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Mercer Island – Residential Real Estate Market | Live Data

Western Washington Market Pulse

Mercer Island Real Estate Market Report(Residential Homes)

Live NWMLS data on Mercer Island home prices, inventory, days on market, and sale-to-list ratios — refreshed every month so your next move starts with current numbers, not last year’s headlines.

Residential Condos
View the Latest Data↓ Mercer Island City Guide
Live market signal

Mercer Island Market Pulse

Four indicators that tell you where the Mercer Island residential market is heading — sourced directly from NWMLS and refreshed monthly.

Data through June 2026
Residential · Mercer Island
Median Sales Price
$2.4M
June 2026
vs. May
▼8.3%
vs. '25
▼4.2%
View full chart
New Listings
49
June 2026
vs. May
▲16.7%
vs. '25
▲8.9%
View full chart
Homes for Sale
66
June 2026
vs. May
▲20.0%
vs. '25
●Flat
View full chart
Median Days on Market
10days
June 2026
vs. May
▲1 day
vs. '25
▲3 days
View full chart
Go deeper

A headline number rarely tells the whole story.

Scroll down for the complete view — every chart, every data point, three full years of context. Because the difference between a good decision and a great one is almost always in the trendline beneath the number.

See all graphs & data

Source: Northwest Multiple Listing Service® via InfoSparks (ShowingTime). Residential sales, Mercer Island segment. Reported figures are NWMLS data and are not guaranteed. Equal Housing Opportunity. Matthew Konsmo · Coldwell Banker Danforth.


June 2026 — Matthew’s Analysis of the Mercer Island Market

In June 2026, the median sales price across Mercer Island residential came in at $2.4M, down 8.3% from the month prior, while the median price per square foot stood at $857. Year over year the median is down 4.2%, a signal of some give in pricing power in this market.

On the supply side, Mercer Island saw 49 new listings come to market in June 2026, against 66 homes for sale at month end. At roughly 4.1 months of supply, that points to a relatively balanced market by the conventional rule of thumb (under three months favors sellers, over six favors buyers).

Demand stayed active: 22 pending sales and 20 closings in June 2026. The median home took about 10 days to sell — a fast pace that rewards prepared buyers. Sellers are realizing about 97.9% of their original list price — very close to their original asking price.

Taken together, the ten indicators describe a balanced Mercer Island market. Pricing has softened modestly year over year, while inventory and pace are the levers worth watching month to month. For a buyer or seller weighing a move, the right read is rarely a single headline number — it is the direction these series are trending together, which is exactly what the full charts below lay out.

Source: Northwest Multiple Listing Service® via InfoSparks (ShowingTime). Residential sales, Mercer Island segment. Analysis by Matthew Konsmo · Coldwell Banker Danforth. Figures are NWMLS data and are not guaranteed.


Market profile

Mercer Island vs. Its 5 Closest Markets (Data through June 2026)

Six dimensions, scored relative to the 6 markets shown — the farther a city's line reaches, the stronger it reads on that dimension. Tap a city in the legend to show or hide it.

Trailing 12-month view · steadier read for small markets
Loading data from Northwest Multiple Listing Service.
ℹ️ How to read: each axis is scored 15–100 relative to the cities on this chart. Market Speed and Market Tightness are inverted — fewer days on market and fewer months of supply score higher. Sales Volume is the trailing 12-month closed-sales total (or the latest month, in that view). Hover any point for the real number behind the score.
Source: Northwest Multiple Listing Service® via InfoSparks (ShowingTime) · Matthew Konsmo · Coldwell Banker Danforth

Mercer Island Housing Market Trends & Residential Sales Data

Thinking about buying or selling a Residential home on Mercer Island? This page tracks the Mercer Island real estate market using live Northwest Multiple Listing Service (NWMLS) data—updated monthly with median sale prices, days on market, closed sales, and inventory levels.

Because Mercer Island sits in Lake Washington between Seattle and Bellevue in King County—a sought-after, largely single-family community where waterfront and view homes command significant premiums, town-center living offers a different profile, and island supply stays constrained—tracking localized data is essential for understanding general market direction. Whether you are timing a purchase or preparing to list, the data below provides a clear, objective look at current market conditions.

Looking for a more localized market perspective? Explore our hyper-local neighborhood guides for a micro view of specific real estate markets across the island, from the North End, South End and Town Center.

