Metro-North is one of the defining physical and economic features of Westchester County real estate. The three lines that serve Westchester — the Harlem Line, the Hudson Line, and the New Haven Line — knit together a county of 40-plus municipalities with service patterns ranging from express runs that reach Grand Central in under 30 minutes to local stops with hourly headways. The variation in access those service patterns create is reflected, in ways both visible and subtle, in property prices throughout the county.

As an appraiser, I deal with transit proximity adjustments regularly. It is not always a premium — sometimes it is a penalty, and sometimes the two effects operate simultaneously on the same property, pulling in opposite directions. Getting this adjustment right matters for accurate appraisals, and in estate and divorce work, it can be a genuine point of contention between parties. Here is how the analysis actually works.

The Three Metro-North Lines Serving Westchester

Understanding transit proximity in Westchester starts with understanding what Metro-North actually offers here, because the three lines are not equivalent from a property value perspective.

The Harlem Line runs from Grand Central through the Bronx and up through central and northern Westchester, serving municipalities including Tuckahoe, Crestwood, Scarsdale, White Plains, Hartsdale, Ardsley-on-Hudson, Pleasantville, Chappaqua, Pleasantville, Mount Kisco, and beyond into Putnam County. It is the busiest line in Westchester and offers some of the county's most frequent service, including peak-hour express trains that bypass multiple stops.

The Hudson Line follows the eastern bank of the Hudson River northward from Yonkers through Hastings-on-Hudson, Dobbs Ferry, Ardsley-on-Hudson, Tarrytown, Ossining, Croton-on-Hudson, and Peekskill. It offers scenic river views along much of the route and connects to some of the county's most distinctive residential communities. Service frequency is somewhat lower than the Harlem Line for most of the day.

The New Haven Line serves southeastern Westchester — Port Chester, Rye, Harrison, Mamaroneck, Larchmont, New Rochelle, and Pelham — before crossing into Connecticut. It connects to the highest-frequency service corridor in the Metro-North system and provides access to both Grand Central and Penn Station via the cross-Bronx routing.

Each line has its own service pattern, and within each line, individual stops vary considerably in express versus local service. That variation is central to understanding how transit proximity affects value.

Express vs. Local Service: Why It Matters for Pricing

Not all Metro-North stops are created equal. On the Harlem Line, for example, Scarsdale and White Plains are express stops with peak-hour trains reaching Grand Central in roughly 30 to 35 minutes. Stations farther down the line or served only by locals may face 50- to 60-minute travel times on the same route. That 20-plus minute difference in commute time is a material difference in the product being offered — and market data in Westchester consistently shows that buyers price access accordingly.

Properties within walking distance of an express stop command a measurable premium over otherwise comparable properties near local-only stops. Academic research on transit-oriented development and appraiser field experience in this market both point in the same direction: access to frequent, fast service is valued; infrequent, slow service generates a smaller or negligible premium.

The calculus involves more than just schedule. Express stops often have more parking, more frequent off-peak service, and better infrastructure — all of which amplify the access premium. A 5-minute walk to a 32-minute express to Grand Central is a significantly different proposition from a 5-minute walk to an hourly local that takes 55 minutes and requires a transfer.

Distance From the Station: The Sweet Spot and the Penalty Zone

Transit proximity is not a linear value driver. It has a spatial structure, and understanding that structure is essential for appraisal accuracy.

The Access Premium Zone

Research and market observation consistently show that properties within roughly a quarter to half-mile walking distance of a commuter rail station capture a transit access premium relative to otherwise comparable properties farther away. In Westchester's denser, more urban communities — Larchmont, Pelham, New Rochelle, Mamaroneck, Tuckahoe — the premium for being within easy walking distance of a well-served station can be meaningful, and it is directly attributable to the access advantage those properties offer.

The premium tends to peak somewhere in the two-to-five block range from the station: close enough to walk comfortably with a briefcase or a bag of groceries, far enough that the station's immediate physical environment — parking lots, commercial activity at the station, early-morning idling — does not intrude.

The Noise and Disruption Penalty

Properties immediately adjacent to the tracks or the station itself may face a different dynamic. Freight trains and Metro-North service generate noise, and homes within direct line of sight or acoustic range of the tracks can exhibit a measurable discount relative to comparable properties a few streets removed. This is particularly true along the Hudson Line, where the tracks run at grade for much of their length through residential communities, and along portions of the New Haven Line through southern Westchester.

The result is a non-linear distance gradient: prices may actually be lower immediately adjacent to the tracks, higher a few blocks away (capturing the access benefit without the noise), and then gradually lower again as walking distance increases beyond the comfortable range and the access premium fades.

An appraiser who treats transit proximity as simply "closer is always better" will produce inaccurate results for properties immediately adjacent to the infrastructure. The correct analysis requires understanding both forces and measuring the net effect from market data.

How Appraisers Measure Transit Proximity as a Locational Adjustment

Transit proximity is a locational attribute in appraisal methodology — not a physical characteristic of the property itself, but a characteristic of where the property sits relative to transportation infrastructure. In the sales comparison approach, locational differences between the subject property and comparable sales must be identified and, when material, adjusted.

