Union County's inventory crash.

The Union County story in May 2026 is one of contradictions resolving in sellers' favor. New listings were down 15.2% from a year ago. Closed sales dropped 18.3%. Inventory contracted 12.6%. By every volume metric, the market got smaller in May. And yet — somehow — median sales price ripped +15.6% year-over-year to $748,050. That's the biggest YoY price gain of any of the three counties we serve in North Jersey.

The simple explanation: when both supply and demand contract, but supply contracts more, prices accelerate. Union County in May 2026 had fewer sellers willing to list, but the buyers still in the market continued bidding aggressively. The result was the strongest pricing month in the county since 2022.

The numbers below come from the latest New Jersey REALTORS® Local Market Update, current as of June 9, 2026. Union County includes our home base of Union plus the surrounding Maplewood, Cranford, Hillside, Kenilworth, Linden, Springfield, Roselle, and Roselle Park markets we cover most actively.

The headline numbers

What the numbers actually mean

Here's the underlying mechanic: Union County is having a "stuck market" moment that's tilting heavily in sellers' favor. Existing homeowners with low-rate mortgages are reluctant to sell (because moving means a new mortgage at higher rates). That's why new listings dropped 15.2% — fewer sellers willing to give up their 3% rate to chase a 6.5% one.

But buyers don't have that luxury. New household formation, job relocations, and life-stage moves don't pause for interest rates. So the buyers still in the market are competing for a shrinking pool of homes — and they're paying up. Median jumped from $647,000 in May 2025 to $748,050 in May 2026, a 15.6% gain. Homes still sold at 106.3% of list price on average.

In plain English: Union County now has months of supply at 2.2 (down from 2.4) — well into seller's-market territory. Anyone listing a well-priced home in May saw multiple offers and over-asking results. The catch is that the over-asking number itself is now a moving target, because comp pricing has shifted up so fast.

Town-by-town: where the action is

Here's the May 2026 single-family breakdown for the nine towns our Union office serves most directly:

A few patterns jump out:

• Maplewood is its own market. $1.24M median puts it in a different category from the rest of Union County. NYC commuter demand, school district, and historic-home appeal keeps it operating closer to Hoboken/Montclair than Union Twp.
• Hillside is the biggest mover. +28% YoY — the largest single gain in our footprint. Mid-priced homes finally getting recognized as a value play given Springfield/Roselle Park appreciation.
• Springfield and Roselle both surged ~20%. Both are quiet, commuter-friendly towns with consistent demand. Buyers priced out of Maplewood and Cranford are finding them.
• Cranford slightly softened. -3.9% YoY but at 18-day DOM, still operating at speed. The market for million-dollar Cranford colonials is plateauing at the top, not falling.
• Union Twp is the volume center. 121 active listings — by far the most inventory in the county — at a $600K median. If buyer activity is what you want to track, Union Twp is the bellwether.
• Linden held flat. Only town with essentially zero YoY price change. Strong inventory (66 active) means buyers can shop here without panic.

What it means for buyers

Union County is not where you want to be a casual buyer right now. Inventory is down 12.6%, prices are up 15.6%, and the strongest markets are turning homes in 18 days. If you've been "thinking about it" since spring, you've already missed comp opportunities at meaningfully lower prices.

What works right now:

• Set price alerts within 24 hours, not weekend tours. Cranford and Maplewood DOM is 18 days. Show up Saturday and the home you wanted is gone.
• Stretch into Hillside, Roselle Park, or Linden for value. All three are 30–50% cheaper than Maplewood with reasonable commute access. Linden in particular has 66 listings active — actual choice.
• Pre-approval needs to reflect today's market, not March's. If you got pre-approved before April, your "max budget" no longer reflects the comp pricing. Re-run the math.
• Negotiate harder where DOM is longer. Springfield (41 days), Roselle (44 days), Linden (46 days) — sellers in these towns have had time to soften. Don't pay over ask without reason.

What it means for sellers

If you've been considering selling but waiting for "the right moment" — this is the right moment. Union County's combination of low inventory and continued buyer demand is producing the strongest pricing window since 2022. Maplewood, Springfield, Hillside, and Roselle are all running near peak conditions.

• Price at — not above — current comps. Day-one pricing accuracy matters more than ever. The buyers paying 106.3% of list aren't paying it on aspirational pricing; they're paying it on aggressive pricing that triggers competition.
• The "rate-locked sellers" dynamic is real. If you're moving for a real life reason (kids, job, downsize), you have less competition from speculative sellers than at any point in the last decade. That works in your favor.
• Don't time the market. Time your life. We don't know what June, July, or fall will bring. We know May was very strong. If you're already planning to sell within the year, listing now beats waiting.
• Strong areas — Maplewood, Cranford — need a real luxury marketing strategy. $1M+ properties don't sell themselves. Professional photography, video, drone, and proper print marketing should be table stakes at that price point.

The Union County data table

Source: New Jersey REALTORS®, Local Market Update for May 2026, Union County.

The bottom line

Union County in May 2026 demonstrated what an "inventory crunch seller's market" actually looks like in real time. Both buyers and sellers contracted — but sellers contracted more, which is why prices ripped. This is the kind of market that rewards decisive action on both sides: sellers who price right and list now capture peak pricing; buyers who pre-approve, watch listings hourly, and act in 48 hours actually win homes. The "wait and see" buyers are getting left behind every week.

Fewer sellers. Fewer buyers. But the buyers who showed up paid 15.6% more than they did a year ago. Union County's seller's market sharpened in May.