Buying or selling a condo on Mercer Island? Condo Market Trends >


Live market data

Median Sales Price — Mercer Island Residential (June 2026)

NWMLS market data · Residential properties · Updated monthly

ℹ️ The median sale price is the midpoint of all residential sales in the month — half of homes sold for more and half for less — which makes it less sensitive to a few unusually high or low sales than an average.
Latest month
$2.4M
June 2026
Month-over-month
-8.3%
vs prior month
Year-over-year
-4.2%
vs same mo last yr
12-mo average
$2.46M
trailing 12 months
24-mo peak
$3.02M
February 2025
Loading data from Northwest Multiple Listing Service.
Market analysis

The Mercer Island residential median sales price fell 8.3% month-over-month in June 2026, reaching $2.4M. Compared to the same month a year ago, the reading is down 4.2%, indicating mild year-over-year softness in this market. The current $2.4M sits 2.5% below the trailing 12-month average of $2.46M.

All data from Northwest Multiple Listing Service®. InfoSparks © 2026 ShowingTime. Data as of 7/20/2026.
Live market data

New Listings — Mercer Island Residential (June 2026)

NWMLS market data · Residential properties · Updated monthly

ℹ️ New listings count the homes that came to market during the month. It is a forward-looking read on how much fresh supply sellers are bringing to buyers.
Latest month
49
June 2026
Month-over-month
+16.7%
vs prior month
Year-over-year
+8.9%
vs same mo last yr
12-mo average
26
trailing 12 months
24-mo peak
64
May 2025
Loading data from Northwest Multiple Listing Service.
Market analysis

The Mercer Island residential new listings rose 16.7% month-over-month in June 2026, reaching 49. Compared to the same month a year ago, the reading is up 8.9%, indicating modest year-over-year growth in this market. The current 49 sits 87.3% above the trailing 12-month average of 26.

All data from Northwest Multiple Listing Service®. InfoSparks © 2026 ShowingTime. Data as of 7/20/2026.
Live market data

Homes for Sale — Mercer Island Residential (June 2026)

NWMLS market data · Residential properties · Updated monthly

ℹ️ Homes for Sale is the active inventory at month end — the standing pool of choices a buyer has at any one time.
Latest month
66
June 2026
Month-over-month
+20.0%
vs prior month
Year-over-year
0.0%
vs same mo last yr
12-mo average
45
trailing 12 months
24-mo peak
66
May 2025
Loading data from Northwest Multiple Listing Service.
Market analysis

The Mercer Island residential homes for sale rose 20.0% month-over-month in June 2026, reaching 66. Compared to the same month a year ago, the reading is roughly flat, indicating relative year-over-year stability in this market. The current 66 sits 46.1% above the trailing 12-month average of 45.

All data from Northwest Multiple Listing Service®. InfoSparks © 2026 ShowingTime. Data as of 7/20/2026.
Live market data

Pending Sales — Mercer Island Residential (June 2026)

NWMLS market data · Residential properties · Updated monthly

ℹ️ Pending sales are listings that went under contract during the month — the most current signal of active buyer demand, ahead of closings.
Latest month
22
June 2026
Month-over-month
-4.3%
vs prior month
Year-over-year
-21.4%
vs same mo last yr
12-mo average
16
trailing 12 months
24-mo peak
28
June 2025
Loading data from Northwest Multiple Listing Service.
Market analysis

The Mercer Island residential pending sales fell 4.3% month-over-month in June 2026, reaching 22. Compared to the same month a year ago, the reading is down 21.4%, indicating notable year-over-year softening in this market. The current 22 sits 36.8% above the trailing 12-month average of 16.

All data from Northwest Multiple Listing Service®. InfoSparks © 2026 ShowingTime. Data as of 7/20/2026.
Live market data

Closed Sales — Mercer Island Residential (June 2026)

NWMLS market data · Residential properties · Updated monthly

ℹ️ Closed sales are transactions that completed and recorded during the month — demand that has fully crossed the finish line.
Latest month
20
June 2026
Month-over-month
-23.1%
vs prior month
Year-over-year
-16.7%
vs same mo last yr
12-mo average
17
trailing 12 months
24-mo peak
30
July 2024
Loading data from Northwest Multiple Listing Service.
Market analysis

The Mercer Island residential closed sales fell 23.1% month-over-month in June 2026, reaching 20. Compared to the same month a year ago, the reading is down 16.7%, indicating notable year-over-year softening in this market. The current 20 sits 20.6% above the trailing 12-month average of 17.

