Economists predict interest rates to be incredibly low. The old jobs are not coming back (fair to say) but decay is not an option. Mortgages will be plentiful because new industries, new skills and new wages and no place to live, coupled with 20 year mortgages and so low interest rates means $2 million for homes in established neighborhoods is reasonable. Every place will be like Hong Kong because of restrictions on sprawl.
That’s your retirement nest-egg. They might be out there trying to be ahead of the curve, so anticipate average prices to be $2 million and discount it for today.
That’s the worth of the futuristic city.