Observer
ObserverCondo Index

Greater Boston condos sold for a typical $601 a square foot in the three months to October.

The Observer Condo Index stands at 101.5 for October 2026 (January 2026 = 100), down 0.5 from September. In October, 38% of the 621 condos that sold went for their first asking price or more.

By the Observer Markets Desk · Verified market data, updated November 10, 2026 · New edition on the 5th of each month

Index, October 2026101.5down 0.5 from September
Dec 2025100 = Jan 2026Oct 2026

Key factsAs of November 10, 2026

  • The Observer Condo Index for October 2026 is 101.5 (January 2026 = 100): in the three months to October 2026, the typical Greater Boston condo sold for $601 a square foot.
  • In October 2026, 621 condos sold in Greater Boston for a typical $710,000, after a median 18 days to an accepted offer.
  • 38% of Greater Boston condos sold in October 2026 went for their first asking price or more.
  • The index is down 0.5 from September (102.0).
  • In the week of Nov 2, 3,089 condos were for sale across Greater Boston and 122 went under agreement.
  • Among towns with 40 or more condo sales in each period, price per square foot rose most in Boston (+4.5%) and fell most in Quincy (-7.5%), latest 3 months against the 3 before.

Cite as: “Observer Condo Index, October 2026,” Boston Real Estate Observer, https://bostonrealestateobserver.com/condo-index/ (verified market data as of November 10, 2026).

Condo prices per square foot are 1.5% higher than in January 2026

Observer Condo Index: the typical sale price per square foot of Greater Boston condos sold in each month and the two before it. January 2026 = 100.

101.5
Dec 25Oct 26
The latest month can shift slightly as late sales are recorded. Source: Verified market data; analysis by the Observer Markets Desk.
Show the numbers
MonthIndexPer sq ft, 3 monthsPer sq ft, monthSalesTypical priceDays to offerAt or above asking
December 202598.5$583$571746$671,5002829%
January 2026100.0$592$614497$748,5003330%
February 202698.4$583$568460$675,0003035%
March 202699.6$590$585630$699,9001642%
April 2026100.0$592$613782$740,0001251%
May 2026104.1$617$632932$750,0001050%
June 2026106.5$631$6381,133$745,0001147%
July 2026105.9$628$6111,056$700,0001640%
August 2026104.9$621$612818$723,0002136%
September 2026102.0$604$580632$659,0002729%
October 2026101.5$601$600621$710,0001838%

Buyers took a typical 18 days to agree on a Greater Boston condo in October

Median days from listing to an accepted offer, condos sold each month.

4020
18
Dec 25Oct 26
Source: Verified market data; analysis by the Observer Markets Desk.
Show the numbers
MonthDays to an accepted offerSales
December 202528746
January 202633497
February 202630460
March 202616630
April 202612782
May 202610932
June 2026111,133
July 2026161,056
August 202621818
September 202627632
October 202618621

3,089 condos are for sale across Greater Boston, up from 2,877 in the week of Aug 10

Condos for sale at the end of each week, 47 Greater Boston cities and towns.

4,0002,000
3,089
Aug 10Nov 2
Source: Verified market data; analysis by the Observer Markets Desk.
Show the numbers
Week ofFor saleWent under agreementNew listings
Aug 102,877147201
Aug 172,808134164
Aug 242,782110171
Aug 312,488128143
Sep 72,977103671
Sep 143,224182508
Sep 213,306173332
Sep 283,305154400
Oct 53,363154310
Oct 123,417127277
Oct 193,378147206
Oct 263,127156218
Nov 23,089122248

Town by townPast 12 months, towns with 30+ condo sales

TownSalesTypical pricePer sq ftDays to offerAt or above askingPer sq ft, last 3 months vs 3 before
Boston3,419$785K$8092235%+4.5%
Cambridge542$950K$9211445%-6.4%
Somerville408$850K$7471347%-3.1%
Brookline386$1.04M$8221537%+0.6%
Quincy317$500K$4771343%-7.5%
Newton316$1.08M$5591935%-0.7%
Salem262$515K$4291644%-4.0%
Watertown224$720K$5261347%+3.3%
Arlington213$881K$622855%-4.0%
Medford185$685K$5251937%-3.8%
Weymouth156$375K$3791440%+1.9%
Waltham153$660K$4951642%+1.3%
Revere146$430K$4532532%-4.4%
Natick144$440K$4381336%+3.4%
Lynn144$380K$3722542%+0.4%
Framingham122$345K$3572134%-8.7%
Woburn114$579K$4641443%+2.6%
Canton108$608K$4291354%+11.0%
Winthrop93$512K$4752037%-6.5%
Wakefield92$629K$5331849%+10.5%
Chelsea90$450K$4332827%-13.9%
Stoneham88$425K$4321147%+5.5%
Malden85$430K$4671549%-10.1%
Peabody83$485K$3691449%–
Braintree79$475K$4242028%-7.6%
Reading66$620K$4531156%–
Melrose65$555K$475958%–
Marblehead59$599K$5491739%–
Winchester56$948K$533857%–
Swampscott55$479K$4021142%–
Everett52$465K$4671946%–
Needham52$1.11M$5143627%–
Bedford50$950K$4581146%–
Belmont50$860K$5781238%–
Wellesley50$1.25M$7381534%–
Dedham46$501K$4802352%–
Norwood46$489K$3901650%–
Saugus45$552K$3612138%–
Milton43$740K$5702744%–
Concord41$820K$5551929%–
Wayland40$805K$3751257%–
Lexington37$1.05M$5462451%–

Last 3 months = the three complete months to October 2026. Shown where both periods have 20+ sales. See the busiest condo buildings.

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The Observer Condo Index stood at 101.5 in October 2026 (January 2026 = 100), down 0.5 points from September, according to the Boston Real Estate Observer. Greater Boston condos sold for a typical $601 a square foot in the three months to October.

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Observer Condo Index, October 2026: 101.5, down 0.5 from September

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“Observer Condo Index, October 2026,” Boston Real Estate Observer, https://bostonrealestateobserver.com/condo-index/ (verified market data as of November 10, 2026).

The chart on your site

Paste this code where you want it. It updates itself every month.

<iframe src="https://bostonrealestateobserver.com/embed/condo-index/" title="Observer Condo Index" width="100%" height="520" style="border:0" loading="lazy"></iframe>

Every month since January 2026 as data: /condo-index/data.json. Quoting a number from a past month? Use that month's edition, which never changes.

How the index works

Every condo sale in 47 Greater Boston cities and towns (the same area as our building rankings), from verified market data, grouped by the month it closed. The index is the typical (median) sale price per square foot of every sale in the latest three months, pooled, so one month's mix of luxury and starter units can't swing it. It is divided by the same figure for January 2026 and multiplied by 100. Price per square foot uses the living area filed with each sale; units under 200 square feet are left out. Only complete months count. The recipe never changes, so any month can be compared with any other.