We tend to require the services of an electrician at one point or another. They will handle simple electrical issues, as well as major electrical considerations. They will also offer emergency response services, as well as planned electrical projects. Their importance will show in so many instances in the house.
In any residential changes project an electrician is usually one of the professionals to be consulted. You need them to answer any electricity related questions in the project. No matter how big or small the project, they are critical to it. That is how there shall be no electrical catastrophes ever.
You can have them come and do fan and lights fixtures. They are better placed to ensure the installation of such fixtures is done properly and safely, despite how simple it may seem. Such fixtures play a role in the aesthetics of the structure. They are also determinant of the amount quoted on utility bills you will be paying. When they are not properly set up, you risk getting electrical shocks, or a fire in the house.
Some people still reside in houses they built a long time ago. Such houses will need you to have an upgrade in the electrical system. Over time, such systems also degrade, making an upgrade inevitable. As electricity needs rise, the electrical load will need a more competent system in charge of it. You cannot trust any other professional to perform such an important task.
There are also many inconsistencies in how we need electricity in our homes nowadays. This can lead to some serious power surges in the house. There has to be a skilled electrician in charge of the installation of a surge protection system. There are the usual surge protection devices readily available. You will still need an electrician handy to ensure the kind of surge protection you have is adequate for the entire house. They will install those at the main supply point, to keep the rest of the house safe. This will also keep your appliances in good condition, since the small surges tend to destroy them over time.
Electrical tasks are sometimes simple enough for you not to need an electrician in charge of them. It is however a good idea to always have a professional in charge of most of them. This is the only way you can be sure the house is safe. They will also ensure any jobs done are in line with the laid down local council regulations. You cannot sell a house that had not complied with those regulations in the past.