It's a toggle tick option in the iD editor. The default is "assumed to be no" so I just toggle it to "no". It's not a tag I'm manually adding and I thought surely it's better to be definitively no, rather than just assuming it?

Thanks! I've updated the tags as you suggested. I'm not 100% sure where the entrances are so have set the addr:flats subkey on the building itself.
changeset/56685721

Changed tags on old church building changeset/56654541

Added here: changeset/56552382

I need to verify the latest development area (marked as construction) for road names etc. So work in progress for now.

Not complete yet ;-) I will go through all the roads in this development and add those details.

Thank you to the previous editor who started the houses on Pottery Gardens. I am updating size/location based on latest satellite imagery and adding house numbers and missing features.

Thanks!

Fixed. Good spot!

It isn't. Don't think I did that (maybe I did!) but I will correct it. Just updating its junction with the Lune right now, so will add fix to that.

No problem :) It's my local area and was woefully missing a lot of detail, so I thought I'd help complete it! Still learning though!

OK. Thanks.

Planning permission details for first building on new campus: https://planning.lancaster.gov.uk/online-applications/caseDetails.do?caseType=Application&keyVal=OF1OI0IZLRI00

Area plan: http://planningdocs.lancaster.gov.uk/NorthgatePublicDocs/00878092.pdf

Have retrospectively added to some roads. Will add in future :)

Yes, I reckon so. Trench work has started and a contractor's car park has been created. See here for example: https://twitter.com/LHHub/status/956824911967932416 from an official Lancaster University Twitter account. Very early stages but construction has started.

Thanks. Will change the format. The number is correct, there are quite a few numbers with only five digits after the area code in this local area (i.e. the 4+5 format). You can verify this for this particular case by visiting their website :)

Ah I see. I had just copied the method of the next street over (Rays Drive) - which uses singular buildings and tags for semi-detached houses.

Yes, all detached/semi-detached tags are correct. I will look at squaring of the corners.