Definition - What does Variance mean?
A variance is a small alteration to existing regulations or rules. This is particularly found relating to construction building and to altering regulations to suit specific builds. A person can attain a variance if they fall into a legal classification that would allow them to do so. An example would be allowing a home builder to add an extra foot to an extension based on where the property was located where a different property in a different location would not be able to alter the regulation of size restriction.
Justipedia explains Variance
A variance is something that is different than the norm or inconsistent with it. This can apply to any legal context such as a varying scale of sentence based on the complexity or seriousness of the case.