All data from Northwest Multiple Listing Service®. InfoSparks © 2026 ShowingTime. Data as of 7/20/2026.
Live market data

Median Days on Market — Mercer Island Residential (June 2026)

NWMLS market data · Residential properties · Updated monthly

ℹ️ Median days on market is the midpoint time from list to sale for homes that closed. Lower numbers mean homes are selling faster.
Latest month
10
June 2026
Month-over-month
+11.1%
vs prior month
Year-over-year
+42.9%
vs same mo last yr
12-mo average
26
trailing 12 months
24-mo peak
77
January 2026
Loading data from Northwest Multiple Listing Service.
Market analysis

The Mercer Island residential median days on market rose 11.1% month-over-month in June 2026, reaching 10. Compared to the same month a year ago, the reading is up 42.9%, indicating strong year-over-year gains in this market. The current 10 sits 61.5% below the trailing 12-month average of 26.

All data from Northwest Multiple Listing Service®. InfoSparks © 2026 ShowingTime. Data as of 7/20/2026.
Live market data

Months of Supply — Mercer Island Residential (June 2026)

NWMLS market data · Residential properties · Updated monthly

ℹ️ Months of supply estimates how long it would take to sell every active listing at the current pace. Under ~3 months favors sellers; over ~6 favors buyers.
Latest month
4.1
June 2026
Month-over-month
+24.2%
vs prior month
Year-over-year
+10.8%
vs same mo last yr
12-mo average
2.7
trailing 12 months
24-mo peak
4.1
June 2026
Loading data from Northwest Multiple Listing Service.
Market analysis

The Mercer Island residential months of supply rose 24.2% month-over-month in June 2026, reaching 4.1. Compared to the same month a year ago, the reading is up 10.8%, indicating strong year-over-year gains in this market. The current 4.1 sits 54.2% above the trailing 12-month average of 2.7.

All data from Northwest Multiple Listing Service®. InfoSparks © 2026 ShowingTime. Data as of 7/20/2026.
Live market data

Months of Supply (Closed) — Mercer Island Residential (June 2026)

NWMLS market data · Residential properties · Updated monthly

ℹ️ A second months-of-supply read based on closed sales rather than pending — a steadier, lagging confirmation of the balance between supply and demand.
Latest month
4.0
June 2026
Month-over-month
+21.2%
vs prior month
Year-over-year
+5.3%
vs same mo last yr
12-mo average
2.6
trailing 12 months
24-mo peak
4.0
June 2026
Loading data from Northwest Multiple Listing Service.
Market analysis

The Mercer Island residential months of supply (closed) rose 21.2% month-over-month in June 2026, reaching 4.0. Compared to the same month a year ago, the reading is up 5.3%, indicating modest year-over-year growth in this market. The current 4.0 sits 51.4% above the trailing 12-month average of 2.6.

All data from Northwest Multiple Listing Service®. InfoSparks © 2026 ShowingTime. Data as of 7/20/2026.
Live market data

% of Original Price — Mercer Island Residential (June 2026)

NWMLS market data · Residential properties · Updated monthly

ℹ️ Sale price as a percent of the original list price. Near or above 100% signals sellers are getting their asking price; below it signals negotiating room.
Latest month
97.9%
June 2026
Month-over-month
0.0%
vs prior month
Year-over-year
0.0%
vs same mo last yr
12-mo average
97.0%
trailing 12 months
24-mo peak
102.5%
February 2026
Loading data from Northwest Multiple Listing Service.
Market analysis

The Mercer Island residential % of original price held relatively flat month-over-month in June 2026, reaching 97.9%. Compared to the same month a year ago, the reading is roughly flat, indicating relative year-over-year stability in this market. The current 97.9% sits 1.0% above the trailing 12-month average of 97.0%.

All data from Northwest Multiple Listing Service®. InfoSparks © 2026 ShowingTime. Data as of 7/20/2026.
Live market data

Price per Sq Ft — Mercer Island Residential (June 2026)

NWMLS market data · Residential properties · Updated monthly

ℹ️ Median sale price divided by finished square footage — a size-adjusted price read that lets you compare value across different home sizes.
Latest month
$857
June 2026
Month-over-month
+15.5%
vs prior month
Year-over-year
+9.5%
vs same mo last yr
12-mo average
$810
trailing 12 months
24-mo peak
$1,013
February 2026
Loading data from Northwest Multiple Listing Service.
Market analysis

The Mercer Island residential price per sq ft rose 15.5% month-over-month in June 2026, reaching $857. Compared to the same month a year ago, the reading is up 9.5%, indicating modest year-over-year growth in this market. The current $857 sits 5.9% above the trailing 12-month average of $810.

