Hey, a lot of these do look like they're semi-detatched houses, common in these kind of residential living areas. If you want to add a bit of extra detail, you can usually use a fence in the backyard to identify where the split between the two is, and map the two houses separately (with the one wall joining them together) if you want to. Don't feel obliged to, but it's a handy way to add a bit of extra detail!
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            Published using OSMCha: https://osmcha.org/changesets/174046445
            