Real Estate Data Infrastructure for Property Marketplaces
Comprehensive MLS coverage and property data to power search, discovery, and user engagement at scale. Built for marketplaces that need reliable data without operational complexity.
Data Infrastructure for Modern Marketplaces
Comprehensive Listing Data Access
Access 4M+ RESO-standardized MLS listings across North America through a single integration. Expand into new markets without negotiating individual MLS relationships or building custom integrations. Get complete listing fields including property details, pricing, status, agent information, and media.
Near Real-Time Data Updates
Listings refresh every minute, ensuring your platform displays current availability, pricing, and status information. Historical listing records included for trend analysis and reporting.
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.
Compliance Management
We facilitate MLS licensing compliance, RESO standards adherence, and regulatory requirements including documentation and audit trails.
Single Integration, Multiple Delivery Methods
Choose how you receive data: GraphQL APIs for real-time access, bulk files via S3/SFTP, streaming updates, or direct cloud share via Snowflake. All RESO-standardized for consistent development across sources.
How Marketplaces Use Data Labs
1/5
Property Search & Discovery
- Access RESO-standardized listing data to power search interfaces
across all markets - Leverage normalized property attributes for consistent filtering and sorting
- Retrieve complete property details, photos, and media from all sources
- Get near real-time status updates (1-minute refresh) for accurate availability
- Use geocoded data and boundaries to enable map-based search features
2/5
User Alerts & Notifications
- Access near real-time listing updates to power saved search alerts
- Retrieve price change data to notify users of listing updates
- Get status change information for property tracking features
- Historical data supports trend notifications and market updates
3/5
Market Analytics & Data Display
- Access sales & transfer history for market trend displays
- Retrieve property tax and assessed value data for market insights
- Get AVM estimates and market values for pricing guidance
- Use historical listing data for market velocity calculations
- School data and boundaries for neighborhood intelligence
4/5
Lead Generation Support
- Provide accurate, current listing data to reduce user friction
- Complete agent and office information for lead routing
- Status updates ensure leads aren’t wasted on unavailable properties
- Property details support personalized recommendations
5/5
Agent & Broker Data
- Access agent contact information and production statistics
- Office and brokerage details for directory features
- Licensing data and team information
- Historical performance data
Complete Property Data for Marketplaces
MLS Listing Data
- 4M+ active, pending, and sold listings
- 99.9% North American Coverage
- RESO-standardized fields across MLSs sources
- Property descriptions and features
- Photos and media assets
- Pricing and listing history
- Agent and office information
- Days on market and status changes
- 5-minute refresh rate
- Historical listing records
Property Data
- 160M properties (99.9% U.S. coverage)
- Constellation ID (CID) for matching
- Property addresses and geocodes
- Property characteristics and structure details
- Assessor and tax data
- Assessed and market values
- Sales & transfer history
- Ownership and occupancy information
- Mortgage and estimated equity
- Foreclosure data
- AVM/estimated values
Location intelligence
- 278M+ verified addresses (188M+ primary, 89M+ secondary)
- Rooftop-level geocoding with structure-point precision
- Address validation and standardization API
- 164M parcel polygons with property linkage
- Multi-source verification with confidence scoring
- Census block and neighborhood linkage
Why Real Estate Portals and Marketplaces Choose Data Labs
Faster Market Expansion
Marketplaces typically add new geographic markets in days rather than months, enabling rapid growth without extended integration timelines.
Improved Data Quality
Normalized data across all sources reduces development complexity and improves user experience consistency.
Reduced Operating Costs
Consolidating multiple data vendors into a single solution typically reduces data costs by 30 – 40% based on customer feedback.
Better User Engagement
Regular data updates improve user trust and increase engagement with property search and alert features.
Getting Started with Constellation Data Labs
Requirements Review
Discuss your market coverage needs and technical requirements
Data Access Setup
Configure API credentials and data delivery methods
Integration Development
Build using our APIs with sandbox environment access
Testing & Validation
Verify data quality and compliance in test environment
