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31 Union Street

Montclair Township, NJ · Essex County · Apartment · Block 3104, Lot 8

Watchdog Score

How it works
63/100

Typical or mixed tax position

The Watchdog Score, powered by the ROBUST Framework. Evidence coverage 85%, high confidence.

  • RRecourse55
  • OOverassessment Position100
  • BBurden35
  • UUniformity60
  • SStabilityn/a
  • TTrajectory86

Property tax

Compare towns
$20,381Latest annual tax
$14,6442025 estimate
$416,500Assessed value
$30,154Montclair Township median
$3.5162025 rate

Among 161 apartment properties in Montclair Township, the typical (median) tax bill is $30,154. This bill is lower than about 87% of them.

Town tax rate per $100
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25

Sales

Nearby sales
$612,500 on June 12, 2024This property's last sale
8Similar sales since 2023
$1,600,000Median price

Is this your home?

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.

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Recent sales nearby

AddressSoldPriceBuilt
29 Union StreetSame streetSep 2024$600,0001901
53 Union StreetSame streetApr 2024$1,700,0001973
14 Seymour StreetAug 2024$2,400,0001922
30 Gates AvenueAug 2024$7,250,0001923
191 Bellevue AvenueNov 2023$4,850,0001923
145 Park StreetJan 2024$1,425,0001897

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.

Homeowner tools

  • Could an appeal lower this bill?The appeal estimator opens with this property's assessment and the town tax rate filled in.
  • Appeal deadlinesUsually April 1 (May 1 after a town-wide revaluation), or 45 days after assessment notices go out if later.
  • ANCHOR, Senior Freeze and Stay NJCheck which state property tax relief programs apply.
  • Buying here?Monthly cost with the real tax bill included.
  • Selling? CO requirementsResale certificate of occupancy and smoke detector certificate rules for Montclair Township.
  • Montclair Township property taxesTypical bill, tax rate and appeal deadline for the town.
  • MapOpen this address in Google Maps.

Property record

Block / lot
3104 / 8
Property class
Apartment (4C)
Year built
1902
Dwelling units
11
Lot size
0.17 acres
Land value
$219,000
Improvement value
$197,500
County
Essex County

Same block

  • 294 Bloomfield Avenue$156,388 tax
  • 47 So. Willow Street$14,749 tax
  • 45 So. Willow Street$14,453 tax
  • 43 So. Willow Street$20,472 tax
  • 41 So. Willow Street$23,600 tax
  • 39 So. Willow Street$41,534 tax
  • 35 So. Willow Street$44,099 tax
  • 33 So. Willow Street$7,735 tax

Get alerts for this property

We check the state tax list once a month and email you if the assessment, tax bill or Watchdog Score for 31 Union Street changes. Unsubscribe any time.

Property report (PDF)

A printable report for 31 Union Street: tax and assessment, the Watchdog Score, how the bill compares in Montclair Township, recent nearby sales and appeal dates.

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Questions

How much are the property taxes at 31 Union Street?

The latest annual property tax on the New Jersey tax list is $20,381, on an assessed value of $416,500.

How does this tax bill compare with others in Montclair Township?

Among 161 apartment properties in Montclair Township, the typical (median) tax bill is $30,154. This bill is lower than about 87% of them.

What is the Watchdog Score?

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 63 (Typical or mixed tax position).

Can the assessment be appealed?

Yes. Appeals go to the Essex 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.

Does Watchdog show who owns this property?

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

Photo by Zac Gudakov on Unsplash
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