Company lists · Data refreshed September 2026

Top 25 Office building investment firms based in Philadelphia, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 125 companies tracked

RevenueBase identified 125 office building investment firms headquartered in Philadelphia, United States as of September 2026 and tracks 2,766 professional contacts across them, including 955 with verified work emails. Across the United States, New York is the largest hub for this category (982 companies); Philadelphia has 125.

This list covers office building investment firms headquartered in Philadelphia, 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 5, 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 5, 2026 86% judged on-target in blind review

125Companies

2,766Contacts tracked

955Verified emails

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The 25 largest office building investment firms based in Philadelphia, United States

Ranked by team size

Top 25 of 125 office building investment firms based in Philadelphia, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to office building investment firms: 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	Brandywine Realty Trust	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	201-500	418 contacts →
	Indirect evidence “Our purpose is to shape, connect and inspire the world around us through our expertise, the relationships we foster, the communities in which we live and work, and the history we…” Source: RevenueBase Database · checked Sep 5, 2026
2	Goldoller Real Estate Investments	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	501-1,000	325 contacts →
	Partial evidence “At GoldOller Real Estate Investments, we recognize that each interaction with our clients, employees, and residents is an investment in a valuable relationship.” Source: RevenueBase Database · checked Sep 5, 2026
3	PRG Real Estate	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	201-500	247 contacts →
	Indirect evidence “PRG Real Estate was founded by Jon Goodman and Steven Berger in 1985 to purchase and operate multifamily communities nationwide.” Source: RevenueBase Database · checked Sep 5, 2026
4	Parkway Corporation	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	201-500	209 contacts →
	Partial evidence “Parkway Corporation is a family-owned business with over 100 years of experience in parking and real estate development, investment, and management across North America.” Source: RevenueBase Database · checked Sep 5, 2026
5	Binswanger	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	51-200	171 contacts →
	Partial evidence “Binswanger is an international real estate organization providing a complete range of services to corporate and institutional clients through offices around the world.” Source: RevenueBase Database · checked Sep 5, 2026
6	Alterra Property Group	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	51-200	88 contacts →
	Partial evidence “Alterra Property Group, LLC (“Alterra”) is an established real estate investment, development, and management company based in Philadelphia, PA.” Source: RevenueBase Database · checked Sep 5, 2026
7	Rubenstein Partners	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	51-200	70 contacts →
	Strong evidence “Rubenstein Partners is the fund manager for a series of private equity funds focused on office investments throughout the United States.” Source: RevenueBase Database · checked Sep 5, 2026
8	GY Properties	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	51-200	66 contacts →
	Indirect evidence “GY Properties is a U.S.” Source: RevenueBase Database · checked Sep 5, 2026
9	SSH Real Estate	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	51-200	56 contacts →
	Indirect evidence “SSH Real Estate is a 100-person, full-service commercial real estate company serving the Greater Philadelphia Region.” Source: RevenueBase Database · checked Sep 5, 2026
10	Lubert Adler Partners	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	40 contacts →
	Strong evidence “Lubert-Adler, with offices in Philadelphia, New York, and Atlanta, is an institutional real estate investment manager focused on building a diversified portfolio of cash-flowing…” Source: RevenueBase Database · checked Sep 5, 2026
11	GNR Group	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	51-200	37 contacts →
	Partial evidence “GNR Group is a real estate investment firm comprised of specialized companies operating across the East Coast, with a core focus on the Single-Family Rental (SFR) sector and…” Source: RevenueBase Database · checked Sep 5, 2026
12	Arden Group	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	31 contacts →
	Indirect evidence “Arden Group is a privately held, vertically-integrated real estate fund manager, investor, and operator that owns and finances properties across the United States.” Source: RevenueBase Database · checked Sep 5, 2026
13	Pearl Properties Commercial Management LLC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	26 contacts →
	Partial evidence “Pearl Properties, Philadelphia’s premier full-service real estate investment and development firm, is engaged in the acquisition, development and management of core-plus mixed-use…” Source: RevenueBase Database · checked Sep 5, 2026
14	MPN Realty	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	25 contacts →
	Indirect evidence “MPN Realty's services are built on two simple, but essential pillars: We will always place our clients’ interests first and we will deliver superior results.” Source: RevenueBase Database · checked Sep 5, 2026
15	Alliance HP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	20 contacts →
	Partial evidence “Alliance Partners HP, LLC (“Alliance”) is a private real estate investment and operating company focused on opportunistic and core plus investments in commercial properties…” Source: RevenueBase Database · checked Sep 5, 2026
16	AMC Delancey Group, INC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	20 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
17	Amerimar Enterprises, INC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	51-200	17 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
18	Brandywine Construction & Management, INC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	16 contacts →
	Indirect evidence “Brandywine Construction and Management Inc.(“Brandywine”) is a full-service real estate services firm engaged in the property management and re-positioning of apartment and…” Source: RevenueBase Database · checked Sep 5, 2026
19	Stockton Real Estate Advisors	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	15 contacts →
	Indirect evidence “We are one of the Mid-Atlantic region’s leading commercial real estate firms providing strategic and innovative solutions to meet our clients’ business objectives.” Source: RevenueBase Database · checked Sep 5, 2026
20	Mccann Commercial Real Estate	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	12 contacts →
	Indirect evidence “McCann Commercial takes the experience of the Mike McCann Team, with over $2 Billion in closed transactions, and combines it with the in-house commercial real estate experts.” Source: RevenueBase Database · checked Sep 5, 2026
21	National Real Estate Development, LLC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	12 contacts →
	Indirect evidence “National Real Estate Development is a real estate development firm focused on developing innovative, high-quality projects throughout the country.” Source: RevenueBase Database · checked Sep 5, 2026
22	AR Spruce LLC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	1-10	11 contacts →
	Indirect evidence “Plan.” Source: RevenueBase Database · checked Sep 5, 2026
23	Design PRO Development	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	1-10	11 contacts →
	Indirect evidence “Design Pro Development has evolved into one of Philadelphia’s most innovative and trusted Real Estate companies by recognizing the hidden gems in any given neighborhood.” Source: RevenueBase Database · checked Sep 5, 2026
24	The Temple Group, INC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	11 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
25	Onefive Capital	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	11-50	11 contacts →
	Strong evidence “OneFive Capital (“OneFive”) is a real estate investment, management and advisory company with offices in New York and Philadelphia.” Source: RevenueBase Database · checked Sep 5, 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 firms. 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 firms.
Partial evidence: Its own public description names part of office building investment firms, 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 firms. 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 125 office building investment firms based in Philadelphia, United States

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Office building investment firms based in Philadelphia, United States at a glance

As of Sep 5, 2026

34.5%Verified-email coverage

22.1Average contacts per company

1-10Median size (employees)

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Philadelphia, so it is reported there. Company counts and contact totals on this page are exact for Philadelphia, over 125 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 firms, 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 Philadelphia, United States whose own description of what they do matches “office building investment firms”. 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 firms), 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 firms, and records with no verified work email. Companies headquartered outside Philadelphia 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, 955 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 5, 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 firms by metro in the United States

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 firms, 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 firms are there based in Philadelphia, United States?

RevenueBase identified 125 office building investment firms headquartered in Philadelphia, 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?

Brandywine Realty Trust, headquartered in Philadelphia, tops this list with the largest team on record.

Which city in the United States has the most office building investment firms?

New York leads the United States with 982 headquartered companies, followed by Los Angeles (478) and Houston (415). Philadelphia has 125.

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 955 verified decision-maker contacts tracked across these 125 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 5, 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.