Chatham Has One Zip Code and Two Housing Markets

Before you sign anything in Chatham, call Borough Hall about train parking. Not because you need a permit today. Because the answer tells you something the listing sheet won't: which Chatham you're actually buying into.

Chatham Borough issues annual parking permits for its two train station lots, Railroad Plaza North and South, to Borough residents only. The fee is $600 a year, enforcement runs 7 a.m. to 4 p.m. on weekdays, and there is currently a waiting list. Chatham Township, despite sharing the same train station, the same ZIP code, and the same school district as the Borough, does not issue its own commuter permits at all. Township residents who want one have to apply through the Borough and wait like everyone else. Buyers who assume "Chatham" means an easy walk to Midtown Direct sometimes find out after closing that their new address doesn't come with that privilege, and end up driving to Summit for a guaranteed spot instead.

That parking rule is a small thing. It's also the clearest proof that the town you're pricing on Zillow or Redfin isn't one market. It's two, and most of the numbers people quote about "Chatham" blur the line between them.

Two Towns, One ZIP Code

Chatham Borough and Chatham Township are separate municipalities with separate governments, separate tax rates, and separate zoning authority. They share ZIP code 07928, one public library, and the School District of the Chathams, which serves both towns as a single system. They do not share a mayor, a budget, or a housing stock.

The Borough is the walkable half: a compact downtown built around the train station, smaller lots, older housing closer together. The Township is larger and more wooded, with bigger parcels and more newer construction spread further from Main Street. Any site that reports a single "Chatham" home value is making a choice about which of these two very different physical towns it's describing, and most don't tell you which one they picked.

Why the Median Won't Sit Still

Here is what happens when you check three sites for "Chatham home prices" in the same week. As of late July 2026, Redfin reported the average Chatham house price at $1.52 million, up 30.2 percent from a year earlier, with the three-month median sitting at $1.5 million. That same month, Zillow's home value index, which measures a different thing (an algorithmic typical-value estimate rather than a median of actual closings), put the figure at $1,098,726. In April 2026, Movoto reported a $1,397,000 median for Chatham, while its separate page for Chatham Township showed a $849,500 median in July.

None of those numbers are wrong. They're measuring different things: an index versus a median, a three-month window versus a single month, one town's boundary versus another's. Redfin also noted that Chatham sold only 31 homes in July 2026, down from 37 the year before. When a town closes barely thirty transactions in a month, a single high-end sale or a single starter-home sale can swing the reported median by tens of thousands of dollars, and a headline like "up 30 percent" often reflects a thin sample meeting an unusual comp rather than a market that actually moved that much.

If you're comparing Chatham to another town using a single quoted number, you're comparing apples to a number that might describe the Township, might describe the Borough, might be a median, and might be an index. The fix isn't to find the "real" number. It's to ask which town and which method produced the one you're looking at, every time.

The Corridor Absorbing All the New Construction

There's a structural reason the two towns are diverging even further, and it has nothing to do with buyer taste. New Jersey's Fair Housing Act requires every municipality to plan for a court-set number of affordable housing units through 2035, the so-called Fourth Round obligation. Chatham Borough and Chatham Township each carry their own separate number, and each has chosen a different way to satisfy it.

The Borough is largely built out, with little vacant land left, so it has met its obligation by rezoning specific corridors rather than spreading density across the whole town. The result is concentrated almost entirely along River Road and, more recently, South Passaic Avenue.

The Ivy, a 245-unit rental building at 2 River Road developed by BNE Real Estate Group, includes 37 affordable units and was built under a Payment in Lieu of Taxes agreement the Borough's own redevelopment page says is projected to bring in more than $56 million in revenue over the life of the deal.

The Borough's Planning Board approved a 29-unit building at 17, 23, and 33 South Passaic Avenue on September 5, 2026, closing out a yearlong legal fight. The developer, Vertical Realty, had originally proposed 43 units with six affordable, then sued the Borough in August 2025 after officials left that larger version out of the Fourth Round plan. The settlement created a new overlay district capping the site at 29 units, four of them income-restricted.

The Borough is also shaping what comes next along that same stretch through the River Road Gateway I and II Redevelopment Plan. The zoning underneath it was already locked in as part of an earlier affordable housing settlement: it covers roughly 20 developable acres in the Gateway 1 area and permits up to 35 residential units per acre in buildings as tall as four stories. Because that zoning was part of the settlement agreement, the Borough cannot legally block development on it now, though a redevelopment plan can still shape what actually gets built there.

Chatham Township, next door and sharing the same state law, took a different route. Rather than rezoning private single-family blocks, the Township satisfied its Realistic Development Potential through a 100 percent municipally sponsored rental development on land the Township itself owns, the same approach that produced its earlier project, The Cornerstone, at 522 Southern Boulevard. The Township's obligation didn't disappear. It just didn't get placed inside a private neighborhood.

That split matters if you're evaluating "new construction" as a category in Chatham. In the Borough, new multifamily inventory is concentrated in a specific river-adjacent zone shaped by a legal settlement, not a builder's read of demand. In the Township, the comparable obligation was absorbed on a single town-owned parcel, leaving the rest of its single-family stock untouched by rezoning. A new-construction comp pulled from one town's corridor tells you very little about what's happening three streets over in the other town.

What This Means When You Run the Numbers

If you're pricing an offer or a listing in Chatham, treat every quoted figure as half the story until you know which half it's describing.

• Ask which town a listing or a market report is actually referencing before you anchor to its price. A Township comp is not a Borough comp, and a new-construction comp in either town isn't a resale comp.
• Check the actual property tax bill, not a town average. Both municipalities run an effective rate near 1.9 percent of market value, with roughly two-thirds of that funding the shared school district, but a specific parcel's bill is what shows up in escrow.
• If train access matters to your daily routine, confirm parking eligibility before you fall for a listing's commute pitch. A Township address does not carry Borough parking rights.
• If a new rental building nearby is part of your "how will this affect resale" thinking, know whether it sits inside a state-mandated overlay corridor or was built the way the Township chose, on land the town already owned. The two paths carry very different odds of the density spreading further.

A Few Direct Questions

Are Chatham Borough and Chatham Township really separate towns? Yes. They have separate mayors, separate councils, separate budgets, and separate zoning authority. They share a ZIP code, one train station, one library, and the School District of the Chathams as a combined system.

Can a Chatham Township resident get a permit for the train station lot? Not directly. The Borough issues the only annual permits for the station's two lots, and they're restricted to Borough residents. Township residents can apply through the Borough's waitlist or use metered daily parking when it's available.

Will new apartment construction spread into Chatham Township's single-family neighborhoods? Based on how each town has structured its current Fourth Round housing plan, the Township met its obligation through a municipally owned rental site rather than rezoning private residential blocks, while the Borough's new density is tied to specific overlay corridors near River Road and South Passaic Avenue. Zoning decisions can change over a ten-year cycle, so this is a read of the current plan, not a guarantee.

If you're trying to figure out which half of Chatham actually fits what you're looking for, or what a specific address's numbers really say once you strip out the noise, Best in Showing can walk you through it block by block. Get Your Free Home Valuation and we'll tell you which Chatham you're really looking at.