Boston, Massachusetts

Boston publishes the owner of record and assessed value of every parcel as public-domain open data, but the Suffolk deed registry that holds prices is closed to automated reading, and its tallest towers sit in single-purpose LLCs.

7 buildings · 6 with an owner established · 22 sources · 6 tier B · 1 tier A · prepared 2026-10-13

Can you find out who owns it?

Massachusetts records title by deed at county registries of deeds; Boston's is the Suffolk County Registry, searched through the state's masslandrecords.com portal. The City's Assessing Department publishes the owner of record, care-of mailing address and assessed value of every parcel and condo unit each fiscal year, under a public-domain (PDDL) licence. Assessing also publishes yearly home-sales reports giving parcel, address, date and price, without names. Commercial prices appear only on recorded deeds, through the state deed excise, or in filings.

Is ownership public?An open dataset names the owner
Cost of one title searchOwner of record free (Analyze Boston, PDDL). Registry copies $1 per page; recording a deed $100 (MGL c.262 s.38). Whether a masslandrecords search is free could not be confirmed: its Suffolk page is bot-blocked
Bulk ownership dataCity of Boston Assessing 'Property Assessment' CSV on Analyze Boston, one file per fiscal year from FY2004 to FY2026 (owner, care-of addressee, values), updated annually, Open Data Commons PDDL
Sale pricesEvery sale, with its address
1

The marquee buildings

The towers that set the tone of the core, and who holds them. A price is the price a document states, on the date it states — not an estimate of what the building is worth now.

