863 Mountain Ave, Mountainside, NJ 07092 Property Records

Union County and Mountainside Borough property record for 863 Mountain Ave, Mountainside, NJ 07092 · Last verified July 2026

Property Summary

Property Type	Commercial
Lot Size	0.19 acres (8,272 sqft)
Owner	Company Name on File
Last Sale	$2,250,000 (Sep 2020)
Tax Bill	$4,784 (2025)
Deeds & Mortgages	Sep 2020 Sale
Flood Zone	Zone X (minimal risk)
APN	`10-00013-0000-00006`

Property Details

APN / Parcel Number

Primary APN	`10-00013-0000-00006`
Alternative APN	`100001300006`

Interior

Stories	2 Stories

Exterior

Construction Type	Frame
Lot Area	8,272 sqft (0.19 acres)
Lot Dimensions	197 ft deep x 42 ft wide

Location & Zoning

Street Address	863 MOUNTAIN AVE
City	MOUNTAINSIDE
State	NJ
Zip	07092
Property Category	Commercial
Property Type	Commercial > Retail
Legal Block	13
Legal Lot Number	6
Jurisdiction	UNION NJ
Township / Civil Division	MOUNTAINSIDE
Census Block Group	2
Census Block	2025
Census Tract	38300

Owner

Source: Union County and Mountainside Borough records · APN 10-00013-0000-00006

Assessment roll updated July 8, 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	Company Name on File
Mailing Address	PO BOX 160, WESTFIELD, NJ 07091-0160
Owner Type	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Sep 30, 2020 · Amount on Record
Deed Sale	Sep 30, 2020 · Amount on Record
Prior Sale	Jan 03, 2020 · Amount on Record
Deed Document Number	2020328593
Deed Book / Page	6384 / 29
Record Updated	Sep 20, 2026

September 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	UNION NJ
Recording Date	Sep 30, 2020
Property Address	863 MOUNTAIN AVE, MOUNTAINSIDE, NJ 07092
Document Number	0063840029
Book / Page	006384 / 000029
Instrument Date	Sep 22, 2020
Instrument	328593
Transaction Type	Transfer
Record Updated	Oct 26, 2020
Title Company	SUBURBAN TITLE EXAMINERS INC

Transaction

Amount	Amount Recorded
Tax	$2,250.00
Amount Accuracy	Confirmed
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	433 NORTH AVE E WESTFIELD NJ 070901443, WESTFIELD, NJ 07090-1443

Tax Assessment & Valuation

Source: Union County and Mountainside Borough records · Assessment roll updated July 8, 2026 · Last verified July 2026

Property Jurisdictions

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

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$227,800 (-) Land $218,100 Building $9,700	$227,800 (-) Land $218,100 Building $9,700
2025	$4,784.00 (+2.44%)	$227,800 (-) Land $218,100 Building $9,700	$227,800 (-) Land $218,100 Building $9,700
2024	$4,670.00 (+2.66%)
2023		$227,800 Land $218,100 Building $9,700	$227,800 Land $218,100 Building $9,700
2022	$4,549.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Union County (34039C), updated September 24, 2020 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 340390383002, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Nearby Flood Policies	6 in force
Nearby Flood Claims	5 (1979–2022)
Claims Outside the SFHA	5 of 5
Most Recent Claim	Mar 2022, other causes

Wildfire

Wildfire Risk	Low above 20% of the US · above 35% of New Jersey
Wildfire Likelihood	About 1 in 10,000 per year
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, availability as of December 31, 2025 · Published October 2026 · based on 261 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Verizon	Fiber	2,300 / 2,300
Xfinity	Cable	2,000 / 250
AT&T	Fixed Wireless	100 / 20
T-Mobile USA	Fixed Wireless	100 / 20

May also be available at this address: Verizon. Availability varies by address; speeds are provider-advertised maximums, not measured.