OneKey MLS

What OneKey MLS does

OneKey MLS is the largest REALTOR-run Multiple Listing Service in New York state, founded in 2014 and headquartered in West Babylon, New York. The organization provides verified MLS data, listing management tools, and marketing automation to over 43,000 REALTORS across the New York metropolitan area, including Long Island, Manhattan, and the Hudson Valley. Its core platform comprises the OneKeyMLS.com consumer-facing home search portal (delivering direct, verified MLS data to homebuyers and renters), the AdBuilder™ automated digital advertising module (integrated with the MLS-Touch® mobile app for on-the-go campaign creation), and integrations with third-party tools such as Roomvo for interactive listing engagement.

The business operates on a subscription-based revenue model, generating recurring revenue through MLS membership fees paid by real estate professionals. Go-to-market is hybrid: subscription-based direct membership to REALTORS and brokerages serves as the primary channel, supplemented by consumer-facing web distribution through OneKeyMLS.com and the national Cribio platform (operated by Broker Public Portal, of which OneKey is a founding owner). The organization has 51-100 employees and is governed as a private, REALTOR-owned entity with no public ticker.

Strategically, OneKey is executing a multi-pronged expansion: a data-sharing partnership with UNYREIS extends coverage to 19 New York State counties and nearly 50,000 agents; partnerships with Rayse and Broker Public Portal (Cribio) broaden the member-benefit and distribution ecosystem; and product launches (AdBuilder™, updated consumer platform) diversify monetization beyond core subscription fees. The leadership team comprises CEO Richard Haggerty and COO Melissa King.

Name

OneKey MLS

Legal name

OneKey MLS

Website

https://onekeymls.com

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

51–100 employees

Short description

OneKey MLS is the largest REALTOR-run Multiple Listing Service in New York state, providing verified MLS data, listing tools, and marketing automation to over 43,000 REALTORS and consumers across the New York metropolitan area on a subscription basis.

Ownership category

akta.pro rank

Product category

Multiple Listing Service (MLS) Platform

NAICS

Offices of Real Estate Agents and Brokers (5312), Web Search Portals and All Other Information Services (51929)

SIC

Real Estate Agents & Managers (For Others) (6531), Real Estate (6500)

akta.pro primary industry

Buyer Representation Services (BPAJAAAJ)

Keywords

• Multiple listing service
• Real estate MLS
• Property listing platform
• Real estate data services
• Listing marketing software

Headquarters

HQ city

West Babylon

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Operations, Infrastructure, Personnel, Marketing or Sales

Revenue model

1. MLS Subscription Services: OneKey MLS provides Multiple Listing Service data and tools to real estate professionals (agents, brokers, REALTORS) on a subscription basis. Revenue is generated through membership fees for access to MLS data, listing services, and platform tools like AdBuilder and MLS-Touch app.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels2 records

Core offering

OneKey MLS operates a Multiple Listing Service data platform that aggregates, verifies, and distributes real estate listing information to over 43,000 REALTOR members across the New York metropolitan area (Long Island, Manhattan, Hudson Valley). It also provides a consumer-facing home search platform (OneKeyMLS.com) and member tools such as AdBuilder™ for automated listing advertising, with expanded reach via partnerships with Cribio and UNYREIS.

Product overview

OneKey® MLS operates as the largest Realtor-run Multiple Listing Service in New York state, providing a comprehensive real estate data and platform ecosystem serving over 43,000 REALTORS across the New York metropolitan area (Long Island, Manhattan, and Hudson Valley). The core offering is the consumer-facing OneKeyMLS.com home search platform, which delivers direct and verified MLS data to homebuyers and renters. This platform integrates interactive tools (Roomvo) and national listing portals (Cribio) to maximize listing visibility. The add-on AdBuilder™ module enables agents to automate digital advertising campaigns for listings directly from the MLS environment. Partnerships with Rayse provide agent value and transparency tools with co-branded educational programming, while a data-sharing agreement with UNYREIS® extends cross-regional search across 19 New York State counties.

Differentiator

Problem solved

Functional benefit

Products and services

• OneKeyMLS.com Consumer Search Platform Consumer-facing home search platform providing direct and verified MLS listing data to homebuyers, renters, and sellers in the New York Metro Area, with interactive listing engagement tools and national exposure via the Cribio portal.
• AdBuilder™ Automated digital advertising platform for OneKey MLS members that generates, targets, and reports on advertising campaigns for real estate listings, integrated with the MLS-Touch® mobile app and aimed at over 42,000 real estate professionals.
• MLS-Touch® Mobile App Mobile application for OneKey MLS members integrated with AdBuilder™ that enables streamlined real estate marketing and listing management on the go for real estate professionals in the New York Metropolitan area.

