Company lists · Data refreshed September 2026

Top 25 Real estate transaction platforms based in the United States

Name: Real estate transaction 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 5, 2026 2,598 companies tracked

RevenueBase identified 2,598 real estate transaction platforms headquartered in the United States as of September 2026 and tracks 128,872 professional contacts across them, including 46,948 with verified work emails and 61,064 with mobile numbers. New York is the largest hub.

This list covers real estate transaction 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, 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

2,598Companies

128,872Contacts tracked

46,948Verified emails

61,064Mobile numbers

Explore all 2,598 companies → Free signup · no credit card · 500 free credits

The 25 largest real estate transaction platforms based in the United States

Ranked by team size

Top 25 of 2,598 real estate transaction platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names real estate transaction platforms: 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	CompassStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	n/a	28,842
	“Compass is a real estate technology company with a powerful end-to-end platform that supports the entire buying and selling workflow.” Source: company website · checked Sep 5, 2026
2	Douglas Elliman Real EstateIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	5,001-10,000	9,091
	“Douglas Elliman Inc.(NYSE: DOUG, “Douglas Elliman”) owns Douglas Elliman Realty, LLC, which is one of the largest residential brokerage companies in the United States with…” Source: company website · checked Sep 5, 2026
3	REALStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	n/a	7,390
	“Real is the fastest growing publicly-traded real estate tech brokerage.” Source: company website · checked Sep 5, 2026
4	ZillowIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	5,001-10,000	7,020
	“Having a place to call your own changes everything.” Source: company website · checked Sep 5, 2026
5	YARDIStrong evidence	Santa Barbara, CA, United StatesHQ checked Sep 5, 2026	10001+	6,294
	“Since 1984, Yardi has grown into the leading provider of high-performance software for the real estate industry.” Source: company website · checked Sep 5, 2026
6	RedfinIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1,001-5,000	5,304
	“Redfin is now powered by Rocket.” Source: company website · checked Sep 5, 2026
7	HomesmartStrong evidence	Phoenix, AZ, United StatesHQ checked Sep 5, 2026	10001+	5,070
	“HomeSmart is a revolutionary real estate enterprise powered by our proprietary end-to-end technology platform.” Source: company website · checked Sep 5, 2026
8	Fathom RealtyStrong evidence	Cary, NC, United StatesHQ checked Sep 5, 2026	10001+	4,277
	“Fathom Realty is a national, cloud-based, full-service real estate brokerage powered by its technology platform.” Source: company website · checked Sep 5, 2026
9	realtor.comIndirect evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,810
	“Realtor.com® is the trusted resource for home buyers, sellers and dreamers, offering the most comprehensive source of for-sale properties, among competing national sites, and the…” Source: company website · checked Sep 5, 2026
10	United Real EstateStrong evidence	Dallas, TX, United StatesHQ checked Sep 5, 2026	n/a	1,985
	“United Real Estate was created to solve the challenges faced by Agents and Brokers in maintaining profitability in an increasingly competitive marketplace.” Source: company website · checked Sep 5, 2026
11	ZiprealtyStrong evidence	Emeryville, CA, United StatesHQ checked Sep 5, 2026	n/a	1,825
	“ZipRealty is a leading national real estate brokerage and provider of proprietary technology and online marketing tools for the brokerage industry.” Source: company website · checked Sep 5, 2026
12	AppfolioStrong evidence	Santa Barbara, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,776
	“AppFolio (NASDAQ: APPF) AppFolio is the technology leader powering the future of the real estate industry.” Source: company website · checked Sep 5, 2026
13	OpendoorIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,399
	“Founded in 2014, Opendoor’s mission is to power life’s progress one move at a time.” Source: company website · checked Sep 5, 2026
14	NEW WesternStrong evidence	Irving, TX, United StatesHQ checked Sep 5, 2026	201-500	1,320
	“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: company website · checked Sep 5, 2026
15	homes.comIndirect evidence	Richmond, VA, United StatesHQ checked Sep 5, 2026	501-1,000	1,042
	“Homes.com is the only portal built on the principle of “Your Listing, Your Lead,” which means we always prominently display the listing agent’s name, photo, and brokerage on their…” Source: company website · checked Sep 5, 2026
16	Luxury PresenceStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	501-1,000	774
	“Luxury Presence is the growth platform for real estate's top performers.” Source: company website · checked Sep 5, 2026
17	Lone Wolf TechnologiesStrong evidence	Dallas, TX, United StatesHQ checked Sep 5, 2026	201-500	700
	“At Lone Wolf Technologies, we believe making tech for real estate is about much more than just making the best tools.” Source: company website · checked Sep 5, 2026
18	Robert Slack LLCStrong evidence	Orlando, FL, United StatesHQ checked Sep 5, 2026	501-1,000	697
	“Founded in 2014, Robert Slack Real Estate has developed into one of the most innovative and highly respected Brokerages in the US in a very short time.” Source: company website · checked Sep 5, 2026
19	Realty AustinStrong evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	201-500	639
	“At Realty Austin Compass, we believe real estate is more than just a transaction-it’s about your journey, your dreams, and finding your place in the world.” Source: company website · checked Sep 5, 2026
20	realestate.comIndirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1,001-5,000	601
	“We have combined RealEstate.com with Zillow.” Source: company website · checked Sep 5, 2026
21	OrchardIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	591
	“Orchard is radically simplifying the way people buy and sell their homes.” Source: company website · checked Sep 5, 2026
22	LoopnetStrong evidence	Richmond, VA, United StatesHQ checked Sep 5, 2026	1,001-5,000	568
	“LoopNet is the most visited commercial real estate marketplace, covering For Sale and For Lease properties across all commercial property categories.” Source: company website · checked Sep 5, 2026
23	QualiaStrong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	501-1,000	554
	“Qualia is the connected title, escrow, and closing technology infrastructure built for real estate and mortgage professionals.” Source: company website · checked Sep 5, 2026
24	Move, INCIndirect evidence	Santa Clara, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	523
	Source: company website · checked Sep 5, 2026
25	SoftproIndirect evidence	Raleigh, NC, United StatesHQ checked Sep 5, 2026	201-500	521
	“SoftPro is the nation’s leading provider of closing, title and escrow software, with more than customer sites and over users nationwide.” Source: company website · checked Sep 5, 2026

Showing 25 of 2,598 real estate transaction platforms based in the United States

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Real estate transaction platforms based in the United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

New YorkLargest hub · 129 HQs

61,064Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

1,527

11-50

721

51-200

213

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

42,150

31–60

2,602

61–90

90–180

180+

2,125

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 real estate transaction platforms, 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 the United States whose own description of what they do matches “real estate transaction platforms”. 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 real estate transaction 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 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, 46,948 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.

Real estate transaction platforms by metro

Frequently asked

How many real estate transaction platforms are there based in the United States?

RevenueBase identified 2,598 real estate transaction 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?

Compass, headquartered in New York, tops this list with the largest team on record.

Which city has the most real estate transaction platforms?

New York leads with 129 headquartered companies, followed by Austin (86) and Miami (86).

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 46,948 verified decision-maker contacts tracked across these 2,598 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.