5 WASHINGTON ST.

Rocky Hill Boro, Somerset County · Block 5, Lot 2

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Assessment year 2026 · Rate year 2025 · Prior rate 2024

2026 revaluation/reassessment town — 2026 general tax rate not in our warehouse yet. Showing 2025 rate against 2026 assessments; YoY % is withheld until the matching rate posts.

Estimated tax story (homeowner view)
$24,237

Estimated annual tax: current net × 2.081 (rate year 2025). Year-over-year % is hidden until the 2026 general rate is available for this reval/reassess town.

Assessment net change: +1.4% ($1,148,900 → $1,164,700).

Assessment

Land$437,500
Improvements$727,200
Net (taxable assessed, 2026)$1,164,700
Town avg ratio used100.00% (Revaluation year (~100% of market))
Implied equalized value$1,164,700
2025 tax (MOD-IV billed)$23,908.61
Est. 2025 tax @ general rate$24,237
Mailing address (2026)28A SOUTH MAIN STREET, PENNINGTON; N.J., 08534

How the ratio works: New Jersey towns often assess below full market value. The average ratio (Director’s / Chapter 123) estimates what percent of true market value the town’s assessments represent. Implied equalized value ≈ assessed net ÷ (ratio ÷ 100). Example: assessed $187,600 at 55.89% ≈ $335,700 equalized. Tax bills still use assessed value × the general tax rate — not the equalized figure.

This town revalued/reassessed for tax year 2026. New assessments are set near true market value, so we treat the ratio as ~100% for this year. Published Chapter 123 average ratio for appeals/statistics is still 91.13% (often still reflecting the prior assessment base).

Building permits for 5 WASHINGTON ST.

No construction permit for 5 WASHINGTON ST. is in the New Jersey construction-permit file. That file is a full record from 2021 on. Work from before then can be missing here and still be at the Rocky Hill Boro construction office.

Flood zone for 5 WASHINGTON ST.

FEMA’s flood map places the mapped point for 5 WASHINGTON ST. in zone X.

The state’s 10-foot ground scan puts the lowest cell on this lot at 148 feet and the highest at 154.6 feet (NAVD88).

These figures are estimates. The zone and any flood elevation come from FEMA’s flood map at a point for this address, and that point can fall in the street. The high and low come from the state’s 10-foot ground scan of the lot outline. A cell can catch a ditch, the street, or the edge of the lot. They are not a survey and not an insurance rating. A licensed surveyor measures the ground and the building. The town floodplain administrator, or a licensed engineer, confirms what the zone means for this lot. No zone at this point, or zone X, does not mean the lot will not flood.

Water and sewer for 5 WASHINGTON ST.

This lot is within the Stage II sewer system. Please verify with the provider.

This lot is within the NJ American Water - Raritan water system. Please verify with the provider.

These lines come from the state’s sewer service areas and public community water areas, read at a point for this address. That point can fall in the street. Being inside a named area means the lot is inside that mapped system, not that a pipe or a meter is on the house. Being outside means the lot is outside the mapped service area, which is usually a septic system or a private well. It is not a hookup record. Please verify with the provider. How we read water and sewer.

Year-by-year assessed value & tax

From NJ MOD-IV files (2023, 2024, 2025, 2026). Tax is the MOD-IV billed amount when present; otherwise —. Current mailing is in Assessment above.

Year Assessed net Tax
2026 $1,164,700 —
2025 $1,148,900 $23,908.61
2024 $1,111,800 $23,103.20
2023 $1,073,600 $23,243.44

Assessed value & ratio history

Parcel assessed nets come from MOD-IV year files (2023, 2024, 2025, 2026). Town average ratios are from Abstract / Chapter 123 when available — implied equalized = assessed ÷ (ratio ÷ 100).

Tax year Assessed net Avg ratio Implied equalized Assessed Δ Equalized Δ
2023 $1,073,600 100.00% $1,073,600 — —
2024 $1,111,800 100.00% $1,111,800 +3.6% +3.6%
2025 $1,148,900 97.43% $1,179,206 +3.3% +6.1%
2026 $1,164,700 100.00% $1,164,700 +1.4% -1.2%

2023: Published average ratio exceeded 100%; New Jersey treats that as 100% for equalization.

2024: Published average ratio exceeded 100%; New Jersey treats that as 100% for equalization.

2026: This town revalued/reassessed for tax year 2026. New assessments are set near true market value, so we treat the ratio as ~100% for this year. Published Chapter 123 average ratio for appeals/statistics is still 91.13% (often still reflecting the prior assessment base).

Tax year history

Assessed net is from that year’s MOD-IV file. Est. tax = assessed × that year’s general rate when we have the rate sheet. Billed tax is the MOD-IV tax field when present (often empty for the newest file year).

Tax year Assessment net General rate Est. tax (that year) Billed tax Est. vs prior
2023 $1,073,600 2.165 $23,243 $23,243.44 —
2024 $1,111,800 2.078 $23,103 $23,103.20 -0.6%
2025 $1,148,900 2.081 $23,909 $23,908.61 +3.5%
2026 $1,164,700 — — — pending rate

Where your money goes

Component $ = net × (component rate ÷ 100). Percents are share of school + county + municipal components for rate year 2025.

Schools
$14,803 61.1%
County
$4,100 16.9%
Municipal
$5,334 22.0%
Regional / consolidated school (1.271)$14,803
County (0.284)$3,308
County library (0.038)$443
County open space (0.030)$349
Municipal purpose (0.439)$5,113
Municipal open space (0.019)$221

Property details

Class4A — Commercial
Building class19 — High quality single-family dwelling
Building2SF 3G
Land description1.5090 ACRES
Dwellings1
Commercial units—
Year built1865
Acreage1.509
Zoning1 — town zoning code
Tax map page04
Additional lots—
Census tract / block—
Special tax codes—
MOD-IV current-year tax—
Last sale—
Deed book / page—

The class, building class, SR1A, and special-tax words are the state’s names for those codes. The zoning code is the town’s. A code that is not on the state list keeps the code and says so.

See this lot on the statewide map, then come back for the full tax story.

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Sources: NJ Division of Taxation MOD-IV (current parcel file) and tax rates for 2025 (Abstract of Ratables). Building permits are read live from the NJ construction-permit file for this block and lot. The flood zone is read live from FEMA’s flood map at a point for this address. The high and low are read live from the state’s 10-foot ground scan. Water and sewer are read live from the state’s service-area maps at that same point. Those map readings are estimates, not a survey and not a hookup record. Estimates are not an official tax bill. Owner names are not shown. Water and sewer · Full disclaimer.