Company lists · Data refreshed September 2026

Top 25 Office building investment platforms based in the United States

Name: Office building investment platforms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 5,582 companies tracked

RevenueBase identified 5,582 office building investment platforms headquartered in the United States as of September 2026 and tracks 184,055 professional contacts across them, including 80,326 with verified work emails. New York is the largest hub.

This list covers office building investment platforms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

5,582Companies

184,055Contacts tracked

80,326Verified emails

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The 25 largest office building investment platforms based in the United States

Ranked by team size

Top 25 of 5,582 office building investment platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to office building investment platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	JLL	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	10001+	76,504 contacts →
	Partial evidence “JLL (Jones Lang LaSalle Incorporated) is a leading global commercial real estate services and investment management company.” Source: RevenueBase Database · checked Sep 29, 2026
2	Newmark	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	5,001-10,000	6,555 contacts →
	Indirect evidence “Newmark Group, Inc.(Nasdaq: NMRK), together with its subsidiaries (“Newmark”), is a world leading commercial real estate advisor and service provider to large institutional…” Source: RevenueBase Database · checked Sep 29, 2026
3	Brookfield Properties	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	5,001-10,000	4,785 contacts →
	Partial evidence “Brookfield Properties is now BGRE, reflecting the next chapter of our global real estate platform.” Source: RevenueBase Database · checked Sep 29, 2026
4	Marcus & Millichap	Indirect evidence	Calabasas, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,787 contacts →
	Indirect evidence “Marcus & Millichap was founded in 1971 with the goal of being a new kind of company – one driven by long-term relationships and built on a culture of collaboration.” Source: RevenueBase Database · checked Sep 29, 2026
5	Transwestern	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,718 contacts →
	Partial evidence “Transwestern is a vertically integrated commercial real estate firm dedicated to serving investors, partners and clients through expertise in investment, development, brokerage…” Source: RevenueBase Database · checked Sep 29, 2026
6	Lincoln Property Company	Partial evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,234 contacts →
	Partial evidence “Lincoln Property Company (“Lincoln”) is one of the largest diversified real estate services companies with 35 offices across the United States the United Kingdom and Europe.” Source: RevenueBase Database · checked Sep 29, 2026
7	Tishman Speyer	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,911 contacts →
	Partial evidence “As a diversified developer, operator, and investment manager of top-tier real estate across the US, Europe, Asia and South America, Tishman Speyer creates vibrant destinations and…” Source: RevenueBase Database · checked Sep 29, 2026
8	NEW Western	Partial evidence	Irving, TX, United StatesHQ checked Sep 29, 2026	201-500	1,320 contacts →
	Partial evidence “New Western is the nation’s largest private marketplace for investment real estate, built to make real estate investing more accessible while helping solve one of the biggest…” Source: RevenueBase Database · checked Sep 29, 2026
9	BGO	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,252 contacts →
	Partial evidence “BGO is a leading, global real estate investment management advisor, real estate lender, and a globally-recognized provider of real estate services.” Source: RevenueBase Database · checked Sep 29, 2026
10	HFF	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	904 contacts →
	Indirect evidence “HFF has been acquired by JLL.” Source: RevenueBase Database · checked Sep 29, 2026
11	Vornado Realty Trust	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	794 contacts →
	Partial evidence “Vornado Realty Trust is a preeminent owner, manager and developer of office and retail assets.” Source: RevenueBase Database · checked Sep 29, 2026
12	Amherst	Strong evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	756 contacts →
	Strong evidence “The Amherst Group ("Amherst") is a diversified data-driven investment management platform at the crossroads of global capital markets and U.S.” Source: RevenueBase Database · checked Sep 29, 2026
13	SL Green Realty Corp	Strong evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	752 contacts →
	Strong evidence “SL Green Realty Corp, Manhattan's largest office landlord, is a fully integrated real estate investment trust, or REIT, that is focused primarily on acquiring, managing and…” Source: RevenueBase Database · checked Sep 29, 2026
14	JBG Smith	Indirect evidence	Bethesda, MD, United StatesHQ checked Sep 29, 2026	501-1,000	659 contacts →
	Indirect evidence “JBG SMITH is the largest, publicly traded, pure-play real estate company focused on the Washington, DC market.” Source: RevenueBase Database · checked Sep 29, 2026
15	Revantage, A Blackstone Portfolio Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	501-1,000	621 contacts →