Paired Sales Analysis

The preferred method for quantifying a transit proximity adjustment is paired sales analysis: finding two sales that are as similar as possible in all physical characteristics but differ in their distance from a station, and isolating the price difference attributable to that distance. In practice, perfect pairs are rare, but with sufficient data — which Westchester's active market generally provides — a well-supported adjustment can be extracted.

For example: if two comparable three-bedroom colonials in the same municipality, with similar lot sizes and condition, sell at prices that differ by $35,000 and the primary distinguishing factor is a five-minute versus fifteen-minute walk to the station, that price differential is market evidence for a transit proximity adjustment of roughly $35,000. Appraisers build these conclusions from multiple pairs where possible, weighting the results toward the most reliable data.

Regression Analysis

In larger markets or where sufficient data exists, statistical regression analysis can quantify the relationship between transit proximity and price across a broader dataset, controlling for other variables. This approach is increasingly common in litigation-grade appraisals where the transit adjustment is contested.

Adjustment Direction and Magnitude

The direction of the adjustment depends on the relative position of the subject and its comps. If the subject is closer to an express station than its comparables, the appraiser adds a positive adjustment to the comps (making them appear more like the superior subject). If the subject is farther or adjacent to the tracks with a noise penalty, the adjustment runs the other direction.

In Westchester, supported transit proximity adjustments for residential properties near well-served express stops can range from a few percentage points to 5–8% of value or more in highly transit-dependent submarkets. The magnitude depends on the specific location, the quality of service, and what the market data actually supports — generalizations are less reliable than a well-executed paired sales analysis for the specific submarket.

Transit Adjustments in Estate and Divorce Appraisals

The transit proximity adjustment becomes particularly important — and potentially contentious — in estate and divorce appraisals, where two appraisers working from the same property may arrive at materially different conclusions.

Consider a property one block from a Harlem Line express station in a central Westchester community. One appraiser selects comparables from within the same immediate area and makes minimal transit adjustments because the comps share the same access characteristics. A second appraiser selects comps from a broader geographic area, some of which are farther from the station, and applies an upward adjustment to bring those comps in line with the subject's superior access — potentially producing a higher value conclusion.

Or consider the inverse: a property directly adjacent to the Hudson Line tracks, where one appraiser recognizes and quantifies the noise and disruption discount while another focuses only on the access premium and arrives at a higher number. Both appraisers may be working from legitimate methodology, but their scope of comparables and their treatment of the transit variable lead to different answers.

In estate proceedings, where the value conclusion affects tax calculations and distribution of assets among heirs, and in divorce proceedings, where it affects equitable distribution, these differences are not academic. An expert witness appraiser who can explain and defend the transit adjustment methodology — with market data, paired sales, and clear reasoning — is far better positioned to have their analysis accepted by a court or arbitrator than one who either ignores the adjustment or applies it without support.

Transit proximity is one of the more technically demanding adjustments in Westchester appraisal work — not because the concept is complicated, but because the evidence needed to support it must come from careful market analysis rather than assumption.

Practical Notes by Line

Harlem Line: The strongest transit premiums in Westchester tend to cluster around Harlem Line express stops in central Westchester communities. The frequency and speed of service to Grand Central, combined with substantial parking at major stations, creates high demand for properties within convenient distance. The noise penalty zone is generally narrower along this line because much of the right-of-way passes through less densely settled terrain and in some areas through tunnels or cut sections that reduce acoustic impact on adjacent properties.

Hudson Line: The at-grade rail corridor along the river creates more pronounced noise and disruption for immediately adjacent properties, particularly in densely settled portions of southern Westchester. Properties on the river side of the tracks face a different trade-off than those on the landward side. The access premium still exists for station proximity, but the penalty zone for track adjacency is often more significant here than on other lines.

New Haven Line: Southern Westchester's most densely served corridor, with some of the county's highest service frequencies. Express service to Grand Central from stations like Larchmont, Mamaroneck, and Rye provides fast connections, and the proximity premium in these communities reflects that access. The cross-Bronx routing also gives New Haven Line commuters a Penn Station option via the Harlem-125th Street stop, adding flexibility that some buyers value.

What This Means if You Are Buying, Selling, or in Litigation

If you are buying or selling a property near a Metro-North station in Westchester, the transit variable should be a conscious part of your pricing analysis — not assumed, but measured. A listing price set without accounting for transit proximity may be leaving money on the table or pricing above what the market will bear, depending on the specific location.

If you are an attorney, accountant, or financial advisor involved in an estate or divorce that includes Westchester real estate near a Metro-North station, the transit adjustment is worth scrutinizing in any appraisal you receive. Ask for the comparable sales used, examine their proximity to the same or comparable stations, and ask how any distance differential was handled. A well-supported appraisal will have clear answers. One that glosses over the transit variable may be understating or overstating value in ways that affect your client's interests.