Posts about the newly renovated houses 72 and 74 Foster Road are organised into three disjoint categories:

• 7x – information relating to both houses
• 72 – information specific to no. 72
• 74 – information specific to no. 74

The intent is that you can see everything relating to no. 72 by selecting both categories 7x & 72.

And you can see everything relating to no. 74 by selecting categories 7x & 74.

You could generate standalone sites for each house separately (for example, if you sell one of them) by exporting the appropriate categories as a new website.

An auxiliary category About is for information about this website, such as this post.