	Partial evidence “A global corporate services leader proudly serving Blackstone Real Estate portfolio companies and investments.” Source: RevenueBase Database · checked Sep 29, 2026
16	Thompson Thrift	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 29, 2026	501-1,000	598 contacts →
	Partial evidence “Thompson Thrift is an integrated full-service real estate company with offices in Indianapolis and Terre Haute, Indiana, Houston, Texas, Phoenix, Arizona and Denver, Colorado.” Source: RevenueBase Database · checked Sep 29, 2026
17	Jamestown	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	501-1,000	596 contacts →
	Partial evidence “Jamestown is a global real estate investment and management company with over 40 years of experience creating places that foster innovation and build community.” Source: RevenueBase Database · checked Sep 29, 2026
18	The Inland Real Estate Group Of Companies, INC	Partial evidence	Oak Brook, IL, United StatesHQ checked Sep 29, 2026	1,001-5,000	580 contacts →
	Partial evidence “The Inland Real Estate Group of Companies, Inc.(“Inland”) is one of the nation’s largest vertically integrated commercial real estate investment, finance, development, and…” Source: RevenueBase Database · checked Sep 29, 2026
19	Loopnet	Indirect evidence	Richmond, VA, United StatesHQ checked Sep 29, 2026	1,001-5,000	568 contacts →
	Indirect evidence “LoopNet is the most visited commercial real estate marketplace, covering For Sale and For Lease properties across all commercial property categories.” Source: RevenueBase Database · checked Sep 29, 2026
20	Realty Income Corporation	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 29, 2026	201-500	563 contacts →
	Indirect evidence “Realty Income, The Monthly Dividend Company®, is an S&P 500 company and member of the S&P 500 Dividend Aristocrats® index.” Source: RevenueBase Database · checked Sep 29, 2026
21	Highwoods Properties	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 29, 2026	201-500	529 contacts →
	Partial evidence “Highwoods Properties, headquartered in Raleigh, North Carolina, is a publicly traded (NYSE:HIW) real estate investment trust (“REIT”) and a member of the S&P MidCap 400 Index.” Source: RevenueBase Database · checked Sep 29, 2026
22	The Connor Group	Partial evidence	Miamisburg, OH, United StatesHQ checked Sep 29, 2026	201-500	517 contacts →
	Partial evidence “The Connor Group is a real estate investment firm with an award-winning culture and national recognition as a USA TODAY Top Workplace.” Source: RevenueBase Database · checked Sep 29, 2026
23	Foundry Commercial	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 29, 2026	201-500	509 contacts →
	Indirect evidence “Foundry Commercial is a partner-owned real estate firm focused on helping clients, investors, and communities make smarter real estate decisions.” Source: RevenueBase Database · checked Sep 29, 2026
24	Boxer Property	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	501-1,000	504 contacts →
	Indirect evidence “Boxer Property was founded in Dallas, Texas in 1992, to acquire, manage, lease, administer and sell closely held commercial properties.” Source: RevenueBase Database · checked Sep 29, 2026
25	RXR	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	488 contacts →
	Partial evidence “RXR an innovative investor, developer and place-maker committed to applying a customer and community-centered approach to building properties, services, and products that create…” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: office building investment platforms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names office building investment platforms.
Partial evidence: Its own public description names part of office building investment platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name office building investment platforms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 5,582 office building investment platforms based in the United States

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Office building investment platforms based in the United States at a glance

As of Sep 29, 2026

43.6%Verified-email coverage

33.0Average contacts per company

1-10Median size (employees)

9.8%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

3,305

11-50

1,623

51-200

482

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 5,582 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among office building investment platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “office building investment platforms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names office building investment platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among office building investment platforms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 80,326 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Office building investment platforms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names office building investment platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many office building investment platforms are there based in the United States?

RevenueBase identified 5,582 office building investment platforms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

JLL, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most office building investment platforms?

New York leads with 545 headquartered companies, followed by Los Angeles (195) and Miami (168).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 80,326 verified decision-maker contacts tracked across these 5,582 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.