Boston Luxury Condo Intelligence · Est. 2001
The premier sales data + reporting platform

BOSTONCONDOMINIUMINTELLIGENCE

Stop relying on incomplete and scattered sales data. CURVE gives you the most complete Boston condo sales data, in-depth unit history, analytics, interactive displays, and client-ready reports in one intelligence platform.

106
108
136
131
171
233
367
442
446
Pier 4
22 Lib.
45 Prov.
Raffles
1 Dalton
1 Charles
Ritz Avery
Mill.Twr
Echelon
10 Farnsworth100 Beacon100 Shawmut14 West Broadway152 Old Colony Ave180 Beacon180 Commonwealth Ave184-190 Commonwealth Ave21-23 Temple22 Liberty232 Old Colony Ave25 Beacon25 Channel Center285 Columbus Lofts293-295 Commonwealth Ave31-33 Irving319 A Street35 Channel Center360 Newbury416 Marlborough45 Province48 Beacon485-495 Harrison Ave50 Liberty687-697 Massachusetts Ave761 E Sixth St82-90 Massachusetts Ave92 Beacon97-99 Mt VernonAlleleArtBlockAtelier 505Battery WharfBeacon TowersBlackstone ParkBraemoreBurrage MansionCabot HouseCharlesviewCopley CondominiumCourt Square PressD4Dockside Place / 15 SleeperDockside Place / 33 SleeperEchelon SeaportFolio BostonForecaster 121Fort Point PlaceFour Seasons PlaceFP3GarrisonGrandviewHarbor TowersHarborviewIntercontinentalLe JardinLennon CourtLovejoy WharfMacallen BuildingMaison VernonMandarin OrientalMillennium PlaceMillennium TowerMuse Legacy BuildingOne CharlesOne DaltonParkside ResidencesPhillips CourtPier 4Port45Pray Brothers CarriageRaffles BostonResidences at 566 ColumbusRitz-Carlton Avery StRitz-Carlton South StationRollins SquareRowes WharfSepiaSienaSlip45Slip65St. CloudSt. Regis ResidencesStrada 234The ArcherThe BelvedereThe BlakeThe BoulevardThe Carlton HouseThe CeintureThe ClarendonThe CosmopolitanThe HeritageThe LucasThe MeadsThe MetropolitanThe MezzThe ParkerThe PenmarkThe PierceThe PrinceThe QuinnThe SomersetThe SudburyThe WhitwellThree Douglass ParkTremont on the CommonTrinity PlaceTrolley HouseW BostonWashington UnionWest Side CondoWindsor PlaceWinthrop CenterZero Marlborough10 Farnsworth100 Beacon100 Shawmut14 West Broadway152 Old Colony Ave180 Beacon180 Commonwealth Ave184-190 Commonwealth Ave21-23 Temple22 Liberty232 Old Colony Ave25 Beacon25 Channel Center285 Columbus Lofts293-295 Commonwealth Ave31-33 Irving319 A Street35 Channel Center360 Newbury416 Marlborough45 Province48 Beacon485-495 Harrison Ave50 Liberty687-697 Massachusetts Ave761 E Sixth St82-90 Massachusetts Ave92 Beacon97-99 Mt VernonAlleleArtBlockAtelier 505Battery WharfBeacon TowersBlackstone ParkBraemoreBurrage MansionCabot HouseCharlesviewCopley CondominiumCourt Square PressD4Dockside Place / 15 SleeperDockside Place / 33 SleeperEchelon SeaportFolio BostonForecaster 121Fort Point PlaceFour Seasons PlaceFP3GarrisonGrandviewHarbor TowersHarborviewIntercontinentalLe JardinLennon CourtLovejoy WharfMacallen BuildingMaison VernonMandarin OrientalMillennium PlaceMillennium TowerMuse Legacy BuildingOne CharlesOne DaltonParkside ResidencesPhillips CourtPier 4Port45Pray Brothers CarriageRaffles BostonResidences at 566 ColumbusRitz-Carlton Avery StRitz-Carlton South StationRollins SquareRowes WharfSepiaSienaSlip45Slip65St. CloudSt. Regis ResidencesStrada 234The ArcherThe BelvedereThe BlakeThe BoulevardThe Carlton HouseThe CeintureThe ClarendonThe CosmopolitanThe HeritageThe LucasThe MeadsThe MetropolitanThe MezzThe ParkerThe PenmarkThe PierceThe PrinceThe QuinnThe SomersetThe SudburyThe WhitwellThree Douglass ParkTremont on the CommonTrinity PlaceTrolley HouseW BostonWashington UnionWest Side CondoWindsor PlaceWinthrop CenterZero Marlborough

The most complete condominium transaction dataset in Boston.

