Oil to Propane Conversion Cost?

[songkrai]

This is the original post.
The original post asks about the conversion from oil to propane.
The original post specifically states not the price of the fuel.

I would appreciate hearing from original poster after he/she obtain 3 quotes from 3 reputable heating contractors and state each price/quote.
Then a good debate could arise if this approach was good and cost effective.

Originally Posted by Overlake97

I'm thinking of converting my year-round home heating system from oil to propane, and am trying to get a ballpark estimate of what it might cost (the conversion, not the fuel cost). The house is 3000 square feet, with 7 forced hot water heating zones (one is the hot water heater, one is garage [Modine] and one is basement which we never seem to need to use). We're also looking to replace the hot water heater. The house is 15 years old and the current boiler is 11 years old (it was replaced due to cracking of the original). Any information on what this might cost, and factors that would alter the cost, would be greatly appreciated!