Those people who can afford it should install a home flood control system.
I think it's time for many people to start doing that to manage the water, I don't understand why are those burgeoisies and other upper class neighborhoods just letting their house submerge in high amount of water. Those damages can cause costs more than the installation, it's such a waste and it can also be dangerous kapag naabot ng tubig yung mga sockets, light switch, and other electrical things. It's even better if those who lives in subdivisions coordinate with other homeowners to plan and invest para mas affordable or kahit yung mga simpleng pumps and barrier gates lang to prevent it from worsening.