CURVE pieces together the fragmented data beneath every serious real estate market read: legal units, developer sales, resales, combo sales, deed context, appreciation, gain/loss history, and more.

0+
Verified Closed Sales & Events
Records sourced from the Suffolk Registry of Deeds for the most complete data set in Boston
'71'80'90'00'10'20'26
0 yrs
Of Historical Data
Every sale since Dec 1971 — full market cycles
1971Start
2008Crash
2016Peak
2020COVID
2026Today
0%
Transaction level transparency
Full unit details, transaction history, and ownership economics centralized into one platform
Current + historical condo unit details
Developer sale, resales, combo + restricted sales
Appreciation, hold period, gain vs loss metrics
Beds, baths, sqft, Percent Interest, Registry of Deeds + assessor cross-checks.

Built for people who need to know the market and specific transactions better than anyone else in the room.

Agents, brokerages, investors, developers, lenders, and appraisers use CURVE when knowing your market's data matters makes a difference.

Agents & Brokers

Build real transaction expertise before the client conversation starts.

CURVE helps agents and brokers understand the transaction record behind the market, not just pull a few surface comps. Use it to sharpen your own read, prepare listing strategy, support buyer conversations, explain pricing, and show clients the sales history that actually matters: developer sales, resales, combo sales, appreciation, layouts, price per foot, and comparable activity across the market.

Know the transactions. Explain the market. Earn the trust.
Brokerages

Raise the market standard across the whole firm.

CURVE gives brokerage leadership a shared intelligence layer for the transaction data, neighborhoods, and assets where the firm competes. Agents walk into buyer consults, seller meetings, pricing reviews, and follow-ups with the same verified sale history, analytics, and client-ready reporting. The value is consistency: better-prepared agents, stronger advice, and a brokerage brand that feels more informed than everyone else in the room.

Make better preparation part of the brokerage brand.
Investors

Underwrite the transaction history, not the brochure.

Investors need to know how a unit has actually traded, appreciated, and performed against the surrounding market. CURVE shows sale history, prior basis, appreciation, hold periods, gain/loss outcomes, unit mix, and price-per-foot movement so you can compare opportunities with discipline. Use it before buying, before selling, and while tracking where value is moving.

See the basis. Understand the upside. Avoid the guesswork.
Developers

Understand where your assets sit in the market now.

Developers need more than launch pricing. CURVE shows how comparable transaction sets have absorbed, resold, appreciated, and held value across cycles, price bands, bedroom mixes, and unit sizes. Use it to understand current resale performance, buyer demand, competitive positioning, and where the market is moving before the next pricing, acquisition, financing, or asset-management decision.

Read the market clearly, even when new supply is quiet.
Lenders

Validate collateral with the transaction history behind the asset.

Neighborhood comps miss the transaction-level value drivers inside luxury condo assets. CURVE gives lenders unit-level sale history, prior-sale context, appreciation, financing signals, price-per-foot movement, and resale performance so collateral review is grounded in the exact market the borrower is entering. It helps credit teams understand support, risk, and liquidity before the questions start.

Sharper collateral review. Fewer blind spots.
Appraisers

Build valuations from transaction evidence, not guesswork.

Appraisers need defensible support when asset premiums, floor position, layout, and unit size matter. CURVE surfaces the closed sale history, unit characteristics, prior-sale basis, appreciation, and comparable transaction activity needed to explain adjustments with less guesswork. It is built for valuation work where the wrong comp set can distort the entire conclusion.

Defend the value with better underlying evidence.
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The premier data, analytics, and reporting platform every professional needs

CURVE shows what actually happened in the market, cleans the fragmented and scattered transaction context, and turns verified data into analysis you can leverage with clients.

Full-market coverage
×MLS sold data

MLS only shows what was listed there. Many luxury condos, developer closings, private resales, off-market trades, package deals, and high-end transfers never hit the MLS.

