Initial rather rough discussions are usually very superficial.
As soon as it gets down to the nitty-gritty, it looks different again.
We signed our financing last week, have more income, significantly less loan amount, completed child planning, and still had to prove every little detail.
We only declared painting and flooring as our own contribution and estimated them at around 10k. The bank (ING) already wanted these 10k proven as equity, and for all other things (outdoor facilities, extra electrical costs, etc.) we were also supposed to present the offers.
For example, I don't know how it is supposed to work if you plan a lot of own contributions.