With all the bargains here in the spec market & the 1-3 year old homes, I'd check out existing first & see if anything strikes your fancy.
How are things in Michigan? Have you sold your home? Let me know your plans & I can zip you a relocation packet or schedule a community tour upon your next visit.
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Most builders actually have had quite a lot of specials, but those have dried up some since the new year. There was such good deals out there in December I ended up buying a new home that was discounted well below what it appraised at, I have not seen those type of deals in over 10 years. Now that we are in the new year and new home builders don't have inventory to get off their books for end of year accounting, the deals have slowed down, but you can still find good deals.
I work with many new home builders, both for investors from out of state, as well as local buyers, I can usually get you a better deal then you would get going into a new home builder on your home.
At that price per square foot you must be looking at very high end custom construction. Indianapolis is currently one of the least expensive housing market of the major cities in the US. As an example last summer I had a client looking at a Pulte Home in Carmel that was priced at $400,000. His wife was in Detroit and he wanted her to see a model there. The Pulte rep and I did find the same home in a Detroit suburb but it was priced at $500,000. The builders in general are very aggressive at present . They want to unload inventory so you should be able to get a good buy at any price point.