Access comprehensive MLS data, property records, and location intelligence through a single, compliant platform while cutting data costs by up to 40%
The Data Partner Built for Your Success
Every Layer of Real Estate Data
Access 4M+ active listings from all prominent MLS sources, 160M+ property records, 278M+ verified addresses including 89M+ secondary addresses and Location Intelligence through a single, reliable data infrastructure.
Established MLS
Relationships
We maintain relationships with all prominent MLS organizations, allowing for faster onboarding compared to establishing new relationships from scratch.
Part of Constellation Software Inc.
Part of Constellation Software, a publicly-traded company with over $10B annual revenue, providing financial stability and long-term sustainability.
Compliance Management
We facilitate MLS licensing compliance, RESO standards adherence, and regulatory requirements including documentation and audit trails.
One Partner. Every Data Layer.
Work with a single team for MLS feeds, tax records, parcel data, addresses, geocoding, and ownership information instead of managing multiple vendors.
Transparent, Predictable Pricing
Requirement based flat pricing models aligned to your needs. No surprise escalations. Build accurate financial models with pricing that scales linearly.
Reduced Implementation Time
Most customers are production-ready within days rather than the typical 3-6 weeks timeline for traditional vendor integrations.
Dedicated
Support
Work directly with solutions architects and data specialists throughout onboarding and ongoing operations.
Built on Trust. Backed by Results
From national brokerages to innovative proptech platforms, our clients trust Constellation Data Labs to deliver the data infrastructure that powers their growth
"We've worked with multiple data vendors in the mortgage space. What makes Constellation Data Labs stand out is the collaboration—they're transparent about their data, flexible as our requirements have evolved, and available when something needs to get resolved.
Dale Larson
CEO at Modex
CEO at Modex
Over the past several months, Quantarium has made significant progress in expanding our MLS data coverage, bringing us closer to our goal of achieving parity with our previous providers. Our partnership with Constellation, particularly following the transition, has resulted in meaningful improvements in both the breadth of our data and the quality of our customer experience.
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Lia Adams
Director of Product and Customer Experience at Quantarium
Director of Product and Customer Experience at Quantarium
Over the past several months, Quantarium has made significant progress in expanding our MLS data coverage, bringing us closer to our goal of achieving parity with our previous providers. Our partnership with Constellation, particularly following the transition, has resulted in meaningful improvements in both the breadth of our data and the quality of our customer experience.
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Dakoda Collins
COO/Sales Manager at REAL Marketing Inc
COO/Sales Manager at REAL Marketing Inc
"Constellation Data Labs has drastically simplified our MLS integrations. We've had direct RETS feeds and partner integrations in the past that would take weeks and multiple engineers to build out to ensure normalized data and consistency.
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Jesse Zhang
Director of Engineering
Director of Engineering
"We've had a great experience working with the Constellation Data Labs team. One of our biggest challenges going into this was navigating complex data requirements and making sure everything was set up correctly across multiple states.
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Jennifer Hinds
Senior Brokerage Operations & Contract Specialist at Mainstay
Senior Brokerage Operations & Contract Specialist at Mainstay
“We were looking for a National Data provider for our investment services app. We came across Constellation after months of meeting with other companies. Their team are amazing and we would recommend them to anyone looking for high quality data in the Real Estate space.”
Lisa Anderson
Developer at Investor Green Sheet LLC
Developer at Investor Green Sheet LLC
The Complete Data Infrastructure for Brokerages Lenders Proptechs Marketplaces Homebuilders
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Comprehensive Data
- MLS listing Across North America
- Assessor and tax records
- Parcel data and boundaries
- Ownership information and history
- Property characteristics and comparable sales
- Address validation and standardization with rooftop geocoding
- All normalized into one consistent, clean data feed
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Flexible Integration Options
- GraphQL APIs for real-time application access
- Bulk delivery via SFTP/S3 for analytics workloads
- Webhooks for instant update notifications
- Database replication for data warehouse integration
- Custom ETL pipelines for specialized requirements
- Choose the delivery method that fits your architecture
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Fully Managed Data Operations
- Data ingestion and normalization handled end-to-end
- Continuous quality assurance and validation
- Schema mapping and transformation
- Near real-time update processing
- 24/7 monitoring and support
- Reduced engineering burden on your team
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Built-In Compliance Management
- RESO standards adherence across all integrations
- Usage compliance
- Automated policy monitoring and alerts
- Complete audit trail and data lineage
- Type II security controls
- Regulatory requirements managed by experts
Data Infrastructure Across the Real Estate Technology Ecosystem
Access Standardized Property Data at Scale
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