From "Harsh" advice I've been given immediatly The rooms in Daniel's house have been shrunk by roughly 40%
Considering making them even smaller.
in an estimated guess level 1 is 37% complete (not including scripting)
2nd level construction begins shortly, The City of London (At least a couple of Streets)
You will be allowed to enter some buildings but it will not be required to progress.
3rd level will be where Daniel makes his final preperations to leave the city.
4th level and on still finaliseing the story.