At Steve Hill Construction Consulting, Inc. (SHCC), the ultimate goal of every project is to improve the client's situation. Since the client is most concerned about results, our fees are based on the value of the results we deliver. Therefore, whenever possible, we propose fixed-price or unit-based fees. This is established up-front and is based on discussion with the client.
There are times when the scope of our involvement may not be possible to predict, so time-based billing becomes necessary. But even then, the rate is based on the value of the work performed - we don't think that $350 per hour is a reasonable rate to charge for driving a car, unless there are checkered flags involved.