Company lists · Data refreshed September 2026

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

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 114 companies tracked

RevenueBase identified 114 office building investment firms headquartered in Irvine, United States as of September 2026 and tracks 2,786 professional contacts across them, including 1,115 with verified work emails. New York is the largest hub.

This list covers office building investment firms headquartered in Irvine, 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, how directly it supports the match, 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 SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

114Companies

2,786Contacts tracked

1,115Verified emails

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

Ranked by team size

Top 25 of 114 office building investment firms based in Irvine, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names office building investment firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	LBAStrong evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	201-500	310
	“LBA, founded in 1991, is a full service real estate investment and management company with a diverse portfolio of industrial and office properties in major markets throughout the…” Source: company website · checked Sep 5, 2026
2	Steadfast CompaniesPartial evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	298
	“Since our formation in 1994, Steadfast Companies and its affiliates have developed into an integrated, multifaceted real estate investment management company that today owns…” Source: company website · checked Sep 5, 2026
3	Voit Real Estate ServicesIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	257
	“Voit Real Estate Services is a Southern California commercial real estate firm that provides strategic real estate solutions tailored to clients’ needs.” Source: company website · checked Sep 5, 2026
4	Panattoni Development CompanyIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	240
	“With an expansive international platform, Panattoni Development Company, Inc.” Source: company website · checked Sep 5, 2026
5	The Muller CompanyPartial evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	85
	“The Muller Company is an opportunistic real-estate investment, development, and management firm with a proven track record in acquiring and re positioning commercial properties.” Source: company website · checked Sep 5, 2026
6	Greenlaw PartnersPartial evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	81
	“Greenlaw is an Orange County based real estate development and investment management company.” Source: company website · checked Sep 5, 2026
7	Kairos Investment Management CompanyPartial evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	72
	“Kairos Investment Management Company is a privately owned entrepreneurial real estate investment and asset management company headquartered in Irvine, California.” Source: company website · checked Sep 5, 2026
8	Passco Companies, LLCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	70
	“Passco Companies, LLC is a nationally recognized market leader in the acquisition, development, and management of multifamily and commercial properties throughout the U.S.” Source: company website · checked Sep 5, 2026
9	CIP Real EstatePartial evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	11-50	68
	“CIP Real Estate (“CIP”) is a full service real estate investment and management company based in Irvine, California, focused on the acquisition, development, repositioning and…” Source: company website · checked Sep 5, 2026
10	Reza Investment Group INCPartial evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	11-50	64
	“With a multibillion dollar transaction track record, REZA Investment Group is the premier retail investment advisory firm.” Source: company website · checked Sep 5, 2026
11	Marwest CommercialIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	11-50	63
	“MarWest Commercial is the leading full-service real estate management company specializing in the formation, management and repair of Commercial Property Owners’ Associations…” Source: company website · checked Sep 5, 2026
12	Essex Realty Management, INCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	62
	“Established in 1987, ESSEX REALTY MANAGEMENT, INC.” Source: company website · checked Sep 5, 2026
13	CREDEPartial evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	56
	“CREDE is a full-service Commercial Real Estate Development firm that provides Project Management services to its clients using the same approach we take on our direct investments.” Source: company website · checked Sep 5, 2026
14	Sperry CommercialPartial evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	56
	“Sperry Commercial is a full-service commercial real estate firm specializing in investment sales, leasing, property and asset management, as well as 1031 exchange services.” Source: company website · checked Sep 5, 2026
15	The Koll CompanyIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	11-50	53
	“The Koll Company is a well-capitalized full-service real estate operating company headquartered in Irvine, California.” Source: company website · checked Sep 5, 2026
16	Riverrock Real Estate GroupIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	52
	“RiverRock Real Estate Group understands how to deliver superior institutional level service at a regional level for a competitive value.” Source: company website · checked Sep 5, 2026
17	Tiarna Real Estate Services, INCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	51
	“Real Estate Management & Brokerage” Source: company website · checked Sep 5, 2026
18	RED Tail AcquisitionsPartial evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	11-50	39
	“Founded in 1985, Red Tail Acquisitions, LLC (“RTA”) is a private real estate investment firm focused in acquiring industrial and retail properties throughout the United States.” Source: company website · checked Sep 5, 2026
19	Pres CompaniesIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	11-50	28
	“Professional Real Estate Services, Inc.” Source: company website · checked Sep 5, 2026
20	Argent Management LLCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	25
	“Argent Management LLC is a provider of real estate services to institutional investors, private owners, developers and financial institutions; and is affiliated with principals of…” Source: company website · checked Sep 5, 2026
21	Pendulum Property PartnersIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	11-50	24
	“Pendulum Property Partners is a privately held real estate firm that owns, operates, develops and manages commercial real estate.” Source: company website · checked Sep 5, 2026
22	Faris LEE InvestmentsPartial evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	22
	“Faris Lee Investments is a nationally recognized investment advisory firm specialized in retail commercial real estate.” Source: company website · checked Sep 5, 2026
23	TMC GroupIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	11-50	20
	“Founded in 1985, TMC Group is a private holding company that owns organizations which invest in, develop, and operate innovative real estate projects and related companies around…” Source: company website · checked Sep 5, 2026
24	Advanced Real EstateIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	201-500	19
	“Advanced Real Estate, Inc.'s partnerships own and manage over multi-family units in Southern California.” Source: company website · checked Sep 5, 2026
25	Starboard Realty AdvisorsIndirect evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	11-50	18
	“Starboard Realty Advisors LLC, headquartered in Irvine, California, is a privately held, fully integrated real estate firm that has more than 35 years of hands-on, cycle-tested…” Source: company website · checked Sep 5, 2026

Showing 25 of 114 office building investment firms based in Irvine, United States

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

As of Sep 5, 2026

11-50Median size (employees)

New YorkLargest hub · 982 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 114 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 evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Irvine, 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.
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 Irvine 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 an evidence 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, 1,115 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

How many office building investment firms are there based in Irvine, United States?

RevenueBase identified 114 office building investment firms headquartered in Irvine, 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?

LBA, headquartered in Irvine, tops this list with the largest team on record.

Which city has the most office building investment firms?

New York leads with 982 headquartered companies, followed by Los Angeles (478) and Houston (415).

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 1,115 verified decision-maker contacts tracked across these 114 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 SmartSearch, 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.