Will a HELOC affect me getting a conventional loan?

[Mikael Lickteig]

Hello all,

I am in the process of getting a duplex/house hack that needs repairs. My mother has offered me to sign on to her HELOC at a 4% rate to fund the repairs. I will not owe anything on this line of credit until I actually pull money out for the repairs. Will this disrupt my my chances of getting a conventional loan for the duplex? I already have a high credit score, but does it create a problem with my debt to income?