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Mountainside, New Jersey Property Records

Browse public property records for Mountainside, Union County, New Jersey — tax assessments, lot details, and recent home sales. Data is compiled from official New Jersey assessment and sales records.

  • Parcels on record: 2,833
  • Average assessment: $884,097
  • Home sales (last 12 months): 60
  • Average sale price (last 12 months): $1,430,566

Recent Home Sales in Mountainside

  • 1532 LONG MEADOW — $1,533,000 (2026-06-05)
  • 1438 DUNN PARKWAY — $1,080,000 (2026-05-20)
  • 1100 HECKEL DRIVE — $1,395,000 (2026-05-11)
  • 1098 SUNNY SLOPE DRIVE — $775,000 (2026-05-08)
  • 130 GREENWOOD ROAD — $1,761,800 (2026-05-08)
  • 1414 WHIPPOORWILL WAY — $1,925,000 (2026-05-06)
  • 1524 LONG MEADOW — $900,000 (2026-05-06)
  • 373 UPLAND ROAD — $945,600 (2026-04-24)
  • 557 PHEASANT HILL ROAD — $775,000 (2026-04-22)
  • 1167 ROUTE 22 — $1,825,000 (2026-04-15)

See more in Union County property records or the Mountainside sales history.