Rule of thumb for calculating affordable installments based on income

Good evening

Isn't there actually a rule of thumb for how high a monthly installment should be for a construction loan measured against the household's monthly income?

Many thanks for your advice

Hello Michelo,

there is no official rule of thumb for this.

Germans spend on average about 40-45% of their income on housing.

Another guide for the monthly burden amount for property financing can also be found in this thread:



Best regards

M. Thiemann