With Cabinet meeting today, English told Breakfast that experience in other natural disasters showed it was important to provide early support to give people "confidence and direction".
He declined to estimate how many houses will be condemned as a result of the flooding.
"But from standing there looking at it there are any number of them that simply won't be recoverable ... I just saw a lot of houses where there was water up to the windowsill, in some cases it has been up to the roof line."
Some residents are being allowed back into their properties this morning, but it is limited to just a few dozen homes. Locals from 46 properties along Hydro Rd, Nikau Place, Miro Place and Konini Place are allowed back from 8am.
Ministry for Primary Industries Minister Nathan Guy will tour the flood-damaged region today.
After the November 14 Kaikoura Earthquake, the government set aside $12.5 million for a business support package, which gave $300 a week per part-time employee and $500 a week for each full-time employee.
A support package for the primary sector of at least $5m was also pledged, and in February the government announced an $870,000 support package to promote tourism in Kaikoura and other upper South Island districts.