Tim Chester lists several differences between House Church meetings and Missional Communities. Read them over. Are there any missing?
Community
House groups often tend to be a weekly meeting. People talk about ‘house group night’ – the evening in which they ‘do’ house group by attending a meeting. A missional community is about a shared life, a network of relationships, a genuine community of people.
Bible-centered
House groups are often centred around a Bible study. The Bible is central to the life of a missional community, but the Bible is read, discussed and lived throughout the week in the context of a shared life.
Pastoral Care
House groups are often insular and focused on the mutual care of their members. Pastoral care is a feature of missional communities, but they are also groups with a strong sense of mission. They can articulate their vision for mission and identify the specific people they are trying to reach.
Leadership
House groups are normally managed centrally by the church leadership. Leaders are often fearful of house groups becoming independent. Missional communities are given a mandate to reproduce organically or spin off into church plants.