Open four tabs for Somerville, New Jersey, and you'll get four different answers to a question that sounds like it should have one. Zillow's algorithm puts the typical home value at $435,069. Redfin's median for homes that actually closed in March 2026 was $496,000. Movoto had September 2026 listings priced at a median of $575,000. Homes.com pegged the trailing twelve months of closed sales at $577,500.
That's a spread of more than $140,000 for the same 2.4-square-mile borough. None of these sites is wrong. They're each describing a different slice of a town that isn't really one housing market wearing one zip code. It's at least four, stacked on top of each other inside borders so tight you can walk across the whole thing in twenty minutes.
Why One Zip Code Produces Four Medians
The simplest explanation is volume. Redfin recorded 6 home sales in Somerville in March 2026, down from 9 the year before. When your sample size for the month is in the single digits, one high-end Victorian closing and one starter cape closing in the same thirty days can drag the median in opposite directions depending on which one hits first. A town moving 40 or 50 sales a month absorbs an outlier. A town moving 6 does not.
Layer onto that thin volume a second problem: Somerville isn't selling one kind of house. It's selling several, and they don't compete with each other for the same buyer.
The Town Is 2.4 Square Miles. It's Not One Market.
Somerville borders Hillsborough Township, Raritan Township, and Bridgewater Township, and inside its own small footprint the housing stock splits into distinct pockets that behave like separate towns.
| Sub-market | Typical price range | What you're actually buying | Availability |
|---|---|---|---|
| Northwest Victorians | Roughly $650,000 to $730,000 | Larger, architecturally distinct homes near the historic core along Main, Division, High, and Doughty Streets | Limited, and shrinking further as some of these homes get converted to professional office use |
| Colonial and Cape Cod core | Roughly $470,000 to $515,000 | Three- and four-bedroom mid-century homes, the closest thing Somerville has to a "typical" resale product | Moderate |
| East side, near the hospital | Roughly $400,000 to $610,000 | Smaller ranch and cape-style homes near Robert Wood Johnson University Hospital at Somerset | Very scarce, wide range reflects how few actually trade |
| Somerville Station new construction | Roughly $450,000 to $580,000 for townhomes | Brand-new attached product inside the transit-oriented redevelopment near the train station | Growing, as the redevelopment continues to deliver units |
A buyer with $475,000 to spend and a buyer with $700,000 to spend are not competing for the same houses in Somerville. They're barely shopping in the same town. When a portal blends all four of these pockets into a single median, the number it spits out describes nobody's actual search.
The northwest pocket has an additional wrinkle worth knowing if you're chasing a Victorian. Over the past several decades, some of the grandest homes near the historic core were bought by professionals and converted into law offices, architecture firms, and medical suites rather than staying in the residential resale pool. That quietly shrinks the number of comparable single-family sales in the exact price band where the sample was already thinnest.
New Construction Is Still Being Poured Into the Comps
The fourth pocket, the transit-oriented redevelopment around Somerville Station, is not finished growing, and that matters for anyone trying to read next year's numbers.
AvalonBay's original phase at Somerville Station has been occupied for a few years. Construction on Phase II began in 2026, adding 117 studio, one-, two-, and three-bedroom apartments with underground parking, and it's expected to reach completion by fall 2027. Once that phase delivers, the combined AvalonBay project will total 374 apartment units on the site, alongside 156 PulteGroup townhomes ranging from about 1,004 to 1,930 square feet that were built earlier in the same redevelopment. You can read the construction timeline directly from TAPinto's coverage of the Phase II groundbreaking.
That means for the next several closing cycles, a steady stream of brand-new attached units will keep entering the sales data at prices set by the developer, not by a negotiation between two private parties. If a batch of new townhome closings lands in the same month as a lull in resale activity elsewhere in town, the town-wide median will tilt toward new construction pricing for that stretch, and then swing back the next month when it doesn't. This isn't a flaw in the data. It's what happens when a small town is mid-build.
The original vision for this redevelopment, turning a former landfill and commuter lot into a walkable extension of downtown, won a New Jersey Future Smart Growth Award and is documented on the New Jersey Future project page if you want the planning history behind what's rising along the tracks today.
Somerville Doesn't End Where the Search Box Thinks It Does
There's a third mechanism worth naming, and it's more about search behavior than the housing stock itself. Somerville shares borders with Hillsborough, Raritan, and Bridgewater Townships on every side. Some data aggregators build their "Somerville" figures around zip code boundaries, others around municipal lines, and others around a radius search centered on downtown. Depending on which method a site uses, homes that are technically in a neighboring township, with different tax rates and different price profiles, can bleed into or out of the number you're looking at. That's one more reason two sites pulling data on the same day can land on different medians without either one making an error.
How To Read The Number Like A Buyer, Not A Headline
None of this means the aggregator numbers are useless. It means they answer a different question than the one most buyers are actually asking. "What is Somerville's median home price" is not as useful as "what does a home in my price range, in my preferred pocket of town, actually look like right now."
Before you anchor to any single figure, ask which of the four sub-markets a listing actually sits in, and pull comps from that pocket specifically rather than the town-wide average. Ask what a comparable home a few blocks over closed for in the last 60 to 90 days, not what the borough-wide median was last month. And if you're weighing new construction at Somerville Station against resale elsewhere in town, remember you're comparing two different pricing mechanisms, developer-set pricing on one side and negotiated resale on the other, not two versions of the same product.
Days on market tells a similar story once you separate it out. Redfin logged a median of 72 days on market in March 2026, up sharply from 28 days the year before, while Movoto's September 2026 figure showed a much faster 22-day median. Read alone, that looks like a market that swung from slow to fast in six months. Read against everything above, it more likely reflects which sub-market and which type of inventory happened to be moving in each window, not a single trend line for the whole town.
Frequently Asked Questions
Is Somerville a buyer's market or a seller's market right now? The honest answer depends on which of the four sub-markets you're asking about. A scarce east-side ranch near the hospital behaves differently than a new Somerville Station townhome competing against a builder's active pricing. Ask about your specific price band and property type rather than the town as a whole.
Will the AvalonBay Phase II apartments affect resale home prices? Phase II is rental apartments, not for-sale product, so it won't add directly to the for-sale comp pool. It will keep adding renter demand near downtown, which is worth knowing if you're evaluating an investment property in the area.
Why do the price ranges for similar-looking homes vary so much on the east side? Very few of these homes trade in a given year, so the range reflects genuine scarcity rather than inconsistent pricing. A handful of sales at very different conditions and lot sizes can stretch the range wide.
If you're trying to figure out which of Somerville's four sub-markets actually fits your budget and your must-haves, that's the conversation worth having before you fall in love with a number on a screen. Debbie McLain has spent years watching how these pockets of Somerset County trade differently from each other, and Team McLain can walk you through which comps actually apply to the home you're considering. Let's Connect.
