"Homestead" means the real property owned by and in possession of the applicant on January 1 of the taxable year and upon which the applicant resides including, but not limited to, the land immediately surrounding the residence to which the applicant has a [...]

"Homestead" means homestead as defined and qualified in Code Section 4854048-5-40, with the additional qualification that it shall include only the primary residence and not more than five contiguous acres of land immediately surrounding such residence [...]