Homebuilders are desperate, as this new twist appears to demonstrate. They are offering to protect you
You must purchase a home exactly like your neighbors' on exactly the same size flat piece of property.
But wait. The legal footnotes for the KB Home price protection offer (see their web site) indicate that, "Price Protection applies only to KB Home's advertised base price for the same floor plan, elevation and model in the same community." In other words, you must purchase a home exactly like your neighbors' on exactly the same size flat piece of property. If you want the builder to, say, extend the master bedroom another two feet, or build a pantry into the footprint of the kitchen, forget about price protection.
Let's say that, for some reason, you are fine with an exact duplicate of your neighbor's house, then who gets into the peeing matching with the builder about the market value of your home, you or your lawyer? And how much extra will that cost? And if you and the builder disagree on the market value of your home at closing, is there an out clause that gives you your deposit back?
This promotion comes with more strings than Pinocchio. I prefer the free big screen TV, the extra homeowner warranty protection and a no thank you.