Middlesex Borough, NJ · Middlesex County · Residential · Block 198, Lot 21
Favorable tax position
The Watchdog Score, powered by the ROBUST Framework. Evidence coverage 55%, low confidence.
Among 4,176 homes in Middlesex Borough, the typical (median) tax bill is $9,667. This bill is higher than about 56% of them.
Rates start in 2023, the first year after the last town-wide revaluation.
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| Address | Sold | Price |
|---|---|---|
| 60 Marlborough AveSame street | Oct 2023 | $375,000 |
| 26 Marlborough AveSame street | Oct 2023 | $200,000 |
| 428 Howard Ave | Nov 2024 | $380,000 |
| 424 Lorraine Ave | Jul 2024 | $437,000 |
| 424 Cook Ave | Feb 2024 | $505,000 |
| 417 Giles Ave | Dec 2023 | $396,000 |
Same property type in the same town, same street first. Prices come from the state tax list, which runs about a year behind, and can include sales between relatives or other non-market transfers.
We check the state tax list once a month and email you if the assessment, tax bill or Watchdog Score for 21 Marlborough Ave changes. Unsubscribe any time.
A printable report for 21 Marlborough Ave: tax and assessment, the Watchdog Score, how the bill compares in Middlesex Borough, recent nearby sales and appeal dates.
The latest annual property tax on the New Jersey tax list is $10,073, on an assessed value of $506,200.
Among 4,176 homes in Middlesex Borough, the typical (median) tax bill is $9,667. This bill is higher than about 56% of them.
The Watchdog Score, powered by the ROBUST Framework, rates a property's tax position from 0 to 100 using six kinds of public evidence. Higher is better. This property scores 72 (Favorable tax position).
Yes. Appeals go to the Middlesex County Board of Taxation. In most towns the deadline is April 1 (May 1 after a town-wide revaluation), or 45 days after assessment notices are mailed if that is later.
No. Watchdog does not show owner names or mailing addresses. Everything on this page comes from public tax and parcel records.
Source: New Jersey MOD-IV tax list and NJ Office of GIS parcel data, refreshed monthly (last refresh October 2026). Town tax rates from the NJ Division of Taxation. Watchdog does not show owner names. How we get our numbers