Snazy: do you have any photos of No. 14 you could share? I was talking to someone in Sydenham last week about an Earlsfield development there (one where they've taken the roof off and gutted out the insides) and she had been concerned about it and contacted her local councillor. She doesn't know what happened but not long after a lot more scaffolding appeared.

Given that, and what happened to No. 6, it should give a lot of weight to any request to the Council (Building Control Dept?) to look at No. 14.