You and your adjacent neighbour(s) co-own an equal share in the land (fee simple) and lease your house (termed “the Flat”) from one another.
Each flat owner holds a lease for their flat and their section which is registered on the title. The leases specify each flat owner’s exclusive use areas (e.g., the surrounding land, garages, car parks etc.) and shared areas (e.g., driveways, paths etc.).
It’s important to exercise caution when intending to purchase a cross-lease property as cross-lease titles may be defective.
The flat plan needs to accurately reflect the house. Any extensions necessitate a new plan. Alterations require the written approval of the other flat owner.