CURVE

CURVE pulls every sale, deed event, unit record, and source-backed transaction from the Registry of Deeds, assessor database, and other verified sources to show the full market, not just the MLS-visible slice.

Comp-quality sale context
×MLS sold data

MLS can tell you when some units are sold. It cannot tell you whether the sale was developer inventory, a true resale, a combo residence, a restricted transfer, or a deed event that should not be treated as a normal comp.

CURVE

CURVE classifies the sale before you use it: developer sale vs resale, combo-sale logic and history, deed context, prior-sale basis, appreciation metrics, and transfer quality so the wrong record does not distort your analysis.

Unit lineage over time
×MLS sold data

MLS shows you basic information and listing remarks, but it is still a point-in-time listing record. MLS does not show how the unit has traded over time or whether its last sale actually supports today’s value.

CURVE

CURVE connects the unit’s sale lineage: prior prices, hold period, appreciation, gain/loss, cash vs mortgage, resale order, and comparable activity across the sales data so you can explain why the unit should command its number.

Defensible market logic
×MLS sold data

MLS forces agents to improvise the market read: download comps, copy screenshots, build a CMA, remember property quirks, and manually explain why one sale matters more than another.

CURVE

CURVE turns cleaned records into market logic: appreciation, gain vs loss, bedroom mix, sqft bands, price ranges, sale cycles, and transaction performance that make pricing, buyer advice, and seller conversations actually defensible.

Client-ready output
×MLS sold data

MLS gives you raw records. You then spend hours piecing together comps, screenshots, notes, and proposals that may still be based on an incomplete view of the transaction history and market.

CURVE

CURVE turns in-depth data analysis into client-ready assets: interactive reports, unit sale histories, custom data feeds, tracking updates, and shareable links that make your expertise visible before you even start explaining.

The point is simple: CURVE gives you the data, analysis, and reports that MLS cannot.
See CURVE

CURVE Plans

Plus

$95/month
Start 7-day free trial
Verified sales historyBoston condo transaction data analyzed by unit, closing, developer sale vs resale, combo sales, deed context, and more.
Unit research workflowCheck a unit’s layout, financing, prior sales, appreciation, and comparable activity across the broader sales record.
Advanced market analyticsSee all data plus appreciation and gain vs loss metrics by bedroom, square feet, price range, and sale cycle.
Client-ready report studioCreate polished, fully custom interactive reports for deep analysis, listing prep, pricing, buyers, and live presentations.
Sharing + TrackingShare reports, unit sale histories, and custom data feeds. Track saved searches, client criteria, and new market activity.

Brokerage

Custom15 agent minimum
Get in touch
Everything in PlusEvery agent gets verified sales history, unit research, advanced analytics, report studio, sharing, and Tracking.
Team-wide agent accessGive agents the same professional-grade market intelligence and presentation layer without each person rebuilding their own process.
Brokerage coverage strategyOrganize market and neighborhood coverage around where the firm competes, recruits, farms, and wants to win more listings.
Consistent client standardsMake every seller, buyer, and investor conversation feel sharper with shared reports, data views, and brokerage-quality materials.
Firm-wide data advantageTurn CURVE into a visible brokerage differentiator: better-prepared agents, stronger client trust, and more defensible market advice.

Building intelligence index

Every Boston Condo Building. Every Sale. Every Unit.

A live index of Boston luxury condo buildings, sale depth, resale activity, and unit-level history. Click any building to unlock its dedicated data workspace.

