How often do people in a house church get together
There is no set number of weekly gatherings, but we encourage all followers of Christ to meet as regularly as possible. (Hebrews 10:24 and 25, Acts 2:42 to 47, and Hebrews 3:13) Each house church is different and operates independently. Therefore, each church will differ in how often they meet. 
Does a house church gathering happen at the same time and place every week?
Most house churches try to gather at the same time and place each week to maximize participation. However, house churches have great flexibility and can plan things according to the need of those in each house church.