Hello everyone

I am having difficulties understanding how investors can get more financing after the first or second property. I am not talking about coming up with the downpayment but rather regards to mortgage affordability.

If I wanted to buy a second property with the same household income, how would it work? It seems that a lot of investors are buying a lot of properties with refinancing, but I don't quite comprehend how they can just add more properties (given that they do have the downpayment) with a similar income.

If would be very appreciated if I can get some clear answers to this. Thank you and happy holidays!