520-550 MYRTLE AVE

Boonton Town, Morris County · Block 69, Lot 75.6

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Assessment year 2026 · Rate year 2025 · Prior rate 2024

Assessments are tax year 2026; latest published general rate we have is 2025. Estimate uses that rate until the 2026 rate is loaded.

Estimated tax story (homeowner view)
+2.9%

Estimated tax up $12,046 ($415,449 → $427,495) using 2024→2025 rates (3.380 → 3.478) × assessed net.

Assessment net change: 0.0% ($12,291,400 → $12,291,400).

Assessment

Land$3,189,700
Improvements$9,297,500
Net (taxable assessed, 2026)$12,291,400
Town avg ratio used63.26% (Average ratio (Director’s / Chapter 123))
Implied equalized value$19,429,972
2025 tax (MOD-IV billed)$427,494.89
Est. 2025 tax @ general rate$427,495
Mailing address (2026)P.O BOX 2539, SAN ANTONIO, 78299

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.

Change since the 2013 sale of $18,350,000: implied equalized value $19,429,972 is $1,079,972 above that sale. This is not an appraisal.

Building permits for 520-550 MYRTLE AVE

The New Jersey construction-permit file lists 12 permits for 520-550 MYRTLE AVE in Boonton Town. 9 are still open in the state file. Permit 25-373, a new building, was issued 17 Dec 2025 and is open in the state file. The reported cost is $600.

Permit Type Use Issued Closed Reported cost
94-25 Demolition Accessory buildings and miscellaneous structures 14 Feb 1994 Open in the state file $0
2021-212 Alteration Business Uses 12 Jul 2021 29 Oct 2021, Certificate of Approval $62,600
2021-212+A Alteration Business Uses 11 Aug 2021 Open in the state file $28,000
2021-384 Alteration Business Uses 16 Nov 2021 Open in the state file $5,700
2022-188 Alteration Business Uses 7 Jun 2022 9 Jun 2022, Certificate of Approval $104,000
2022-191 Alteration Mercantile buildings 8 Jun 2022 Open in the state file $250,100
24-034 Alteration International Residential Code 8 Feb 2024 Open in the state file $7,000
25-003 Alteration International Residential Code 2 Jan 2025 17 Jan 2025, Certificate of Approval $48,100
25-089 New International Residential Code 3 Apr 2025 Open in the state file $6,500
25-165 Alteration Business Uses 4 Jun 2025 Open in the state file $125,000
25-373 New International Residential Code 17 Dec 2025 Open in the state file $600
26-078 Alteration International Residential Code 24 Mar 2026 Open in the state file $18,225

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 Boonton Town construction office.

Flood zone for 520-550 MYRTLE AVE

FEMA’s flood map returned no flood zone at the mapped point for 520-550 MYRTLE AVE.

The state’s 10-foot ground scan puts the lowest cell on this lot at 383.9 feet and the highest at 390.2 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 520-550 MYRTLE AVE

This lot is within the Rockaway Valley Regional SA sewer system. Please verify with the provider.

This lot is within the Boonton WD 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 $12,291,400 —
2025 $12,291,400 $427,494.89
2024 $13,795,600 $466,291.28
2023 $13,795,600 $454,013.20

Mailing changed in 2025 to P.O BOX 2539, SAN ANTONIO, 78299.

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 $13,795,600 77.15% $17,881,529 — —
2024 $13,795,600 72.29% $19,083,691 0.0% +6.7%
2025 $12,291,400 67.68% $18,161,052 -10.9% -4.8%
2026 $12,291,400 63.26% $19,429,972 0.0% +7.0%

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 $13,795,600 3.291 $454,013 $454,013.20 —
2024 $13,795,600 3.380 $466,291 $466,291.28 +2.7%
2025 $12,291,400 3.478 $427,495 $427,494.89 -8.3%
2026 $12,291,400 — — — —

Where your money goes

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

Schools
$266,355 62.3%
County
$43,757 10.2%
Municipal
$117,383 27.5%

Of the estimated increase of $12,046, the school portion moved $8,358 up, the county portion $1,475 up, and the municipal portion $2,212 up. Those are pieces of the dollar change. They are not a change in each share of the rate.

District school (2.167)$266,355
County (0.346)$42,528
County open space (0.010)$1,229
Municipal purpose (0.906)$111,360
Municipal library (0.049)$6,023

Property details

Class4A — Commercial
Building class—
BuildingSHOPPING CENTER
Land description5.596 AC
Dwellings—
Commercial units—
Year built1999
Acreage5.596
ZoningC-1 — town zoning code
Tax map page49
Additional lots—
Census tract / block—
Special tax codes—
MOD-IV current-year tax—
Last sale$18,350,000 · 12/19/2013 · sale assessment $13,991,400
Deed book / page22475 / 00524

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.