I held off using the address overlay on these houses (I used it for the rest of the survey) as I'm debating the best way to tag them. The address of these houses is 1, 2, 3, 4, 5 Church Cottages, Badshot Lea Road, Badshot Lea.

I'm leaning towards it needing to use the substreet tag, which isn't supported in StreetComplete: https://wiki.openstreetmap.org/wiki/Addresses_in_the_United_Kingdom#addr:substreet,_addr:street_&_addr:parentstreet

Another option could be to just give each house a house name of "1 Church Cottages", "2 Church Cottages", etc. But that doesn't seem like the proper way.

1 Church Cottages is the house which the note is on top of (the one near "The Green") and the row of 5 houses are numbered in order from there.