All data from Northwest Multiple Listing Service®. InfoSparks © 2026 ShowingTime. Data as of 7/20/2026.

Neighboring markets

How Mercer Island Compares to Nearby Markets (Data through June 2026)

Median sales price, price per square foot, and median days on market across Mercer Island and its 5 closest NWMLS markets. Open any city for its full Market Pulse.

City Median Sales Price Price / SqFt Median Days on Market
Mercer Island Home market $2,400,000 baseline $857 baseline 10 days baseline
Beaux Arts Village → 1.4 mi away · View Market Pulse $2,277,300 ▼ −5.1% vs Mercer Island $897 ▲ +4.7% vs Mercer Island 4 days ▼ −6 days vs Mercer Island
Bellevue → 2.9 mi away · View Market Pulse $1,750,000 ▼ −27% vs Mercer Island $680 ▼ −21% vs Mercer Island 11 days ▲ +1 days vs Mercer Island
Medina → 3.5 mi away · View Market Pulse $3,727,500 ▲ +55% vs Mercer Island $1,102 ▲ +29% vs Mercer Island 9 days ▼ −1 days vs Mercer Island
Newcastle → 3.8 mi away · View Market Pulse $1,242,500 ▼ −48% vs Mercer Island $568 ▼ −34% vs Mercer Island 11 days ▲ +1 days vs Mercer Island
Clyde Hill → 4.2 mi away · View Market Pulse $4,000,000 ▲ +67% vs Mercer Island $847 ▼ −1.2% vs Mercer Island 3 days ▼ −7 days vs Mercer Island
ℹ️ Price and pace figures reflect each city's most recent month with closed sales — in small markets a month with no closings simply rolls forward once a sale closes. Distances are between city centers.
Source: Northwest Multiple Listing Service® via InfoSparks (ShowingTime) · Matthew Konsmo · Coldwell Banker Danforth

Why Direct Comps Reign Supreme

While median and average prices are useful for identifying broad market shifts, they are often too “macro” when you are trying to value a specific front door. To find the true market value of a Mercer Island home, nothing beats a direct comparable (comp).

Contact Matthew for a Comparable Market Analysis on your home >

Direct comps account for the critical nuances that broader statistics completely ignore:

Hyper-Locality Matters

Mercer Island is the perfect argument for looking past a ZIP code—the entire island shares one (98040), yet values vary enormously across it. West-side homes capture Seattle skyline and sunset views, while the east side looks toward Bellevue, the Cascades, and the sunrise; that orientation alone can move value beyond 5% to 10%. Lake Washington waterfront with a private dock is a market unto itself, and walkable proximity to the Town Center—now served by the 2 Line—commands its own premium. North end, south end, waterfront, and interior all behave differently. A single islandwide average can’t see this; a direct comp reflects the reality of the specific lot and outlook.

Accounting for Quality and Finishes

Broad data points can’t distinguish between builder-grade finishes and high-end custom upgrades. Whether a home features standard laminate or custom mitered-edge quartz, direct comps allow for “line-item” adjustments. Mercer Island is an active teardown-and-rebuild market, so an original mid-century home and a ground-up modern build can sit on comparable lots at very different values—and on waterfront, frontage, dock, and orientation must each be weighed on their own. Line-item adjustments ensure the premium investments made in a home are actually reflected in its valuation.

The “Vibe” Factor

Statistics often treat square footage as equal, but buyers don’t. A 1960s daylight rambler held for decades and a 2026 modern build might share the exact same footprint, yet they appeal to entirely different buyer pools. Using direct comps ensures you’re comparing “apples to apples” by matching the architectural style, character, and lifestyle appeal of a property.

The Bottom Line: If you want to know what a home is worth in today’s market, look past the ZIP code averages and focus on the three or four most similar properties that have closed nearby. That’s where the real data lives. Get the facts behind your home’s value. Contact me for a personalized CMA based on your Mercer Island property’s specific characteristics and current market data.

Matthew Konsmo

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Matthew Konsmo

Associate Real Estate Broker


Serving buyers and sellers with integrity and expertise. Matthew is an Associate Real Estate Broker with Coldwell Banker Danforth, helping clients navigate the Pacific Northwest market with confidence.

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Matthew Konsmo Real Estate Broker | Coldwell Banker Danforth | Equal Housing Opportunity

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