There are many factors that need to be considered when talking about GPS accuracy and the location determinations.
First of all you need to consider if your Tracker is outside under clear sky or if there're certain objects blocking GPS signals from reaching the Tracker. This is essential for answering your questions.
Having the device indoors can lead to location spots on the map that are somewhat near your home but not exactly pin-pointed at the exact location.
In the screenshot below you see a busy GPS track of a Tracker in Live Mode which was placed in a parked car.
(You might guess the right parking spot due to the density of a certain area.)
Information about the general accuracy of the Tractive devices can be found here: