What is a residence permit based on special circumstances?  

A residence permit pursuant to the Danish Aliens Act, § 9c, Section 1 can be granted due to special circumstances, for example with regard to family unity or, if the applicant is under the age of 18, with regard to the best interests of the child. 

Applications for residence permits pursuant to the Aliens Act § 9c, Section 1 are processed by the Danish Immigration Service. 

The residence permit due to special circumstances is temporary, and few people are in fact granted a residence permit due to special circumstances in Denmark.