When an extention is built how is it joined to the exisisting property.

there are two ways of attaching a new building to an existing building if the extension falls on a corner every 2nd brick gets toothed out and joint like that,and the 2nd way of doing it is attatching a fur fix to the exterior of the old building and this has bars that attach to this that locks the new brickwork to the old

Buildlt is correct.

You can either tooth out the bricks or easiest option fit some furfix ties.

hi,, If you are taking these guys advise and they are all correct, please check the drawings asto if the cavity is to be continued into the new works , just thought i mention it ...