South Plainfield Borough, NJ · Middlesex County · Residential · Block 38, Lot 9
Strong tax position
The Watchdog Score, powered by the ROBUST Framework. Evidence coverage 85%, high confidence.
Among 6,807 homes in South Plainfield Borough, the typical (median) tax bill is $8,190. This bill is lower than about 60% of them.
Claim it to follow its assessment, tax and score in your Watchdog account. Once ownership is verified, you can add a photo that shows wherever this address appears on Watchdog.
| Address | Sold | Price |
|---|---|---|
| 1520 Central Ave | Oct 2024 | $760,000 |
| 314 Wadsworth | Aug 2024 | $597,000 |
| 329 Rahway Ave | Apr 2024 | $630,000 |
| 1406 Central Ave | Sep 2024 | $510,000 |
| 1620 Central Ave | Aug 2024 | $530,000 |
| 313 Wadsworth Ave | Dec 2023 | $625,000 |
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 328 Firth St changes. Unsubscribe any time.
A printable report for 328 Firth St: tax and assessment, the Watchdog Score, how the bill compares in South Plainfield Borough, recent nearby sales and appeal dates.
The latest annual property tax on the New Jersey tax list is $7,799, on an assessed value of $111,700.
Among 6,807 homes in South Plainfield Borough, the typical (median) tax bill is $8,190. This bill is lower than about 60% 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 81 (Strong 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