509 Mountain Ave, Westfield, NJ 07090 Property Records

Union County and Westfield Town property record for 509 Mountain Ave, Westfield, NJ 07090

Property Summary

Property Type	Single Family Home
Details	2,677 sqft · built 1951
Lot Size	0.233 acres (10,141 sqft)
Owner	2 Individual Names on File
Last Sale	$1,585,000 (Jun 2023)
Tax Bill	$28,627 (2025)
Deeds & Mortgages	Jun 2023 Sale & Mortgage Apr 2022 Sale & Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`20-01110-0000-00017`

Property Details

APN / Parcel Number

Primary APN	`20-01110-0000-00017`
Alternative APNs	`2000216000000008A` `200111000017`

Interior

Stories	1 Story
Building Area	2,677 sqft Living Area

Exterior

Year Built	Built 1951
Effective Year Built	Effective 2022
Architectural Style	Cape Cod
Construction Type	Frame
Lot Area	10,141 sqft (0.233 acres)
Lot Dimensions	156 ft deep x 65 ft wide
Garage Type	Detached
Parking Spaces	1 Parking Space

Location & Zoning

Old Parcel Number	2000216000000008A
Street Address	509 MOUNTAIN AVE
City	WESTFIELD
State	NJ
Zip	07090-3035
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Block	1110
Legal Lot Number	17
Jurisdiction	UNION NJ
Township / Civil Division	WESTFIELD
Census Block Group	1
Census Block	1023
Census Tract	36500

Owner

509 Mountain Ave is owned and occupied by two individuals who bought it in June 2023.

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

Owner of Record	2 Individual Names on File
Mailing Address	509 MOUNTAIN AVE, WESTFIELD, NJ 07090-3035
Occupancy	Owner Occupied
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
Jun 19, 2023	Deed, Subdivision Related Transfer · Conventional Mortgage GUARANTEED RATE INC
Apr 26, 2022	Deed, Transfer · Commercial Mortgage FINANCE OF AMERICA MORTGAGE LLC
Sep 17, 2019	Correction Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 19, 2023 · Amount on File
Deed Sale	Jun 19, 2023 · Amount on File
Prior Sale	Apr 26, 2022 · Amount on File
Deed Document Number	202329769
Deed Book / Page	6511 / 464
Prior Transfer Date	Sep 13, 2019
Prior Transfer Doc	0063400007
Record Updated	Sep 20, 2026

June 2023: Deed, Subdivision Related Transfer

Document Type	Deed
Jurisdiction	UNION NJ
Recording Date	Jun 19, 2023
Property Address	509 MOUNTAIN AVE, WESTFIELD, NJ 07090-3035
Document Number	0065110464
Book / Page	6511 / 464
Instrument Date	May 31, 2023
Instrument	29769
Transaction Type	Subdivision Related Transfer
Record Updated	Oct 20, 2025
Title Company	NOBLE TITLE, NOBLE TITLE AGENCY INC

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$32,503.50
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	116 BURNHAM DR, FORDS, NJ 08863-1042

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	509 MOUNTAIN AVE, WESTFIELD, NJ 07090-3035

Mortgage

Document Number	0000053027
Date	Jun 19, 2023
Instrument	53027

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Jun 1, 2053

April 2022: Deed, Transfer

Document Type	Deed
Jurisdiction	UNION NJ
Recording Date	Apr 26, 2022
Property Address	509 MOUNTAIN AVE, WESTFIELD, NJ 07090-3035
Document Number	0064612415
Book / Page	6461 / 2415
Instrument Date	Apr 20, 2022
Instrument	17405
Transaction Type	Transfer
Record Updated	Oct 20, 2025
Title Company	UNKNOWN, ALLIED TITLE LLC SUITE

Transaction

Amount	Amount on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$5,503.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	1132 SPENCER AVE, SANTA ROSA, CA 95404-3511

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	509 MOUNTAIN AVE, WESTFIELD, NJ 07090-3035
Investor	Possibly a Property Investor

Mortgage

Document Number	0000036324
Date	Apr 26, 2022
Instrument	36324

Lender

Name	FINANCE OF AMERICA MORTGAGE LLC
Type	Mortgage Company

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

September 2019: Correction Deed, Transfer

Document Type	Correction Deed
Jurisdiction	UNION NJ
Recording Date	Sep 17, 2019
Property Address	509 MOUNTAIN AVE, WESTFIELD, NJ 07090-3035
Document Number	0063400007
Book / Page	006340 / 000007
Instrument Date	Sep 13, 2019
Instrument	317160
Transaction Type	Transfer
Record Updated	Oct 3, 2019
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	509 MOUNTAIN AVE WESTFIELD NJ 070903035, WESTFIELD, NJ 07090-3035

Tax Assessment & Valuation

The 2025 property tax bill for 509 Mountain Ave was $28,627, 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		$1,249,000 (-) Land $478,800 Building $770,200	$1,249,000 (-) Land $478,800 Building $770,200
2025	$28,627.00 (+1.78%)	$1,249,000 Land $478,800 Building $770,200	$1,249,000 Land $478,800 Building $770,200
2024	$28,127.00
2023		$561,200 (-) Land $478,800 Building $82,400	$561,200 (-) Land $478,800 Building $82,400
2022	$12,121.00	$561,200 Land $478,800 Building $82,400	$561,200 Land $478,800 Building $82,400

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Flood

FEMA maps place 509 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 509 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 98% of the US · lower than 94% 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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