I'm not going to dress this up. If you're leaving Staten Island, your tax rate is going up. The question is what the money buys, so let's be precise.
Sayreville's effective property-tax rate runs about 2.1% of market value, per the NJ Division of Taxation's 2025 tables. Staten Island's effective rate is roughly 0.85%, and NYC caps how fast assessments can climb.
On a $530,000 purchase, that's the difference between roughly $4,500 a year on Staten Island and a Sayreville bill that, depending on the home's assessment, typically lands between $7,000 and $11,000 a year. Long-held homes with older assessments sit near the bottom of that band; the borough's median bill runs around $6,800 per Ownwell's data, while a recent full-price purchase should be budgeted toward the top.
Here's the counterweight, and it's real. The comparable detached house on Staten Island costs $100,000 to $200,000 more to buy. Spread that purchase-price gap across a mortgage and the total monthly in Sayreville frequently comes out even or ahead, even with the bigger tax line. And unlike the Monmouth towns you priced first, you're not paying a $14,000-plus bill on a $900,000 house to get here.
How we handle it: before you offer on anything, I pull the actual current tax bill for that specific house, not the town average, and we run your real monthly side by side against what you're leaving. No surprises at the closing table.