Why do you want an average rate? You should want a rate that makes you money. The only way to achieve a profitable number is to do your own homework. Add up ALL your costs (equipment, tool, vehicles, insurance, gas, repairs, taxes, professional fees, licensing, phone, internet, labor, depreciation, damage claims to name a few). Believe or not these are all costs are real and you will be paying them. Then physically look at the job. See what is involved. Are there any special rules that limit your work day/ week/ month? Any special licensing? Do they have materials on site? What is the invoicing procedure? Determine how many money making tasks you can do in a day, week or month. Make sure you consider non-working holidays, weather related delays, sick days, etc. Then divide the costs by the number of tasks you can do and you will have your break even price per task. Now the most important thing is to add in your profit margin on top of the break even number. If someone bids lower, don’t worry because you have done your homework and you know they are losing money. After all I don’t think you are doing this for the fun of it, rather you want to make money, right?