You do not pay Capital Gains Tax when you sell (or ‘dispose of’) your home if all of the following apply:
You have one home and you’ve lived in it as your main home for all the time you’ve owned it
2. You have not let part of it out - this include having a lodger
3. You have not used a part of your home exclusively for business purposes (using a room as a temporary or occasional office does not count as exclusive business use)
4. The grounds, including all buildings, are less than 5,000 square metres (just over an acre) in total
5. You did not buy it just to make a gain