More specifically, I've heard of people who own 50' lots and work out deals with builders where you effectively "give" or sell half the property to the builder to build a duplex on, and in exchange you get half of the duplex and they sell the other half. I haven't run any numbers for what this looks like, but has anyone done this or heard of anyone that's done this? Is there (much) incentive for the land owner to do this, or are there builders providing any sort of incentive to go in on a deal like this?
I see that the builder isn't tying up their cash in land, but is there any more incentive for them to do this? Are you as the current land owner going to get any incentive from the builder to do this?