Is Jamaat allowed in home?

In my extended family, there r many boys (brothers), they rather do a jamaat in house rather than go to a near mosque. Not joining them makes me feel bad but it also makes me feel bad if I don't go to a nearby mosque. They have a certain reason of not going to the nearby mosque as the mosque doesn't do Salat-o-Salam and people tend to only offer fard so they think it is wahabi masjid