BuildingUseOwner Owner typeLast price paid
200 Clarendon (formerly John Hancock Tower)
200 Clarendon Street, Back Bay
1,700,914 sq ft net rentable, 99.9% occupied (BXP 10-K); 1,976,650 sq ft gross on the roll · 62 floors
Office BXP, Inc. (BP Hancock LLC)
100%
Owner of record on the FY2026 roll: BP HANCOCK LLC MASS LLC, care of BP Prucenter Acquisition LLC at 800 Boylston Street. BXP's Exhibit 21 lists BP Hancock LLC and BP Hancock Parking LLC. Its FY2025 10-K lists 200 Clarendon Street as 1,700,914 sq ft, 99.9% occupied, and Schedule III carries '200 Clarendon Street and Garage' at $1.20B gross, acquired 2010. It is the most valuable private office parcel in Boston: FY2026 total $848.3M, of which land is $174.6M on 73,143 sq ft. The FY2010 10-K calls it 'an iconic 62-story' tower.
REIT $930,000,000
2010-12-29
BXP FY2010 10-K: 'aggregate purchase price of approximately $930.0 million', being about $289.5M cash and $640.5M of assumed securitized mortgage debt.
B
Prudential Tower (800 Boylston Street)
800 Boylston Street, Back Bay
1,274,213 sq ft net rentable, 95.7% occupied (BXP 10-K)
Office BXP, Inc. (BP Prucenter Acquisition LLC)
100%
The roll names BP PRUCENTER ACQUISITION LLC as owner of four 800 Boylston units: the tower ($564.3M, land $478.4M on 774,718 sq ft), a second office unit ($172.2M), parking ($207.0M) and retail ($251.6M), $1.195B in all. BXP's Exhibit 21 lists BP Prucenter Acquisition LLC. Its FY2025 10-K lists '800 Boylston Street - The Prudential Center' and separately 111, 101 and 888 Huntington/Boylston and the retail shops. Schedule III carries 'Prudential Center' at $1.90B gross, acquired 1998/1999/2000. No filing opened states the purchase price.
REIT —B
100 Federal Street
100 Federal Street, Financial District
1,233,943 sq ft net rentable, 92.5% occupied (BXP 10-K) · 37 floors
Office BXP, Inc. (BP Federal Street LLC), in a joint venture
55%
Roll owner of record: BP FEDERAL STREET LLC, care of BP Prucenter Acquisition LLC. FY2026 total $545.4M, of which land is $176.2M on 82,545 sq ft. BXP's Exhibit 21 lists 'BP Federal Street LLLC'. Its FY2025 10-K shows '100 Federal Street (55% ownership)'. On 30 Oct 2014 BXP sold a 45% interest in 100 Federal Street, Atlantic Wharf and 601 Lexington Avenue for an aggregate $1.827B (FY2014 10-K). The filing opened does not name the buyer or give a price for 100 Federal alone.
REIT $615,000,000
2012-03-13
BXP FY2012 10-K: acquired 'for an aggregate investment of approximately $615.0 million in cash', with a long-term lease to a Bank of America affiliate for about 732,000 sq ft.
B
One Lincoln (formerly State Street Financial Center)
1 Lincoln Street, Financial District
1.1M sq ft (DivcoWest); 1,419,949 sq ft gross on the roll · 36 floors
Office DivcoWest-led partnership with BDT & MSD Partners and an unnamed global institutional investor
Distress sale. DivcoWest's release (30 Apr 2025) says it, BDT & MSD Partners and 'a global institutional investor' 'have acquired One Lincoln Street'. Fortis Property Group had completed a $1B refinancing in 2022 (Globe). The FY2026 roll still names LINCOLN STREET PROPERTY, care of 1 Lincoln Owner LLC: $498.7M, land $170.5M on 70,906 sq ft, built 2001. 'State Street Financial Center' is the same building. State Street moved to One Congress in 2023. No foreclosure deed was read, because the registry search is blocked.
Private company $400,000,000
2025-03-21
Foreclosure auction: 'an affiliate of the merchant bank BDT & MSD Partners made the only bid' of $400M (BBJ). The Globe puts the unpaid mortgage at $763M.
B
Winthrop Center (office)
115 Federal Street / 240 Devonshire Street, Financial District
824K sq ft office plus 317 condominiums (Bisnow); office unit 1,455,542 sq ft gross on the roll
Mixed use Millennium Partners
Bisnow (26 Aug 2026): 'Millennium Partners locked down a $575M securitized loan for the office portion of its Winthrop Center', from Morgan Stanley and Barclays, part of an $856M package that includes a $281M C-PACE loan on the residential portion. It describes a $1.4B, 691-ft tower completed in 2023. On the roll the commercial unit ($284.5M, built 2019) stands in WINTHROP CENTER PRIMARY CONDOMINIUM TRUST, the condominium's own trust. No filing names the Millennium entity that holds the office unit, and the loan is not on EDGAR. The 317 homes belong to private buyers who are not named.
Developer —B
One Financial Center
655 Atlantic Avenue (1 Financial Center), Dewey Square
1,403,650 sq ft gross on the roll
Office Dewey Square Tower Associates
The FY2026 roll names DEWEY SQUARE TOWER ASSOC as owner of 655 Atlantic Ave, with mail to 1 Financial Center: $600.2M, land $126.5M on 47,981 sq ft, built 1984. The building name is taken from that mailing address. MetLife's Exhibit 21 at 31 Dec 2014 lists 'DEWEY SQUARE TOWER ASSOCIATES, LLC (MA) 52.5%'. The entity is absent from MetLife filings found after 2016, so MetLife's current stake, and who holds the rest, were not established. No price was found.
Private company —B
Millennium Tower Boston
1 Franklin Street, Downtown Crossing
Residential Not established
the jurisdiction does not disclose owners
A condominium. The roll carries 442 residential condo units under condo main 0304590010 (MILLENNIUM TOWER TRUST, the owners' trust), at $1.062B FY2026 in total, built 2013. Unit owners are private households and are not named here. A separate retail condominium unit ($34.8M) stands in MP FRANKLIN TOWER LLC as lessee. Bisnow (2026) says Millennium Partners 'also owns the 442-unit Millennium Tower', but the roll shows the homes in individual hands. No sourced sale price for the tower as a whole exists, because its units were sold one by one.
Not established —A
2

The core land

The most valuable ground in the city, and what the public record says about it.

Boston's most valuable ground is in the Back Bay and the Financial District, but its single most valuable parcels are hospitals and universities, all tax-exempt. Office land under the towers is assessed at about $2,100 to $2,400 per sq ft. Figures are FY2026 assessed values from the City's open-data roll, read 13 Oct 2026 and summed by this research. Prices come from SEC filings, and home prices from the Assessing Department's sales reports.

