Houses 1940 and down

[Enver Perez]

I am a new investor and i am in the middle of closing on my first house . I've been listening to the bigger pockets podcast and have read several blogs and I'm curious to know why most of the investors suggest to get house 1940 and up .... My house was built in 1900 and I will start heavy rehabbing after the closing which should be in 2 weeks Thank you in advance