Well once you have your permits and the house is free of lead paint. absestos, all that stuff you have to disconnect the water, sewer, eletrical, and gas is applicable. The oil tank if it has an oil tank has to come out before any demo. Then start taking the house down. Like said in a previous answer start with the top and push in so you have little clean up work by hand. I used to leave the chimney standing and took it down after i loaded the demo because its a lot more money to mix the brick in with the demo. Then load out the chimney bring it to a dump. Next is the foundation, if its a fieldstone foundation you can probably bring it to a concrete company who will use it to make concrete. If its block bring it to a crushing company. Next comes the site work, but we'll wait to give you a step by step process on that.
P.S. try and crunch the demo up as you go so youll have less air pockets and be able to fit more i the demo trailer.

00psd1 said:
From what I understand Floor tiles, mastic, roof tiles, siding, drywall, plaster, carpet, carpet pads, all have asbestos in them.

Well yes and no. It all depends on when the structure was built. Some drywall and joint compound still have asbestos, but at acceptable levels. This is why you need to have a "Good Faith Survey" done on any structure that you perform work on. I would not do any work on a structure without one. Some if not all landfills will require this before you can dispose of materials at their site. Yes asbestos can be found in 9x9 floor tiles, mastic, roofing materials, and siding. Don't forget pipe fittings and some plumbing fixtures undersides are sprayed with it. It can also be found in ceiling tiles and glue. That is why you should get a survey done. If the owner/contractor refuses to get one because of cost, walk away. It's better to lose the job then to get huge fines.

So lets say I remove the Mercury and Fluorescent Light Bulbs. How do you go about removing the lead paint and all the asbestos products?

You will need to either have a certified professional remove the material or get certified yourself. I would hire someone that is already certified to remove the HazMat.

Where would those hazardous materials go?

Leave that up to your subcontractor, but make sure you get all related paperwork to cover yourself. But in answer to your question, there are some landfills and other related centers that can take hazardous materials. Remember to check with your local laws; in some cases you can't even haul hazardous materials.

Wouldn't I have to take out all the hazardous materials first and then discard of them properly and then I would be free and clear to knock down the house with a excavator?

That would be correct with the right permits!