This is a very interesting situation you have. There are a couple of questions that I think you need to address. The first question would be what would the City of Fremont require for permits and fees? The property could be considered a "Landmark Property of Historical Significance." Once you obtain this information, then there are housing dismantlers that can come in and give you an estimate for demolition. Since this is there area of expertise, they could also give you an estimate based on items that could be re-used, refinished and/or re-sold. I would suggest you get at least three (3) separate estimates.
The next question I would ask you, is what do you plan on doing with the property once the structure is demolished? If you are thinking of selling the "lot", you have the option of selling the property with the existing structure intact thereby leaving the responsibility of demolition to the Buyer.
I hope this information is of benefit to you. If you have any other questions, by all means let me know.