Quantifiable outcome

• 2.3% year-over-year increase in median sales price to $665,000
• +2 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature3 records

Partnerships

Four partnerships are on record, tiered core and flagship.

• Cribio.comcoreChannel Partner/ Reseller/ Distributor · 8 April 2026OneKey MLS partnered with Cribio.com to expand listing exposure for homebuyers in the New York Metro Area. Cribio is the national consumer-facing platform of the Broker Public Portal.
• RayseflagshipGTM or Marketing Partner · 17 February 2026Rayse partnered with OneKey MLS to offer its agent value and transparency platform as an enhanced member benefit for over 43,000 REALTORS in the New York metropolitan area. The collaboration provides access to Rayse's platform and co-branded Masterclass educational programming designed to help agents communicate their value to clients. The partnership reflects a shared commitment to education-led engagement and transparency in real estate transactions.
• Upstate New York Real Estate Information Services LLC (UNYREIS®)coreStrategic or Co-development Partner · 9 February 2026OneKey MLS and UNYREIS formed a data-sharing partnership allowing real estate professionals to search listings across a wider New York State region through a single login. The integration combines listings from 19 counties across the Greater NY Metropolitan and upstate regions, benefiting nearly 50,000 agents and brokers with increased listing exposure, referral opportunities, and improved client service. Tentative launch planned for Q2 2026.
• Broker Public Portal (Cribio)coreStrategic or Co-development Partner · 1 February 2026OneKey MLS partnered with Broker Public Portal to power its consumer-facing home search experience, integrating listings into Cribio, the national consumer-facing website. The partnership reinforces MLS data integrity, supports broker and seller choice through an opt-out option for listing agents and their clients. OneKey MLS is a founding owner of the Broker Public Portal, which was founded in 2014 and rebranded to Cribio in September 2025.

Scale indicators10 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Bright MLS: Bright MLS is the largest MLS in the United States by subscriber count, covering the Mid-Atlantic region with millions of listings. It is a directly comparable regional MLS operator serving REALTOR subscribers with listing data, technology tools, and consumer-facing search.
• California Regional MLS (CRMLS): CRMLS is the largest MLS in California and one of the largest in the US, serving tens of thousands of REALTORS across a major state. It is directly comparable as a large regional MLS providing data services, member tools, and consumer-facing listing access.
• Stellar MLS: Stellar MLS is a large regional MLS serving REALTORS across Florida with listing data, member tools, and consumer search. Comparable to OneKey MLS as a state-scale MLS providing subscription-based services to a large REALTOR subscriber base.
• Heartland MLS: Heartland MLS serves the Kansas City region and surrounding area with MLS data services for REALTORS. Directly comparable as a regional MLS organization providing verified listing data and member technology tools to real estate professionals.
• REcolorado: REcolorado is the largest MLS in Colorado, serving REALTORS across the Denver metro and broader Colorado market with listing data and member services. Directly comparable as a regional MLS offering subscription-based data access and consumer-facing property search.
• Midwest Real Estate Data (MRED): MRED is a major regional MLS serving the greater Chicago area and parts of the Midwest, providing listing data and REALTOR tools. Comparable to OneKey as a large metropolitan-area MLS organization with a significant subscriber base.
• Triangle MLS: Triangle MLS serves REALTORS in the Raleigh-Durham-Chapel Hill region of North Carolina with MLS data and member services. Comparable to OneKey MLS as a regional MLS organization supporting real estate professionals with verified listing data.
• Northwest MLS (NWMLS): NWMLS is a major regional MLS serving Washington state, providing listing data to REALTOR members and operating a consumer-facing property search. Directly comparable as a large regional MLS with similar subscription-based member services.

Broad incumbents

• Zillow Group: Zillow Group operates the largest US consumer real estate portal alongside Zillow, Trulia, and HotPads. It is a broad incumbent that competes with OneKey's consumer-facing search platform and has historically shaped MLS data syndication economics, making it a strategically relevant comparable.
• CoStar Group (Homes.com): CoStar Group owns Homes.com and Apartments.com and has invested aggressively in consumer real estate search. As a broad incumbent with overlapping consumer real estate portal ambitions, it is comparable to OneKey's consumer-facing platform expansion strategy and broader real estate data play.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/onekeymls
• Facebookfacebook.com/onekeymls

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OneKey MLS