623 Mountain Ave, Westfield, NJ 07090 Property Records

Union County and Westfield Town property record for 623 Mountain Ave, Westfield, NJ 07090

Property Summary

Property Type	Single Family Home
Details	2,830 sqft · built 1929
Lot Size	0.262 acres (11,400 sqft)
Owner	2 Individual Names on File
Last Sale	$865,000 (Sep 2014)
Tax Bill	$23,695 (2025)
Deeds & Mortgages	Jan 2026 Line of Credit Sep 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`20-01108-0000-00004`

Property Details

APN / Parcel Number

Primary APN	`20-01108-0000-00004`
Alternative APNs	`2000218000000003` `200110800004`

Interior

Stories	2 Stories
Building Area	2,830 sqft Living Area

Exterior

Year Built	Built 1929
Effective Year Built	Effective 1929
Architectural Style	Colonial
Construction Type	Frame
Lot Area	11,400 sqft (0.262 acres)
Lot Dimensions	152 ft deep x 75 ft wide
Garage Type	Attached
Parking Spaces	2 Parking Spaces

Location & Zoning

Old Parcel Number	2000218000000003
Street Address	623 MOUNTAIN AVE
City	WESTFIELD
State	NJ
Zip	07090
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	WESTFIELD GARDENS
Legal Block	1108
Legal Lot Number	4
Jurisdiction	UNION NJ
Township / Civil Division	WESTFIELD
Census Block Group	1
Census Block	1020
Census Tract	36500

Owner

623 Mountain Ave is owned by two individuals who bought it in September 2014.

Source: Union County and Westfield Town records, as of July 8, 2026

Owner of Record	2 Individual Names on File
Mailing Address	570 COLONIAL AVE, WESTFIELD, NJ 07090-3053
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Jan 8, 2026	Deed of Trust, Mortgage · Line of Credit AFFINITY FCU
Sep 17, 2021	Deed of Trust, Mortgage · Conventional Mortgage INVESTORS BANK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 26, 2014 · Amount on File
Deed Sale	Sep 26, 2014 · Amount on File
Prior Sale	Apr 15, 2011 · Amount on File
Deed Document Number	2014254735
Deed Book / Page	6023 / 968
Record Updated	Sep 20, 2026

January 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	UNION NJ
Property Address	623 MOUNTAIN AVE, WESTFIELD, NJ 07090
Transaction Type	Mortgage
Record Updated	Jan 27, 2026
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TTL INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0157452001
Date	Jan 8, 2026
Book Page	15745/2001
Instrument	87308

Lender

Name	AFFINITY FCU
Type	Credit Union
Address	BASKING RIDGE, NJ 07920

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	480 Months
Due	Jan 8, 2066

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

September 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	UNION NJ
Property Address	623 MOUNTAIN AVE, WESTFIELD, NJ 07090
Transaction Type	Mortgage
Record Updated	Oct 20, 2025
Title Company	WESTCOR LAND TITLE INSURANCE COMPANY, WESTCOR LAND TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0150590115
Date	Sep 17, 2021
Book Page	15059/115
Instrument	21135

Lender

Name	INVESTORS BANK
Type	Bank
Address	MILLBURN, NJ 07041

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Oct 1, 2051

Interest

Rate Type	Adjustable Rate
Rate	2.5%
Type Change Date	Oct 1, 2028
Change Frequency	Annually
Min Rate At Change	2.75%
Max Rate At Change	4.5%
Index	1-Year CMT
Max Rate	7.5%

Tax Assessment & Valuation

The 2025 property tax bill for 623 Mountain Ave was $23,695, up 1.8% from the year before.

Source: Union County and Westfield Town assessment roll, as of July 8, 2026

Property Jurisdictions

Type	Name
State	New Jersey
County	Union County
Municipality	Westfield Town
Unified School District	Westfield Town School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$1,033,800 (-) Land $742,300 Building $291,500	$1,033,800 (-) Land $742,300 Building $291,500
2025	$23,695.00 (+1.78%)	$1,033,800 Land $742,300 Building $291,500	$1,033,800 Land $742,300 Building $291,500
2024	$23,281.00
2023		$1,033,800 Land $742,300 Building $291,500	$1,033,800 Land $742,300 Building $291,500
2022	$22,330.00

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

Flood

FEMA maps place 623 Mountain Ave in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective September 24, 2020 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	6 in force

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.

Wildfire

Wildfire risk around 623 Mountain Ave is low, with less than a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 96% of the US · lower than 89% of New Jersey
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	NJ AMERICAN WATER - RARITAN private · serves 615,430 people · EPA ID NJ2004002
Water Source	Surface water
Last State Inspection	Jun 2024
Lead	1 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	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 433 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Verizon Fiber · Fixed Wireless in parts of the area	2,300 / 2,300
Xfinity Cable	2,000 / 250

May also be available: T-Mobile.

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