401 Rock Avenue Extension

Property details·North Plainfield, Somerset County, New Jersey·14-00201-03-00006

4Beds
2.1Baths
0.01Acres

Location & Identity

Address

401 Rock Avenue Extension

North Plainfield, NJ 08812

Somerset County

Parcel ID

14-00201-03-00006

Coordinates

40.637723, -74.415523

Owner & Record Identity

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Building details

Bedrooms
4
Bathrooms
2.1
Building style
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Building condition
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Heating & AC
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Pool & features
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Land & lot

Lot size
0.01 acres
Property type (local use code)
8000
Land area
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Lot dimensions
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County context

Somerset County 2026 Insights

Somerset County, New Jersey: Pharma Money, Prestige Suburbs, and a Surprisingly Fragile Rental Market

There's a reason Somerset County consistently ranks among the wealthiest counties in the United States — and it's not just old money or Wall Street commuters. This is the heart of New Jersey's pharmaceutical corridor. Bridgewater, Basking Ridge, and Bedminster host or have hosted the headquarters of Johnson & Johnson, Sanofi, and Verizon, among others. That corporate infrastructure has created a highly educated, highly compensated workforce that has reshaped the county's housing market into something that looks less like a suburb and more like an asset class.

The median household income of nearly $136,000 — nearly double the national figure of $75,149 — is striking on its own. But the more revealing number is the per capita income of $70,321, which suggests the wealth here is distributed across adults, not just top-heavy. With more than a quarter of residents holding graduate degrees and over 31% holding bachelor's degrees, Somerset's labor pool is among the most credentialed in the Northeast.

A Housing Market Running Hot

The 11.6% year-over-year price increase is the headline that demands attention. At a median sale price of $600,000 — with the top decile of transactions clearing $1.27 million — Somerset is experiencing appreciation that outpaces even many coastal metro markets. What's driving it? Post-pandemic migration from Manhattan and Brooklyn continues to flow into Morris and Somerset counties, where buyers find larger homes (averaging over 2,000 square feet) with access to top-ranked school districts. With a vacancy rate of just 2.5% and only 1,596 sales recorded in the past 12 months against a total housing stock of over 132,000 units, this is a deeply constrained market.

StatValueContext
Median Home Price$600,0001.9x the national median
YoY Price Change+11.6%among the sharpest in the tri-state region
Homeownership Rate74.5%well above national avg of ~65%
Graduate Degree Rate26.3%more than 2x the national average

The Renter Paradox

Here's the uncomfortable subplot: Somerset County is legitimately wealthy, yet its renters are under serious financial stress. The rent burden rate of 45.7% — meaning nearly half of renters spend more than 30% of income on housing — is alarming for a county with these income levels. Nearly a quarter (24.5%) face severe rent burden. With a median rent of $1,921 and a Gini index of 0.462 (well above the level economists consider a warning threshold for inequality), the county's prosperity is clearly not evenly distributed. The workers staffing restaurants, retail, and healthcare services that support this affluent community are quietly housing-stressed.

The 20.5% work-from-home rate — one of the highest in New Jersey — also reflects the bifurcated economy: knowledge workers Zooming from Bernardsville farmhouses, while essential workers commute in.


FAQs

What makes Somerset County unique in New Jersey's real estate market? Somerset sits at the intersection of pharmaceutical industry wealth and post-pandemic suburban demand, creating one of the tightest and most expensive housing markets in the state. Its combination of corporate headquarters, elite school districts, and scenic landscapes (including preserved farmland in Bedminster and Far Hills) gives it a profile unlike any other New Jersey county.

Is Somerset County a good place to buy a home right now? For buyers who can qualify, the fundamentals are strong — low vacancy, rising values, and a high-income employment base nearby. However, at a price-to-income ratio of roughly 4.4x even against the above-average local incomes, affordability is tightening. Entry-level buyers face a floor around $340,000, and competition at that price point is fierce.

Why are renters struggling in such a wealthy county? The county's rental stock is modest — only 25.5% of households rent — and hasn't kept pace with demand from workers who can't afford to buy. The result is a compressed rental market where even middle-income tenants are squeezed, a pattern common to high-cost suburban counties across the Northeast.

Local market context

Our database includes 5,750 properties in North Plainfield.

With an average price of $442,560, North Plainfield offers mid-range housing options.

The price per square foot of $274 reflects strong property valuations in this area.

Home prices in North Plainfield are 38% lower than the Somerset County average.

MetricNorth PlainfieldSomerset Countyvs County
Average Price$442,560$719,455-38%
Avg Sq Ft1,6142,238-28%
Price/Sq Ft$274$321-15%
Properties5,750138,517-96%

Frequently Asked Questions About North Plainfield, NJ Real Estate

What is the average home price in North Plainfield, NJ?

The average home price in North Plainfield, NJ is $442,560, based on analysis of 5,750 properties in our database.

How many properties are tracked in North Plainfield, NJ?

Our database includes 5,750 properties in North Plainfield, NJ, providing comprehensive market coverage.

What is the price per square foot in North Plainfield, NJ?

The average price per square foot in North Plainfield, NJ is $274. This is calculated from an average home price of $442,560 and average size of 1,614 square feet.

What is the average home size in North Plainfield, NJ?

Homes in North Plainfield, NJ average 1,614 square feet, with an average price of $442,560.

How does North Plainfield, NJ compare to other cities in Somerset County?

North Plainfield, NJ is one of many cities in Somerset County, NJ with property data available. Browse other cities in the county to compare market conditions and pricing.

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