More than 60,000 Aucklanders have rushed online to check the latest valuation on their property.
On average, homes across Auckland are valued 46 percent higher than in 2014, with the new data determining each property's share of the city's rates take next year. However a change in a property's value doesn't automatically trigger a change in rates.
When the previous revaluations were released, three years ago, the website crashed as people rushed online.
This time, the council made IT changes and did a test run, and said there were no problems when the valuations were made public at 9am.
See the new property valuations here.
The statutory process covers nearly 550,000 properties and is the biggest single local body revaluation in the country.
Auckland Council valuers said rising land values played the biggest part in the equation.
In Kumeu on the northwestern fringe, one house on a 1000 sq/m section rose in value by 30 percent, while an 8.5ha farm next door - zoned for future residential - rose by almost 160 percent.