Live synced May 20, 9:35 AM EDT
Building
Avg $/SF (last 12 mo)
Units
Total Sales
Resales
History
Ritz-Carlton South Station
Downtown
$2,101/SF
166
28
0
Mar 2026–May 2026
$2,101/SF
Avg $/SF (last 12 mo)
166
Units
28
Sales
0
Resales
Mar 2026–May 2026
History
Winthrop Center
Downtown
$2,052/SF
317
142
2
Apr 2023–May 2026
$2,052/SF
Avg $/SF (last 12 mo)
317
Units
142
Sales
2
Resales
Apr 2023–May 2026
History
One Dalton
Back Bay
$2,680/SF
171
207
44
May 2019–May 2026
$2,680/SF
Avg $/SF (last 12 mo)
171
Units
207
Sales
44
Resales
May 2019–May 2026
History
Raffles Boston
Back Bay
$2,644/SF
131
138
11
Jun 2023–May 2026
$2,644/SF
Avg $/SF (last 12 mo)
131
Units
138
Sales
11
Resales
Jun 2023–May 2026
History
Millennium Tower
Downtown
$1,444/SF
442
679
242
Jul 2016–May 2026
$1,444/SF
Avg $/SF (last 12 mo)
442
Units
679
Sales
242
Resales
Jul 2016–May 2026
History
Mandarin Oriental
Back Bay
$2,114/SF
76
164
90
Aug 2008–Apr 2026
$2,114/SF
Avg $/SF (last 12 mo)
76
Units
164
Sales
90
Resales
Aug 2008–Apr 2026
History
Echelon Seaport
Seaport
$1,689/SF
446
507
70
Dec 2019–May 2026
$1,689/SF
Avg $/SF (last 12 mo)
446
Units
507
Sales
70
Resales
Dec 2019–May 2026
History
Pier 4
Seaport
$2,026/SF
106
158
52
May 2019–Apr 2026
$2,026/SF
Avg $/SF (last 12 mo)
106
Units
158
Sales
52
Resales
May 2019–Apr 2026
History
50 Liberty
Seaport
$2,510/SF
120
181
61
Mar 2018–Mar 2026
$2,510/SF
Avg $/SF (last 12 mo)
120
Units
181
Sales
61
Resales
Mar 2018–Mar 2026
History
Millennium Place
Downtown
$1,071/SF
256
470
214
Oct 2013–Apr 2026
$1,071/SF
Avg $/SF (last 12 mo)
256
Units
470
Sales
214
Resales
Oct 2013–Apr 2026
History
45 Province
Downtown
$1,170/SF
136
253
117
May 2009–Mar 2026
$1,170/SF
Avg $/SF (last 12 mo)
136
Units
253
Sales
117
Resales
May 2009–Mar 2026
History
22 Liberty
Seaport
$2,357/SF
108
189
81
Nov 2015–May 2026
$2,357/SF
Avg $/SF (last 12 mo)
108
Units
189
Sales
81
Resales
Nov 2015–May 2026
History
Ritz-Carlton Avery St
Downtown
$973/SF
367
1,035
669
Aug 2001–Mar 2026
$973/SF
Avg $/SF (last 12 mo)
367
Units
1,035
Sales
669
Resales
Aug 2001–Mar 2026
History
Intercontinental
Waterfront
$1,216/SF
129
338
211
Oct 2006–May 2026
$1,216/SF
Avg $/SF (last 12 mo)
129
Units
338
Sales
211
Resales
Oct 2006–May 2026
History
One Charles
Back Bay
$1,180/SF
233
571
350
Nov 2004–Apr 2026
$1,180/SF
Avg $/SF (last 12 mo)
233
Units
571
Sales
350
Resales
Nov 2004–Apr 2026
History
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Every Deal Going Back Decades

A live preview of the same report data model: unit, date, price, financing, $/SF, square footage, beds, sale type, and gain/loss. Five rows show. The full ledger unlocks after signup.

Ritz-Carlton South StationDowntown
Winthrop Center
One Dalton
Raffles Boston
Millennium Tower
Mandarin Oriental
Echelon Seaport
Pier 4
50 Liberty
Millennium Place
45 Province
22 Liberty
Ritz-Carlton Avery St
Intercontinental
One Charles
Explore the sales data
Downtown
Ritz-Carlton South Station
166
Units
28
Total Sales
$2,101
Avg $/SF (last 12 mo)
Mar 2026
First Sale
5 most recent live sales
Live synced May 20, 9:35 AM EDT
Unit
Date
Price
Cash?
$/SF
Sq Ft
Beds
Sale Type
Gain/Loss
3610
5/18/26
$5.20m
Cash-like
2,946
1,766
3
Dev Sale
4111
5/6/26
$1.56m
Financed
1,853
842
1
Dev Sale
4905
5/6/26
$5.36m
Financed
2,968
1,805
3
Dev Sale
4110
5/6/26
$4.40m
Financed
2,671
1,647
2
Dev Sale
4109
5/6/26
$1.66m
Financed
1,988
837
1
Dev Sale
23 additional rows locked for Ritz-Carlton South Station
Full downloadable ledger, filters, unit pages, and every historical transaction.
Unlock full report