Any trustworthy drain leak repair flat floor is a good candidate for my scientific marble test. I'll drop my marble; if it rolls to a corner, that floor ain't level, Buckwheat. That's a simple test but I do want to know that the under-layer or sub-flooring is sound and firmly attached to all those joists, and beams and trimmers and blah, blah, blah.
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.
If the owner of the business isn't 100 percent involved in the business, it doesn't mean that you write them off but you should find out how the business is being managed. Quality usually has a direct correlation to the level of local water heater repair service involvement by the owner of the business.
You should also make sure the company you choose is careful when hiring. You do not want a plumber with a criminal record and very little plumbing experience coming into your house. You need to feel safe, and rest assured that the person you hire can get the job done reasonably well. This is why you should find a company that does background checks on employees, and only hires experienced, well trained people. Not every business does this, so you should ask the owner or check the website to see if this is mentioned.
If you choose to use gutter leaf guards, you save yourself the stress of cleaning your drain channels at least 2 times every year. And this is not an easy task to do. It requires a special tool and for you to water heater work standing on a ladder. This is time consuming, energy-sapping and very dangerous.
You definitely want a plumbing service that has access to any type of parts that a given job might require. If they do not carry them in their trucks, you want a worker that knows where to quickly buy them. Nobody wants a repair person spending the better part of a week trying to track down some special drain part. While a lot people do not consider this, it is very important.
Remember, there is a million small ways this is communicated. Company uniform, company vehicle, logo, website, slogan, elevator pitch etc. Get the details right, and make sure they are working together to create a consistent image. Ask for feedback from customers, friends and family, even total strangers if you have to. Ask them what they think of your logo - what does it evoke? What do they think of your company name? Objective, third party feedback is your best source of information on how the public perceives you. A good image is crafted slowly over time.