Re: Answers for these types of customers
Engineers sometimes get this type of ?give me a ballpark? request. I try not to upset a potential customer, but I don?t think it is appropriate to make predictions of that nature. What I would prefer to do is to give a written proposal, with a price included. And I can do that sight unseen! But the proposal includes a clear statement of the scope of work, a list of assumptions (or call them ?unknown conditions?), and my rate for additional services, should any of those unknown conditions result in a change in scope.
Using your situation as an example, I would state that I would supply two workers for a period of XXX hours, and the price would be $xxx. That price would include basic materials only (wire, connectors, etc.). I would state the following as assumptions
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- <font size="2" face="Verdana, Helvetica, sans-serif">It is assumed that the existing ceiling boxes are rated for fans. There would be an added cost of $yyy per box, if they have to be replaced or re-mounted.</font>
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- <font size="2" face="Verdana, Helvetica, sans-serif">It is assumed that the attic area is readily accessible, is clear of obstructions (i.e., no storage items in the way), and is free of hazards. There would be an added cost of $zzz per hour, if access to the work area forces a delay in installation.</font>
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- <font size="2" face="Verdana, Helvetica, sans-serif">It is assumed that the existing circuits, devices, and wiring are in compliance with current codes. There would be an added cost of $zzz per hour, if any portion of the circuits being modified require replacement or updating, in order to bring them up to current code requirements.</font>
<font size="2" face="Verdana, Helvetica, sans-serif">I could list a few more, but I?m sure you can see the concept.
I might even suggest a minimum price just for showing up at the scene to do the job. Within a few minutes, you should be able to tell if there are serious problems, and to advise the owner of the probable increase in the cost of the job. If the owner then wants to cancel, then you give the owner a bill for "the minimum price." More to the point, you include this requirement in your standard proposal form letter, so that the owner can take it into consideration, before accepting your work proposal.