All property in Boston$285.19 billion
FY2026 total assessed value across 184,552 roll records (parcels and condo units), summed from the Analyze Boston CSV.
Highest-valued parcel$2,448,200,000
255 Charles St, General Hospital Corp (Massachusetts General Hospital), 3.06M sq ft gross, exempt. Second is Harvard's 689 Huntington Ave (Medical School), $1.50B. FY2026 roll.
Highest-valued private office parcel$848,300,000
200 Clarendon St (BP Hancock LLC / BXP). Next are 125 High St ($678.2M) and One Financial Center ($600.2M). FY2026 roll.
Office land benchmarkabout $2,100 to $2,400 per sq ft
Assessed land: 200 Clarendon $174.6M on 73,143 sq ft (about $2,390); One Lincoln $170.5M on 70,906 sq ft (about $2,400); 100 Federal $176.2M on 82,545 sq ft (about $2,130). FY2026 roll.
Single-family homes sold, calendar 2024776 sales, median about $835,000
Counted from the Assessing Department's FY2026 single-family sales report, which lists parcel, address, date and price but no names. The condo report lists 3,666 sales (median about $750,000).
Deed excise$2 per $500 of consideration (state statute)
MGL c.64D s.1, on consideration 'exclusive of the value of any lien or encumbrance remaining'. The $4.56 per $1,000 rate commonly quoted for Suffolk was not confirmed on an official page (mass.gov refuses automated reads).
3

Who owns the town

At this scale the significant owner is rarely a trust or a fund: it is one or two local holding companies, a family in its second or third generation, and often the land around the town rather than the buildings in it.

Boston's largest holders are public bodies and the hospitals and universities of the Longwood Medical Area, Fenway and Allston. The City alone holds 2,328 parcels worth $8.97B, 327 of them recorded as taken by tax foreclosure ('City of Boston by FCL'). Massport's acreage is mostly Logan Airport, a single 2,330-acre parcel. Counts group every spelling of each owner name in the roll's OWNER field. Values are FY2026 assessments, nearly all of them tax-exempt. Acreage sums the roll's LAND_SF field.

NameTypeFY2026 roll
City of Boston
31 spellings, including 'CITY OF BOSTON BY FCL' (tax-foreclosure takings, 299 parcels) and departmental names (School Dept, Police, Public Health). Largest: land on Morton St ($425.1M) and the Central Library at 230 Dartmouth St ($307.3M). City of Boston Credit Union is excluded.
Government 2,328 parcels, $8.97B, about 3,445 acresA
Mass General Brigham hospitals
General Hospital Corp (MGH, 255 Charles St, $2.448B), Brigham and Women's Hospital (5 Francis St, $1.07B), Faulkner, Spaulding Rehabilitation and Partners HealthCare System, across 30 spellings. The roll gives each hospital corporation's own name, not the system's.
Institution 125 parcels, $6.60BA
Commonwealth of Massachusetts (incl. former MDC/DCR land)
50 spellings. Largest: 200 William T Morrissey Blvd ($843.4M, 7.4M sq ft of land), 115 Cambridge St ($324.6M) and 375 South St ($318.5M). Roughly 50 parcels carry MDC or Metropolitan District Commission names, the agency since merged into DCR. The roll does not use 'DCR'.
Government 532 parcels, $6.24B, about 3,312 acresA
President and Fellows of Harvard College (incl. Harvard Real Estate)
The Medical School at 689 Huntington Ave ($1.50B) and 77 Ave Louis Pasteur ($624.4M), plus Allston holdings in the College's name and in Harvard Real Estate / Harvard RE-Allston Inc. MIT is in Cambridge and not on Boston's roll.
Institution 108 parcels, $4.23B, about 322 acresA
Trustees of Boston University
Commonwealth Avenue campus, e.g. 685 Commonwealth Ave ($336.5M) and 899 Commonwealth Ave ($275.0M).
Institution 343 parcels, $3.96BA
Northeastern University
360 Huntington Ave ($1.093B), 775 Columbus Ave ($527.0M), 450 Parker St ($458.7M).
Institution 89 parcels, $3.25BA
Federal government (United States of America, US Postal Service)
Includes 255 Spring St ($263.4M), the USPS facility at 25 Dorchester Ave ($260.0M) and 15 New Sudbury St ($237.5M). Only exact federal spellings are counted.
Government 61 parcels, $2.41BA
Boston Planning Department (Boston Redevelopment Authority / BPDA) and EDIC
21 spellings of the Boston Redevelopment Authority, the BPDA and the Economic Development and Industrial Corporation. Largest: 43 Pier 4 Blvd ($281.0M). The roll still uses the BRA name, and one record reads 'Boston Redevelopment Authority d/b/s Boston Planning & Development Agency'.
Government 239 parcels, $1.44BA
Boston Housing Authority
Public-housing developments, e.g. 11 B St ($195.6M) and 46 Logan Way ($154.5M).
Government 210 parcels, $1.32B, about 180 acresA
Massachusetts Port Authority (Massport)
The Maverick St airport parcel ($585.0M on 101.5M sq ft of land) and Seaport and South Boston waterfront parcels on Marginal St and Fid Kennedy Dr.
Government 120 parcels, $1.15B, about 2,600 acresA
Massachusetts Bay Transportation Authority
19 spellings. Rail and station land.
Government 393 parcels, $0.79B, about 663 acresA
Trustees of Boston College
The Brighton side of its campus and its Brighton holdings. The roll records 2601 Beacon St ($594.8M) with a Brookline mailing address.
Institution 218 parcels, $0.88BA
5

