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240 Library Place

Princeton, NJ · Mercer County · Residential · Block 5.02, Lot 22

Watchdog Score

How it works
81/100

Strong tax position

The Watchdog Score, powered by the ROBUST Framework. Evidence coverage 55%, low confidence.

  • RRecourse90
  • OOverassessment Positionn/a
  • BBurden76
  • UUniformity85
  • SStabilityn/a
  • TTrajectoryn/a

Property tax

Compare towns
$84,526Latest annual tax
$81,2822025 estimate
$2,974,100Assessed value
$20,124Princeton median
$2.7332025 rate

Among 6,839 homes in Princeton, the typical (median) tax bill is $20,124. This bill is higher than about 99% of them.

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

Sales

Nearby sales
$3,350,000 on February 7, 2005This property's last sale
305Similar sales since 2023
$1,300,000Median 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
87 Library PlaceSame streetApr 2024$1,700,0001860
64 Westcott RoadOct 2024$2,221,0001955
193 Elm RoadAug 2024$3,275,0001928
57 Hodge RoadAug 2024$2,407,0001940
34 Cleveland LaneJan 2024$5,300,0001901
106 Wilson RdAug 2024$4,750,0002024

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

Property record

Block / lot
5.02 / 22
Property class
Residential (2)
Year built
1840
Building
2SST3GPPH
Dwelling units
1
Lot size
1.05 acres
Land value
$850,500
Improvement value
$2,123,600
County
Mercer County

Same block

  • 80 Westcott Road$46,576 tax
  • 208 Library Place$29,831 tax
  • 65 Cleveland Lane$35,290 tax
  • 58 Westcott Road$29,293 tax
  • 67 Lafayette Rd$39,910 tax
  • 71 Cleveland Lane$45,796 tax
  • 61 Cleveland Lane$31,178 tax
  • 57 Cleveland Lane$43,274 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 240 Library Place changes. Unsubscribe any time.

Property report (PDF)

A printable report for 240 Library Place: tax and assessment, the Watchdog Score, how the bill compares in Princeton, recent nearby sales and appeal dates.

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Questions

How much are the property taxes at 240 Library Place?

The latest annual property tax on the New Jersey tax list is $84,526, on an assessed value of $2,974,100.

How does this tax bill compare with others in Princeton?

Among 6,839 homes in Princeton, the typical (median) tax bill is $20,124. This bill is higher than about 99% 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 81 (Strong tax position).

Can the assessment be appealed?

Yes. Appeals go to the Mercer 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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