How to get a loan for the 2nd primary house which is cheaper than my current one

[Rafa King]

I am planning to buy another house as the primary residence and rent my current one out. The bank said that they won't do it because the new house that I can afford to is cheaper than my current home value. Several walk-around were provided:

1. New house is closer to my work: not possible as my current address is very close already

2. Better schools: not sure if it works as my child is still in private preschool. Does it also mean as long as any school (such as high school) is better?

3. I move out of my current house for at least 3 months. That way my current house won't be counted.

It seems #3 is the only viable option but I am not sure if the mortgage broker is right or not. Appreciate if you have similar experience or any suggestion. 

Thanks!

[Rafa King]

Quote from @Jonathan Bock:

@Rafa King

Is this about your DTI little confused here??

Correct. One rule of applying the primary home loan is that the new home price should be higher than the current one. My current house is at a lower interest rate and got appreciated a lot. Basically my income is not high enough.