Since inception in 2004, The Glass Guru has been a pioneer in window restoration technology, becoming the first US based company to offer moisture removal for failed dual-pane windows and significantly improving upon the process and technology in the years to follow. The company has also developed its own products for hard water stain removal as well as scratch removal for glass, winning the 2010 Glass Magazine Readers Choice Award for its products in the category of Glass Restoration.
Licenses are required for all residential building contractors Minnesota who contract with a owner of "residential real estate" to construct or improve dwellings by provinding work in more than one special skill
Permits on electrical works on their own property can be requested by homeowners through the page https://ims.dli.mn.gov/ims
Contractors who have a state license don't need to obtain a local license for work that is covered under the state licensing laws.