I am muqallid of Ayt Makarem. I live in area where there is no Shia masjid in 10 kms. However there is sunni Masjid in next building.kindly let me know if it is recommended for me to offer obligatory prayers in Sunni Masjid? Or it doesn't have any difference in praying at home or Sunni Masjid?

masjid is better.
u go there and recite your namaz as u recite at home