okay, then I'll try a calculation example:
The seller wants:................................200,000,-€
My cost estimate for the renovation...60,000,-€
My cost estimate for modifications........20,000,-€
Costs for the service phase according to HOAI.....4,000,-€
------------------------------------------------------
Valuation report.....................................140,000,-€
Negotiated purchase price........................160,000,-€
Financing........................................184,000,-€
of which 30% KFW 124...............................49,000,-€
of which KfW 152 energy-efficient renovation.....50,000,-€
KfW subsidy on service phase 431....2,000,-€
of which house bank....................................83,000,-€
-----------------------------------------------------
damit liegt der teure Hausbankanteil bei nur noch 45%
Ersparnis 184.230,- € - 153.295,-€ = 30.935,-€ nur an Zinsen
Gesamtersparnis schlappe 73.000,-€ zur Erinnerung der Kapitaleinsatz sind 2.000,-€