If you have enough money available and the zoning is suitable, you can always build an addition to your granny flat. Some granny flat owners have made two story granny Flats out of ranch houses. You really are only limited by your imagination and resources. If you need help with visualizing what is possible, then simply check out available software packages for designing. It could be the constant electrical interruptions are the sign of an overloaded breaker. Degraded circuits in your system are other problems you could be experiencing. Or it could even be the small appliance that is past it’s prime. Keep in mind that these are the times when you might want to call the qualified electrician in to look at the problems. If you are having the same breaker tripping time and time again then it might be the simple problem to identify and fix. Safety should be your primary concern though.