I can't really speak for the FFM area, we are building with an architect near Bremen. But what took the longest was the bidding phase. You can really tell that the market is currently flooded. Some didn't even send an offer, and for some the architect had to make many phone calls. We also didn't have three offers for every trade, but we could count ourselves lucky to have at least one for the foundation slab. (He also did very good work) So my conclusion: yes, it will definitely take longer. You won't get far with completion deadlines if things are already stuck beforehand. Our craftsmen aren't dawdling though, there is almost always someone there.