Roof connecting, can rebuild?

[onben 0]

Hello, I am looking to purchase a property and came across houses adjacent to each other as below. Zero experience and hope to get advice here. Can tear down and rebuild if the houses are joined as shown in picture?

[petetherock 13]

Yes, that’s how intermediate terraces are rebuilt 

your builder will know the sop, including taking photos, permits, legal, bracing etc

[snoozee 98]

Yes. Most old landed houses except detached houses are built like this. Just tear down your side and after that the proper flashing is done up for the neighbours so won’t leak during rain