Interesting concept, but tricky on the housing perspective, have not read the book so these things might have been addressed already.
For example, will we need to buy more expensive insurances to avoid losing our homes, i.e. not be able to pay those taxes? How do you value your home, or your parents homes? Including…
There is a code generator included in the vscode solidity extension and console http://nethereum.readthedocs.io/en/latest/nethereum-code-generation/ but this is for the “normal” Nethereum not the Unity3d one.
A new code generator is being created at the moment which will include the Unity3d specific output.
Dmitry Polovaikin feel free to pop around the gitter channel for help https://gitter.im/Nethereum/Nethereum. It seems that you have done everything correctly, it is literally the same code as per the BlockNumber.