Your local building official will tell you that ANY change of use to a dwelling or other habitation or human occupancy may require a certificate, regardless of what the building was used for or how long ago it was built.
Modern code regulates most changes to existing structures.
As long as the owner has a temporary certificate of occupancy.
You would generally submit an application for a building permit to make a change from residential to commercial, if there were any changes required for that type of commercial occupancy. Otherwise, you would simply apply for a permit for change of use and obtain the necessary inspection and certificate of occupancy for the commercial use. Depending upon the location and local rules, you may be prohibited from changing residential to commercial of various types, absent a "waiver", known as a variance, after a public hearing and assuming the local rules allow it under the circumstances. Just because you own some property does not necessarily mean you can use it for whatever you want. Zoning laws carry out the police power to regulate land use for the health, safety, morals and general welfare of all.
yes
You can obtain a certificate of occupancy -- if there is one -- at your local city hall.
commercial cooking: cooking that is not residential (i.e., not in a single dwelling unit). Also exempt is cooking using only residential equipment in an approved operation not in an assembly occupancy, with the necessary fire extinguishers available. There is no specific definition for "commercial cooking" within NFPA 96.
Occupancy permits apply when you change an occupancy or change a structure. If there is no change, the prior occupancy permit would apply.
A certificate of occupancy is a document which is issued by a local government which declares it suitable for occupancy. Being suitable for occupancy is decided by inspecting the building to make sure that it meets requirements for local codes.
yes
bhagwata dhakla
Generally, the local building department is the entity authorized to issue certificates of occupancy.
no it will not
business license, certificate of occupancy, business organization, registration of business name