How much are the fees when applying for residency for a parent?

Generally, the USCIS filing fee for a Petition for Relative Alien is $420 and the USCIS filing fee for an Application for Adjustment of Status is $1,140. Beyond those fees, the beneficiary will need to pay a fee to the designated civil surgeon who prepares the required Report of Medical Examination and Vaccination Record. The foregoing contemplates a U.S. citizen age 21 or older sponsoring a parent who is in the U.S. for the adjustment of status application process to become a Lawful Permanent Resident (to get a "Green Card"). The application forms as well as the required supporting documents for the adjustment of status process can be significantly more complex than they appear. Errors or insufficient supporting documentation can cause delays or even more harsh consequences. It would be wise for you and your father to consult with an immigration attorney who, after learning all of the relevant information, could advise about eligibilities, options and strategies to attain your goals, and who then could offer legal representation in the application process.