231 MENDHAM RD.

Bernardsville Boro, Somerset County · Block 19, Lot 19

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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)
$131,492

Estimated annual tax: current net × 1.898 (rate year 2025). Year-over-year % is hidden until the 2026 general rate is available for this reval/reassess town.

Assessment net change: +6.4% ($6,508,700 → $6,927,900).

Assessment

Land$1,572,600
Improvements$5,355,300
Net (taxable assessed, 2026)$6,927,900
Town avg ratio used100.00% (Revaluation year (~100% of market))
Implied equalized value$6,927,900
2025 tax (MOD-IV billed)$123,535.13
Est. 2025 tax @ general rate$131,492
Mailing address (2026)995 HILLSBORO MILE, HILLSBORO BCH; FL, 33062

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 class 2 — residential (four families or less) — net assessment sits above the town class-2 average of $992,247.

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 97.97% (often still reflecting the prior assessment base).

Building permits for 231 MENDHAM RD.

The New Jersey construction-permit file lists 1 permit for 231 MENDHAM RD. in Bernardsville Boro. Permit 04-003, a demolition, was issued 8 Jan 2004 and closed 15 Jun 2005 with a Certificate of Approval. The reported cost is $37,000.

Permit Type Use Issued Closed Reported cost
04-003 Demolition Accessory buildings and miscellaneous structures 8 Jan 2004 15 Jun 2005, Certificate of Approval $37,000

The file does not name the work. This file is a full record from 2021 on. Older permits are mostly missing. A repair from before then can be absent here and still be at the Bernardsville Boro construction office.

Flood zone for 231 MENDHAM RD.

FEMA’s flood map places the mapped point for 231 MENDHAM RD. in zone X.

The state’s 10-foot ground scan puts the lowest cell on this lot at 587.1 feet and the highest at 639.8 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 231 MENDHAM RD.

This lot is most likely on septic because it is outside the mapped sewer service area. Please verify.

This lot is within the NJ American Water - Short Hills 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 $6,927,900 —
2025 $6,508,700 $123,535.13
2024 $6,042,500 $118,130.88
2023 $5,736,500 $115,246.29

Mailing changed in 2024 to 995 HILLSBORO MILE, HILLSBORO BCH; FL, 33062.

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 $5,736,500 98.32% $5,834,520 — —
2024 $6,042,500 100.00% $6,042,500 +5.3% +3.6%
2025 $6,508,700 97.71% $6,661,242 +7.7% +10.2%
2026 $6,927,900 100.00% $6,927,900 +6.4% +4.0%

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 97.97% (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 $5,736,500 2.009 $115,246 $115,246.29 —
2024 $6,042,500 1.955 $118,131 $118,130.88 +2.5%
2025 $6,508,700 1.898 $123,535 $123,535.13 +4.6%
2026 $6,927,900 — — — pending rate

Where your money goes

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

Schools
$74,336 56.5%
County
$21,061 16.0%
Municipal
$36,094 27.4%
Regional / consolidated school (1.073)$74,336
County (0.275)$19,052
County open space (0.029)$2,009
Municipal purpose (0.469)$32,492
Municipal open space (0.020)$1,386
Municipal library (0.032)$2,217

Property details

Class2 — Residential (four families or less)
Building class23 — Highest estate quality single-family dwelling
Building2S-F;6GAR
Land description16.00AC
Dwellings1
Commercial units—
Year built2008
Acreage16
ZoningR110 — town zoning code
Tax map page18
Additional lots15;421 SF
Census tract / block—
Special tax codes—
MOD-IV current-year tax—
Last sale—
Deed book / page07524 / 02656

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.