Unrenovated: Fantasy/Horror

It was unrenovated, the Realtor had warned them. He'd thought about not even bothering to see it, but the description of it had made Clarissa glow inside--the veranda, the old chandelier, the two-hundred-foot trees, the butler's pantry, the old icebox, the ballroom in the basement...the ceramic tiles in the kitchen. When they looked at it, they agreed that no, it wasn't renovated. They fell in love with it anyway. They knew that they would be sinking huge sums into it just to keep it running on a yearly basis--that's why the old owner had sold it, the Realtor confessed. She shouldn't be telling them this, she said, but they seemed like such a nice couple. He thought she probably just knew that--

Inspiration: "unrenovated"
Story Potential: High, though it's not such an original idea.
Notes: I could easily twist this to the horror that has been done so often before, but I think I'd rather not. I could make it fantasy. I kinda like the idea of using it as a dark thing that somehow balances the darkness in the owners--improving them all. Maybe murder's required, but maybe they're serial killers. Or maybe he's a wife-murderer, but the house brings victims back to life. Many possibilities. I think I like the idea of giving it a horror flavor, but have it end up uplifting.