I'm thinking about putting a mechanical chase in my home to connect the roof to the garage. The chase would contain the flue for water heater and furnace, and possibly a dryer vent (separate from flue). I'd also like a conduit for communication cables (satellite, internet, etc). I don't know if there are codes I need to be aware of, and this type of thing is hard to search for on Yelp.
[EDIT] I'm defining "chase" as a type of chimney or shaft. Honestly, I don't know that I'm using the word correctly. My water heater and furnace are in the garage, which sits underneath the main living area. Both appliances are gas and they share a flue which goes from the garage (think basement), up through the main living area (in a closet surrounded by drywall - no access), and out the top of the flat roof. I would like to move this about 3' so that I can make the corridor/chimney/shaft/chase bigger, and add a dryer vent and some conduit for cables.
Would any general contractor be able to do this, or should I look for specific labor? Is this something I could DIY?