Refinance math

[Vincent Chen]

In order to build wealth and make money work hard for me,I am thinking about how to use the equity I build.

After I purchase the property,if the refinance LTV ratio is 70%,the value of property should increase about 40% to refinance all the capital invested in the property.And if the property appreciation compound annual 10%,it need take more than 3 years to get 40% increase.

If the property does not appreciate a lot,the refinance does not worth it at all.So I need to use the capital I invested in the property more than once,I need to choose the property which has al lot of property appreciation.

Anything wrong about my math?Any inputs are welcome,thank you.