I hired a local mason to erect a 38' brick chimney for me on the outside of the house. I tried to find a way to bring the chimney up through the inside of the house but the layout of the house framing prohibited me to do so. There were some obstacles in the way and I opted to save some money and do the following: 1. Excavate and pour the footing pinning the footing to the existing foundation. I also poured piers at the two corners of the footing to reach virgin ground. 2. Core drill into the foundation for the thimbles and cleanouts. 3. Move the downstairs Air Handler and re-pipe the plumbing/tie-in the ductwork. 4. Remove the combination vent (powervent) to the boiler and re-pipe the exhuast and intake. 5. Pull the siding off, install ice & water, and re-install the original siding.