4 in my lifetime.
When i was 4, the family moved house. Our house ( a rented council house) was being updated. The tiny bathroom was down stairs and we had an outside loo! The bathrooms were being removed to extend the kitchen and a bedroom upstairs was being made into a bathroom.....but we needed 3 bedrooms do the council moved us just 10 minutes away, to bigger house and garden where i lived until i left home at 22. My parents later bought the house. My sister still lives there.
When i married, we bought a little but spacious terrace house in my husbands home town.....5 miles away from where i grew up. We lived there for 17 years then moved to our current home. Been here 18 years now.