Who builds the houses

New-home building in this market: the volume, and the firms behind it. Ownership of a builder matters as much as its volume — a private-equity platform and a family firm behave differently.

Boston builds about 2,000 homes a year, almost all of them in apartment buildings. Census permit files for the City of Boston show 3,512 units permitted in 2021, then 3,935 (2022), 2,051 (2023), 1,789 (2024) and 2,107 in 2025. Of the 2025 units, 1,867 were in 71 buildings of five or more units and 228 were single-family. The national home builders are almost absent. New towers are built by developers and institutional landlords, each through a single-purpose LLC, and condominium buildings pass to their buyers unit by unit. No Boston builder league table exists. The figures below are new buildings on the FY2026 roll held in, or mailed care of, each firm, and the roll gives no unit counts for rental buildings.

NameTypeNew buildings on the FY2026 roll
AvalonBay Communities
Roll: BRIGHTON AVALON LLC at 139 Washington St, a luxury apartment building from 2021 ($80.2M, 250,929 sq ft gross), with AVALON NASHUA LLC (120 Nashua St, 2014, $264.6M) and three AVALON BAY BFG LP parcels on Boylston St ($453.9M). All are mailed care of AvalonBay. AvalonBay's FY2025 Exhibit 21 lists Brighton Avalon, LLC, Avalon Nashua, LLC and AvalonBay BFG Limited Partnership.
REIT Avalon Brighton (2021, $80.2M); 5 parcels, $798.7M in allA
Greystar
Roll: GUGV II 212 STUART PROPERTY OWNING LLC, mailed care of Greystar Real Estate Partners, Boston. 146,000 sq ft gross, residential/commercial, built 2020. 'Care of' is a mailing instruction, and no filing opened ties the LLC to Greystar.
Private company 212 Stuart St (2020, $116M)A
The Davis Companies
Roll: DIV 1515 COMMONWEALTH LLC (luxury apartments, 2022, 156,379 sq ft gross), mailed care of The Davis Companies. Two condominium buildings are also mailed care of Davis: 100 Shawmut Ave (138 units, 2020) and the Mark at DeNormandie Wharf (107 units, 2019). Their units belong to their buyers.
Private company 1515 Commonwealth Ave (2022, $85M) plus two condo buildings (245 units)A
Tishman Speyer
Roll: ALLSTON PHASE A RESIDENTIAL OWNER LLC, mailed care of Tishman Speyer, New York. Luxury apartments, 280,722 sq ft gross, built 2023, on Harvard's Allston land. The ground relationship with Harvard is not stated on the roll.
Private company 50 Western Ave, Allston (2023, $56M)A
Toll Brothers (mailing only)
Roll: QMG HUNTINGTON LP, a Chapter 121A property built 2022 with 405,500 sq ft gross, mailed care of Toll Bros Inc. EDGAR full-text search finds no 'QMG Huntington' in any Toll Brothers filing, so the roll ties the LP to Toll only by its mailing address.
Public company 258 Huntington Ave (2022, $112M)A
President and Fellows of Harvard College
An apartment building of 517,839 sq ft gross, built 2024, held in Harvard's own name on the roll.
Institution 175 N Harvard St (2024, $63M)A
6

Commercial landlords

The commercial side, counted separately from housing: who holds the office, retail and industrial floor area.

