The big question here would be, are there going to be any iconic scenes that occur in the show that people would expect to be in a house, that don't happen in the game.
On top of that, they would have to tread a line very carefully around likenesses. Anything seen as presenting something akin to its look in the show, rather than the game, is ripe for cease and desist.
So, Joel and Ellie would have to look more like their game counterparts. Logos, sets, etc would have to be carefully designed to make sure they don't step on toes.
Is saving a chunk of cash really worth hurting a relationship that could bring other popular properties?