I won't sugarcoat the New Jersey tax reality, but the urban-condo math here works differently than it does in the suburbs, so let's be precise.
New Brunswick's effective tax rate runs in the mid-2% range, typical of an urban Middlesex city and higher than Staten Island's roughly 0.85%. But here's the nuance: because a downtown condo is a smaller, lower-priced piece of real estate than a suburban house, the actual annual dollar figure is often more manageable than the rate alone suggests. A $400,000 condo carries a very different bill than a $900,000 suburban colonial, even at a higher rate.
So the honest way to think about it is by the dollar, not the percentage. Run the real, settled tax number on the specific unit, and if it's a condo, factor the monthly HOA fee in alongside it, because together they set your true carrying cost.
What I do about it: before you fall for a place, I pull the actual tax bill and the building's HOA and financials, so you see the full monthly, taxes, fees, and all, not just the rate on paper.