bimr, I understand your comment, but don't necessarily agree with it as a blanket policy. I do a lot of residential work for homeowners and architects for stormwater, septic system and other site-related issues. If I'm going out to look at a property for an architect or other professional I've worked for on a multitude of projects over the years, then I never charge if they don't get the job unless they tell me up front to charge them regardless of how it goes (a rare occurrence, but it has happened).
If a homeowner calls me to find out "how much does a septic design cost", I'll give them a range, tell them what additional fees to expect and then if they're still standing I'll follow up with a written proposal, no charge of course if they don't hire me as I did no actual work for them.
If a homeowner calls and describes a problem to me where I actually need to visit their house/property, then I tell them their is a fee for that initial site visit, never less than $150. About half decide they're not that interested or mention another engineer that didn't charge them for the same thing. I don't work for them because they're just calling around either (1) trying to find the lowest price, or (2) trying to get free information. #2 happened constantly the first 10 years or so I was on my own before I was comfortable enough to require a fee.
Now, when I do go out and meet with someone, they're getting the benefit of meeting and talking with an engineer. For residential work, when meeting with a homeowner, there's just no way I can go meet with someone and not educate them in some way about the problems they're experiencing or the design work they need to get accomplished.
Do I end up charging these people if I don't do anything further, or if they hire someone else? Not usually, but when I do they have always paid and they don't complain about it. If I end up getting the work then I'm always compensated for that time. These people, though, are all serious about discussing their project with me and understand that there's a benefit to them in paying me to come out. And frankly, when I don't charge them, they remember that and appreciate it, and it often gets me other work down the road.
The thing is, is I'm in a small town, surrounded by small towns (1000-5000 pop.) and I work alone. The firms with 5-10 employees and more all do the free proposal thing. Personally, I use it as a way to cut out some of the chafe that I'd just be wasting my time on. The other thing too, is I only work hourly, I very rarely work for lump sum fees. So I do like to have the ability to charge when I'm working. And as I said earlier, I believe there's a distinct value to my time spent meeting with someone and discussing their project. Also, with the permitting requirements for site-related projects these days it has become more and more difficult to accurately estimate the time needed when there might be multiple permits required for a simple residential project.