Any ideas about how could you simply build a house with weird geometry (a la Heinlein's), you could take some aboleth slime, pour it into framework, and throw its third eye into it. Then take a medusa's head out and voila, perfectly styled Azlanti house with an eye motif. Tough cast it from the outside cause the residents would get the weird feeling they are being watched. It would sell in Absalom, tough in Geb people would want the Black Blood from Orv instead of the slime for their haunted mansions.
I'm looking for more components to expand the company, other components, maybe ectoplasm, or some fluid from Numeria (warforged houses), slave blood (house gets an iron plating, fey-proof), living wall protoozes, then fomorian or cyclops eyes for that megalithic effect, or hag's if you want to use the evil eye curse on your neighbors?