It depends on what kind of contractor you want to be (electrical, Plumbing, general, etc.) Each state has specific requirements for contractors regarding licensing, etc. This site can help you find the appropriate licensing agency in your state: http://www.contractors-license.org/
roofing
In the USA, it varies from state to state. Most states require you to have at least 4 years of experience and formal training; then be able to pass a test.
You will have to take a class, and a test to get your license.
You must take a test to obtain a california contractor license. There's a California contracting and license book that outlines the steps to obtain the license which can also be found online.
For a person to obtain a CA contractor license they would have to take some courses to qualify for an exam, when you pass the exam, a license will be issued.
There is no general contractor's license in Vermont. Asbestos and lead abatement both require certification, while plumbing and electrical work requires licensure.
You need to be a "Certified Refrigeration Contractor". Visit this site to see how to obtain a contractor's license in your state. http://www.contractor-licensing.com/state-license.html
You can obtain your general contractors license by going with one of the contractors schools
You do not have to have a license to paint houses. In order to obtain employment a license would look more professional and give you the opportunity obtain more gainful employment choices.
To obtain your license you can start by visiting the Texas Department of Licensing and Regulation, there you will find the necessary application. (this is also vilable at their website)
I get Electrical contractor license, so what can in do.. and what formalities for..
In Nevada, all individuals or businesses that construct or alter any building or structure must have a State contractor's license. There are some exceptions to the rule. To obtain the license, you must have experience and skills and complete an application together with a fee of $600. You can access the link to Nevada's Licensing Office by using the free website "Nevada Contractor Licenses Directory" where you can also access a "Contractor License Search."
Contractor license bonds basically say that a contractor complies with any local laws that pertain to his/her job. This can be for a general contractor, electrician, plumber, etc.
Whether a contractor can work under another's business license depends on the type of business license. If someone has a corporation then they can have a lot of businesses under their license.
RMO = responsible managing officer You need an RMO in order to obtain a contractor's license. You can either go take classes at a contractor's school or find one. Just make sure they are qualified!