A plumber like any other technicians should be trusted. This is because when you leave him in your house or in your compound working while you are away, there are some valuables you leave at home or maybe your kids are there and you need everything to be safe. When working with a stranger you will always feel uncomfortable throughout the project. Make sure you get enough information about the people you are working with in case you need to track them. Make sure everything is left in good hands.
The cost of the project should also determine the person you are working with. Always consider the companies that use flat rate pricing system. This means when the technician comes to your place and checks what the problem is, there is a price list which they use to quote. Most of the companies have the price menus for various repairs. This is better since it is equitable and cheaper than other means.
The cost should not be always a considering factor though it should be fair. Always ask some questions why the price is above others or lower before coming into a conclusion. One technician may be more expensive than the others but you may trust him more than the cheaper one. Consider the ones you trust in order to safeguard your other valuables.
Also consider working with a registered company. Dealing with registered one is more advantageous than dealing with an individual. The reason behind this is that when a company is registered it has skilled personnel and their work is done professionally. Also the issue of trust has been sorted since with a registered company there is some guarantee that your valuables will be safe.
It is also great to consider how long the company has been operating. Check with their previous clients how they completed some projects and their prices too. Good and reputable companies last for long and they have already made a name for themselves while disreputable die away faster.
Check the duration to be taken to complete the project. The project should take a reasonable time. Various companies will take different duration but consider the company that takes a fair amount of time putting other factors into considering such as cost and trust.
In this modern world companies are interacting with their clients online through social media like Facebook and Twitter. Check these pages and you can tell how most of the customers are commenting. It will be easier to know a good company and a fake one.
It is also good if the plumber is recommended by your friend or your neighbor. If the plumber had worked for someone else it gives you advantage of trust, cost since it is a referral to a professional. When a colleague recommends someone to you it will be obvious it is a good person. The other people you can ask for recommendations are the technicians you have worked with. Technicians like electrician, carpenters or any other can propose someone for you.