Some of the larger jobs may be too large a scope for a handyman, but that is why a free estimate and consultation should always be provided. Most handyman repair professionals will not touch a job involving the structural integrity of a building or attempt a major electrical trustworthy drain leak repair due to liability. The risk is too high and safety should always be paramount.
If you ask and don't receive a copy of worker's compensation and liability insurance, don't use the builder. You may even go as far as to call the agent listed to verify that their insurance is in force. Finally, remember worker's compensation protects people. Liability protects property. You need to have both.
The next step is to drain the local water heater repair service system so that the water stops flooding the home and causing more damage. You do this by turning off all of the taps in the home and flush the toilet. This will help the water drain from the pipes much more quickly. If there is water coming from the ceiling and causing a bulge, you can make a hole in the bulge and hold a bucket under it to catch the excess water.
If you live in a small community then there may be a plumber who will do 'out of hours' emergency plumbing repairs without charging a massive call out fee. A plumber that is willing to help his neighbours out in times of need is worth his weight in gold.
Last but not least is don't hire someone just because they gave you the lowest bid. Next don't hire some handyman that does odd garbage disposal jobs, in some cases they can cause you more problems that down the road it will cost you more money to fix what these handyman broke or did wrong. Sometimes the lowest bid is going to cut corners and not do the job right or when they get there and start doing the work, they keep saying they are finding more and more wrong and you end up spending more than what you should have.
Many people do run away from getting good and reliable air filters on the premise that it's quite costly. However, the cost of acquiring a device like this to help you get rid of dust, smoke, odor and so on is far less than the cost incurred in maintaining a clean environment in the home. Also, if you're properly informed, you won't have to break into a bank before getting a good and reliable air filter.
Finally, at the beginning, take the time to get quotes from several plumbers and potentially on non-emergency, lower cost jobs. Get a feel for the plumbing company and see how well they fit with your needs. Meet the plumbers in person. Then, when an emergency plumbing problem arrives, you will have a much better solution when time is of the essence.