Yes!
In most cases yes. Always check with your agent.
Any building property policy such as a homeowner policy or commercial property policy will cover fire damage.
If the deck has not been maintained and falls apart the homeowner has to pay to get it fixed or replaced. Insurance does not typically cover such items unless the damage was a result of fire or flooding or some such catastrophe.
Usually your policy will have a section covering your liability as a homeowner. This may cover the neighbour. Check your policy ask your insurer
Accidental, Yes. Intentional, No
Most homeowner's insurance policies will cover fire and theft. Individual companies and policies will vary, so be sure you check with your insurance agent to verify if yours does.
The replacement of your boiler sound as if it is a maintenance issue and not something that could be covered by your homeowner's insurance policy. The damage would have to be caused by a covered cause such as a tornado, fire, vandalism, windstorm, etc. and I can't think of a way that it was damaged by one of the covered causes. Sorry.
No, but if the failure causes a fire or water damage, then the water and fire damage will be covered.
No, unfortunately it does not. Your homeowners insurance covers damage to your home. Your auto insurance covers damage to your car.
Sure, if the roof falls on it, or there's a fire. But it won't cover anything that happens on the road. Check in with your insurance agent. Most homeowner policies exclude damage of any kind to automobiles.
Some do but it would only cover fire damage for your property like your office. On some it is excluded. You would have to check on your binder
Yes, Homeowners insurance typically does provide coverage for losses that result from an accidental fire.