I think you can insulate your self from the 'hood issues via third party management.

All the insulation under the floor and around pipes and duct work was torn off and spread around.

@Kyle K.No insulation in the exterior walls?

and is your insulation proper?

Unless they are things like energy saving appliances and bulbs, better windows, plugging insulation leaks etc...

take pictures in case they ask you to open up walls. this way they can see that you have insulation behind those shower tiles.i rarely pull permits, except for roofs. they can see it's pex, so that's hard to hide.i have no problem pulling permits, but they do not allow ME to pull them. so i have to hire a person with a building license.

It is not knob and tube, but it is tinned copper, a real rubber insulator and then cloth covered.    

It needed everything; plumbing, electrical, HVAC, roof, windows, insulation, drywall, flooring, all new fixtures.I had to remove the entire second floor and rebuild it; 2 bedrooms and 1 bathroom.

I'm evaluating a potential deal in San Diego and the property has a ~600 sqft addition to the house which the listing agent says may not be permitted; the agent was of no further help, didn't even offer to find out for me.The construction of the addition itself looks good - it has insulated walls, electrical outlets every 6 feet, minimum 7' height, etc...

It's a 1978 mobile home and insulation is very bad, so I feel somewhat responsible to offer a more cost effective heating option.