Boston's office and lab stock is led by one Boston-headquartered REIT, BXP, which owns the Hancock and Prudential towers outright and 100 Federal Street in a joint venture. Life-science landlords (Alexandria, and the Diversified Healthcare Trust joint venture that owns Vertex's Seaport buildings) hold the next tier. Most other towers sit in single-purpose LLCs whose tax bills go care of an owner, a manager or a tax agent, and the roll alone cannot tell which. Synergy, Ryan LLC and Cushman & Wakefield appear often in the care-of field as managers or agents, not owners. Floor areas below are the REITs' own figures.

NameTypeBoston holding
BXP, Inc.
FY2025 10-K property table, City of Boston entries: 200 Clarendon, 800/111/101 Huntington and 888 Boylston (Prudential Center), the Prudential retail shops and Star Market, 100 Federal (55%), Atlantic Wharf Office (55%), 100 Causeway and the Hub on Causeway podium (50% each), Hub50House (440 units, 50%) and the Lofts at Atlantic Wharf (86 units). On the roll, BP-named owners hold 27 parcels at $3.94B (FY2026).
REIT 8.82M sq ft in 13 Boston propertiesA
Alexandria Real Estate Equities
FY2025 10-K: the Alexandria Center for Life Science – Fenway (401 and 421 Park Dr, 201 Brookline Ave) plus 392,011 RSF under construction at 421 Park Dr, and 5 and 15 Necco St in the Seaport. In Dec 2025 it sold its 60% stake in the 285–345 Dorchester Ave land joint venture to its partner for $33.5M. Roll: 14 'ARE-MA Region' parcels, $1.39B.
REIT 1.91M RSF operating (Fenway 1,452,183; Seaport 459,395)A
Seaport JV (Diversified Healthcare Trust 10%, a third-party institutional investor 90%)
Roll: SNH SEAPORT LLC at 50 Northern Ave ($455.1M) and 11 Fan Pier Blvd ($444.8M), labs mailed care of the RMR address in Newton. DHC's FY2025 10-K: 'a 10% equity interest in an unconsolidated joint venture that owns a life science property located in Boston', encumbered with $1.0B of mortgage debt. The 90% partner is not named.
REIT 2 parcels, $899.9MA
Oxford Properties Group entities
Roll parcels mailed care of Oxford Prop Group: Two25 Franklin Owner LLC (225 Franklin St, $415.0M), OPG 125 Summer Owner (DE) LLC ($191.8M) and OPG MP Parcel Owner (DE) LLC (643 Summer St, $111.1M), among others. No filing was opened to confirm Oxford's own parent.
Private company 9 parcels, $810MA
Beacon Capital Partners (53 State Property LP)
Roll: 53 STATE PROPERTY LP, owner of record of 43 State St (Exchange Place, 1,502,842 sq ft gross), mailed care of Beacon Capital Partners. A mailing address only. No filing was opened.
Private company 1 parcel, $538.1MA
?

Looked for and not found

Claims this page would have made if a source could be opened. They are left out rather than guessed.

  • Deed prices for every marquee tower. Massachusetts prints the deed excise on recorded deeds, but the Suffolk registry search (masslandrecords.com) is behind an Incapsula block. No deed, consideration figure or foreclosure deed was read, and every price here comes from SEC filings or named reporting.
  • The $4.56 per $1,000 Suffolk deed-excise rate. The statute opened (c.64D s.1) states $2 per $500. The surcharge that lifts it to $4.56 was not confirmed on an official page, because mass.gov refuses automated reads.
  • Who holds the 45% of 100 Federal Street that BXP sold in Oct 2014. The 10-K does not name the buyer.
  • One Financial Center's current sponsors. MetLife held 52.5% of Dewey Square Tower Associates, LLC at 31 Dec 2014, and no later filing found lists it.
  • The Millennium Partners entity that holds Winthrop Center's office unit. The roll names the condominium trust, and the $575M office CMBS loan (2026) was a private placement not found on EDGAR.
  • One Lincoln's foreclosure deed and the exact closing entity. BBJ names an affiliate of BDT & MSD Partners as the winning bidder, and DivcoWest's release names a three-firm ownership group. The roll (FY2026) still shows the pre-foreclosure owner.
  • Prudential Center purchase prices (BXP, 1998–2000). Schedule III gives only years acquired.
  • 125 High Street ($678.2M, TST 125 High Street LLC) and One Congress ($487.5M, BC One Congress Tower Owner LLC). Their sponsors were not established from filings, so they were left out of the marquee.
  • Mailing ('care of') fields tie Greystar, Davis, Tishman Speyer, Toll Brothers, Oxford and Beacon Capital to roll entities. A mailing address is not proof of ownership, and only AvalonBay and BXP were matched in an Exhibit 21.
  • The roll's care-of field names private individuals (trustees, tax-department staff). None is reproduced. Residential condo owners in Millennium Tower and Winthrop Center are private households and are not named.
  • Listing-portal terms (Zillow, Redfin, MLS PIN) were not opened for this city, so scrapingProhibited is empty, not cleared. No portal was scraped.
  • Pro Builder's Top 200 ranks by national revenue and gives no Boston figure. Nareit and CoStar landlord rankings remain blocked or paywalled (pack gaps).
§

