Usually there is a legal document involves, say Tenancy Agreement (TA).
Government can trace the renting transactions via Tenancy Agreement submitted for stamping.

Real estate agents also need to submit the rent and sales transactions to the authority every month. Everything is traceable. The next question is how strict the enforcement only.

TA protect the landlord/ tenants right with all the Do and Don't.

This post has been edited by cheahcw2003: Jun 29 2015, 01:44 PM