When using an appraiser it is always possible to hire someone that is recommended by the lending institution. Typically the appraiser will work back into the loan amount, verifying that the value of the property is at minimum what you are requesting.
Think through your reasons for wanting a home equity loan. Some reasons are better than others with refurbishing, upgrading and repairing the home some of the best, while paying for a vacation or using the money as an investment or general living fund some of the worst.