The builders should buy but Its most important to put it on the MLS as the price my warrant an independent homeowner as experienced builders are used to getting lots at much lower cost thru networking and banks.
Hope this helps.
I'd like to say the best/only way to do this would be to use an agent to help you. But, the market is such that you may not need to do that. You might be able to get by with what Chris is suggesting here.
I would caution you that, there are legal issues at play here, so make sure all of the appropriate legal issues are addressed in the proper way.
Pretty rare when a realtor says FSBO is the right thing to do, but yes I am saying it right now. You may think builders are just trying to undercut you, but in reality I don't think a normal buyer would be that much different. The cost to build is the same, so these buyers are looking at the 800's to see what the finished product looks like. $450,000 is just way too much. There is no room to build, which means the comps would have to be coming in at 1.2M or something. When I was looking a couple months ago that was not the norm.
Hopefully that makes sense. I don't know what you want to buy in Edina after this sale, but hey maybe new construction is what YOU should do hahaha!
Good Luck James
Sounds like you have taken some great steps forward already. The missing pieces are the marketing an experience agent provides, the MLS listing and follow through to get it done. Its too hard to go through all of that in a forum like this. Try it for a while and if you get stuck call.
Best of luck with this,