An average pool usually yields about 10,000 on an appraisal if the home is in the mid-range on value. In a small house where pools are not the norm in that neighborhood, you may get $5000 or it could even be a negative. In a super nice neighborhood with a REALLY nice pool, I think you might get $15000 to $20,000--and I'm talking about the kind that comes with the super duper outdoor kitchen with high end built in features, but you will NEVER get back what you put in on a pool. I hope this helps! I even had a house have trouble appraising this year because they were getting a government loan (USDA) which would not allow them to add any value for the pool at ALL when determining the value for the loan...and our pool (not in a typical pool neighborhood) was given $8000 of value that had to be made up elsewhere.