Six signs your town is about to revalue, and what happens to your bill when it does

A municipal revaluation touches every property owner in town at once, and it rarely comes as a surprise to people paying attention. The signs are usually visible a year or more before the notices go out.

Six signs to watch for

1. Your town's equalization ratio has drifted far from 100%. The lower a town's ratio falls, the more assessments have fallen behind actual market value, and the more pressure builds on the town to reset. Ratios in the 60s or below are a common trigger point.
2. Your county is publishing a high Coefficient of Deviation for your town. This measures how unevenly similar properties are assessed relative to each other. A high number means the unfairness isn't just townwide, it's uneven house to house, which is exactly what a revaluation is designed to fix.
3. The town council approves a contract with a revaluation or reassessment firm. This is a public action, usually appearing in council meeting minutes or local news well before residents see any change on their tax bill.
4. It has been a long time since the last one. New Jersey doesn't mandate reassessment on a fixed schedule statewide, but towns that haven't reassessed in a decade or more are common candidates, especially once the ratio and deviation signals above start showing up together.
5. Recent sale prices in town are running well above assessed values, broadly and not just for a few homes. If it's not isolated to one neighborhood or property type but true across most of town, that's the market-versus-assessment gap that eventually forces a correction.
6. You receive an official notice mentioning a revaluation or reassessment program. By the time this happens, it's no longer a sign of one coming, it's confirmation. This is also the notice that shifts your appeal deadline from April 1 to May 1 for that year.

What a revaluation actually does to your bill

The mechanics surprise a lot of homeowners: a revaluation is designed to be revenue-neutral for the town overall. The municipality isn't trying to collect more money by revaluing; it's trying to redistribute the existing tax burden more accurately. That means when assessments rise townwide, the general tax rate falls to compensate, so the total tax levy the town collects stays roughly the same.

What changes is who pays what share of that total. If your home's assessed value was already tracking close to its real market value before the reval, your bill likely won't move much, because your share of the burden was already roughly accurate. If your assessment was significantly behind market value relative to your neighbors, expect your bill to rise, since you were effectively underpaying your fair share under the old numbers. And if your assessment was already running high relative to comparable homes, a revaluation can actually lower your bill.

The practical move

Before a revaluation lands, it's worth knowing where your current assessment sits relative to your town's average ratio, since that gap is the single best predictor of which direction your bill will move. After it lands, your options change too: the assessment your appeal would be measured against is now a fresh number close to actual market value, which changes what evidence actually helps your case.