How risky is a HEL/HELOC?
It is rather risky, I’d say, because it is secured by your home equity. Should you default on your payments, you can lose your home. But the purpose of HELOC is not to deprive you of your property; it is to provide you with some funds when needed. If you make sure that you understand how this mortgage works and do not give in to over-glitter-smiled conditions being pushed on you, you should be OK. Just do not tap into the equity too much.
Other risks to bear in mind, especially if a HEL/HELOC is your second mortgage, are: disqualification from a third loan; serious financial complications if you happen to have to move before the mortgages are paid off.
For more details read Second Mortgage.
And remember - a lot of people use HEL/HELOCs and are happy with the benefits.
