I’ve had a reply from Dan who’s been away on holiday.

We are currently on track to finish on time in accordance with our schedule which will be the end of August. However, as usual, if any changes are to occur which may result in a later finish date, I will inform you so you can make that information know to the residents. 
Following on from your email, you would be correct regarding the processes that are upcoming to be completed.

The “Following on from your email” refers to me suggesting that what remained was :
– Connect it all up
– Test for leaks
– Test for water quality
– Finish off any surface issues

So hopefully Good News !