Sources

  1. Property Assessment FY2026 (CSV, 184,552 records: owner, care-of addressee, land, building and total value, gross area, year built), read 13 Oct 2026 — City of Boston Assessing Department / Analyze Boston · openA
  2. Property Assessment FY2026 data key (PDF) — City of Boston Assessing Department · openA
  3. Property data and information: FY26 sales information and calendar-2024 sales reports (single-family, condo, two- and three-family) — City of Boston Assessing Department · openA
  4. Single-Family Sales in Boston, Calendar Year 2024 (FY2026 R1 Sales Report) — City of Boston Assessing Department · openA
  5. Massachusetts General Laws c.64D s.1: excise on deeds — The General Court of the Commonwealth of Massachusetts · openA
  6. Massachusetts General Laws c.262 s.38: fees of registers of deeds — The General Court of the Commonwealth of Massachusetts · openA
  7. BXP, Inc. Form 10-K for 2025 (Item 2 property table; Schedule III) — U.S. Securities and Exchange Commission · openA
  8. BXP, Inc. Form 10-K for 2025, Exhibit 21.1 (subsidiaries) — U.S. Securities and Exchange Commission · openA
  9. Boston Properties Form 10-K for 2010 (acquisition of the John Hancock Tower and Garage) — U.S. Securities and Exchange Commission · openA
  10. Boston Properties Form 10-K for 2012 (acquisition of 100 Federal Street) — U.S. Securities and Exchange Commission · openA
  11. Boston Properties Form 10-K for 2014 (sale of a 45% interest in 100 Federal Street, Atlantic Wharf and 601 Lexington) — U.S. Securities and Exchange Commission · openA
  12. DivcoWest-led Partnership Acquires One Lincoln Street (press release, 30 Apr 2025) — DivcoWest · openA
  13. $400M bid wins foreclosure auction for Boston office tower (Boston Business Journal, via NBC Boston, 21 Mar 2025) — NBC Boston / Boston Business Journal · openA
  14. Newly upgraded One Lincoln tower lands its first biotech tenant — The Boston Globe · openA
  15. Downtown Office Tower Secures $575M Refinancing (Winthrop Center) — Bisnow · openA
  16. MetLife, Inc. Form 10-K for 2014, Exhibit 21 (subsidiaries) — U.S. Securities and Exchange Commission · openA
  17. Alexandria Real Estate Equities Form 10-K for 2025 (Greater Boston property tables) — U.S. Securities and Exchange Commission · openA
  18. Diversified Healthcare Trust Form 10-K for 2025 (Seaport JV) — U.S. Securities and Exchange Commission · openA
  19. AvalonBay Communities Form 10-K for 2025, Exhibit 21.1 (subsidiaries) — U.S. Securities and Exchange Commission · openA
  20. Building Permits Survey, place-level annual files ne2021a.txt to ne2025a.txt (Boston, MA) — U.S. Census Bureau · openA
  21. Massachusetts Land Records, Suffolk County Registry of Deeds search — Secretary of the Commonwealth / Suffolk Registry of Deeds · blockedC
  22. Terms of use and privacy policy for City of Boston digital services — City of Boston, Department of Innovation and Technology · openA