The bank doesn't even know where your property comes from and it doesn't care if your name is in the land register. This counts as equity capital regarding the loan-to-value ratio.
Many real estate agents calculate the construction costs = market value for the offer. However, this calculation is incorrect and every bank calculates the market value and thus the loan-to-value ratio differently – local banks are often better in this regard because an accurate market assessment is possible.
Yes sure, not equity, but the market value of the entire property (?). I just find it curious, since the banks sometimes don't take even 2 days for the decision - they surely won't read the construction service description closely.
You don't have to read that exactly either - key points like enclosed space and location are decisive. Standard values are used here - but this also varies from bank to bank.
Okay, thanks (even if off-topic again) - I had really assumed so far that the agent was telling me the truth :D But well - it worked like that for us. For the OP: ask the bank how they assess it - you probably can't say in general how the bank evaluates the property and the personal contribution.