already be on site moving water lines and gas lines etc.
I would imagine that giving the latest state of the economy, a very low price would not be a suprise at all.
That being said, there is no way in hell to come up with a "site unseen" estimate. The soil conditions, landscape, location around the home, local codes and permits, environmental impact reports and materials (concrete versus plastics), there would be no way in hell to give an "over the phone" type quotation.
FWIW, I had one quoted here in Santa Clara County in 2003 (before I bought my current house) and the price was to "replace" the old system which had been abandoned for 3 years, the quote was for $26,000 and was "all inclusive", meaning no suprises.
This system was in a hill and was going to be all concrete tank and PEX piping with a 50 year warranty..
BTW that was considered "stealing it". There was over 180 hours of just backhoe time in the job....

GT