We are in the process of buying a victorian street house mid-terrace but have just looked at the back wall of the 2 storey bathroom/kitchen which is at right angles to the main house. This wall joins to next door and appear to have a great crack between the 2 houses. Am I right in thinking that they were built like this as 2 separate walls. There are end bricks on every other row where they tie in. It appears that it is the other house that is moving away rather that ours. Is this a problem? It has been filled in previously with cement. This has also opened up and hence the new gap.