18 Prospect St, Mendham, NJ 07945 Property Records

Morris County and Mendham Borough property record for 18 Prospect St, Mendham, NJ 07945

Property Summary

Property Type	Single Family Home
Details	5,285 sqft · built 1894
Lot Size	1.59 acres (69,652 sqft)
Owner	Individual Name on File
Last Sale	$627,000 (Jul 1999)
Tax Bill	$28,809 (2024)
APN	`18-01901-0000-00020`

Property Details

APN / Parcel Number

Primary APN	`18-01901-0000-00020`
Alternative APN	`180190100020`

Interior

Building Area	5,285 sqft Living Area

Exterior

Year Built	Built 1894
Effective Year Built	Effective 1894
Lot Area	69,652 sqft

Location & Zoning

Street Address	18 PROSPECT ST
City	MENDHAM
State	NJ
Zip	07945-1216
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	1-AC
Legal Block	1901
Legal Lot Number	20
Jurisdiction	MORRIS NJ
Township / Civil Division	MENDHAM
Census Block Group	3
Census Block	3013
Census Tract	46400

Owner

Source: Morris County and Mendham Borough records · APN 18-01901-0000-00020

Assessment roll updated July 9, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on File
Mailing Address	18 PROSPECT ST, MENDHAM, NJ 07945-1216
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Jul 22, 1999 · Amount on Record
Deed Sale	Jul 22, 1999 · Amount on Record
Prior Sale	Feb 18, 1998
Deed Document Number	199977976
Deed Book / Page	5018 / 32
Last Transfer Date	May 23, 2000
Transfer Doc	0000042130
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

Source: Morris County and Mendham Borough records · Assessment roll updated July 9, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	New Jersey
County	Morris County
Municipality	Mendham Borough
Elementary School District	Mendham Borough School District (KG - 08)
Secondary School District	West Morris Regional School District (09 - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$1,171,100 (-) Land $345,500 Building $825,600	$1,171,100 (-) Land $345,500 Building $825,600
2025		$1,171,100 (-) Land $345,500 Building $825,600	$1,171,100 (-) Land $345,500 Building $825,600
2024	$28,809.00 (+3.19%)
2023		$1,171,100 Land $345,500 Building $825,600	$1,171,100 Land $345,500 Building $825,600
2022	$27,919.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer · FEMA OpenFEMA NFIP redacted claims and policies, census block group 340270464003, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Not on file
Nearby Flood Policies	3 in force
Nearby Flood Claims	4 (1999–2020)
Claims Outside the SFHA	1 of 4
Most Recent Claim	Dec 2020 · other causes
Claims by Event	Hurricane Irene, Aug 2011 · 2 claims

Wildfire

Wildfire Risk	Low lower than 80% of the US · lower than 65% of New Jersey
Wildfire Likelihood	0.02% annual chance
Exposure	Direct burnable vegetation at the parcel

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Verizon Fiber · Fixed Wireless in parts of the area	2,300 / 2,300
Xfinity Cable	1,200 / 35
T-Mobile USA Fixed Wireless	100 / 20

May also be available: Optimum Communications.

Based on FCC filings for 126 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system NJ0712001, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	NJ AMERICAN WATER - SHORT HILLS private · serves 217,230 people
Water Source	Surface water
Last State Inspection	Nov 2022
Lead	3 ppb (2026) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	1 last 3 years

Results are for the whole water system as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.