Doing a home appraisal can safeguard you from grossly overpaying for a property and prevent you from being is a possible situation where you need to come up with additional funds for a purchase.
Even though you have done your homework and have comparables, the lender will want to establish their own value of the home. Everything You Should Know About Home Appraisals written by Whitney Hutten, real estate investor and personal finance trainer, will help guide you in the appraisal process.