Yes we definitely see a major use case in public projects which are notoriously wasteful and (sometimes) corrupt. Blockchain allows provenance of the data and the ability to have a better view of where the money goes. The audit capabilities are major benefit in situations like the one you describe....We're putting together some official case studies and we will share them. One of our clients is a billion dollar construction company that is using 2 of our products. They anticipate we will save them $1M+ this year as well as improving the budget and schedule outcome on their projects. Construction has over 150 typical workflows so the results here are significant.
I assume a forward looking city could hook directly into your apis to process things faster.
By fair housing will become the biggest issue in the next 50 years or so.
Would love to see case studies where your shown to reduce costs by a significant amount. Good luck !