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13 Mountainside Avenue

Mahwah Township, NJ · Bergen County · Residential · Block 128, Lot 1

Watchdog Score

How it works
91/100

Strong tax position

The Watchdog Score, powered by the ROBUST Framework. Evidence coverage 65%, medium confidence.

  • RRecourse87
  • OOverassessment Positionn/a
  • BBurden93
  • UUniformity85
  • SStabilityn/a
  • TTrajectory100

Property tax

Compare towns
$5,3602024 tax bill
$5,5242025 at new rate
$259,700Assessed value
$8,297Mahwah Township median
$2.1272025 rate

Among 9,360 homes in Mahwah Township, the typical (median) tax bill is $8,297. This bill is lower than about 88% of them.

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

Sales

Nearby sales
$330,000 on September 12, 2008This property's last sale
356Similar sales since 2023
$535,000Median price

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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
1 Mountainside AvenueSame streetJul 2024$499,0001935
181 East Crescent AvenueJan 2024$650,0002024
217 Airmont AvenueOct 2024$650,0001958
44 Southerland DriveOct 2024$705,0001988
88 Fisher RoadSep 2024$895,0001988
40 Litchult LaneAug 2024$550,0001983

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 Mahwah Township.
  • Mahwah Township property taxesTypical bill, tax rate and appeal deadline for the town.
  • MapOpen this address in Google Maps.

Property record

Block / lot
128 / 1
Property class
Residential (2)
Year built
1950
Building
2STFR
Dwelling units
1
Lot size
0.13 acres
Land value
$171,600
Improvement value
$88,100
County
Bergen County

Same block

  • 11 Mountainside Avenue$5,874 tax
  • 9 Mountainside Avenue$4,227 tax
  • 7 Mountainside Avenue$6,192 tax
  • 5 Mountainside Avenue$6,175 tax
  • 3 Mountainside Avenue$6,892 tax
  • 1 Mountainside Avenue$7,333 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 13 Mountainside Avenue changes. Unsubscribe any time.

Property report (PDF)

A printable report for 13 Mountainside Avenue: tax and assessment, the Watchdog Score, how the bill compares in Mahwah Township, recent nearby sales and appeal dates.

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Questions

How much are the property taxes at 13 Mountainside Avenue?

The latest annual property tax on the New Jersey tax list is $5,360, on an assessed value of $259,700.

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

Among 9,360 homes in Mahwah Township, the typical (median) tax bill is $8,297. This bill is lower than about 88% 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 91 (Strong tax position).

Can the assessment be appealed?

Yes. Appeals go to the Bergen 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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