Best 9 Mortgage APIs for Better Mortgage Servicing

CrawlBee Mortgage Data API delivers accurate, high-volume mortgage and homeownership data designed for businesses in real estate, finance, and investment. With over 150 million records updated daily and 98% accuracy (self-reported), this API empowers users to make smarter, data-driven decisions in a fast-moving property market.

Whether you’re assessing risk, building predictive financial models, or analyzing property market trends, CrawlBee provides the precision and flexibility you need to drive real results.

Key Features:

• 150M+ Mortgage Records
  Extensive dataset tailored for real estate professionals, lenders, investors, and financial analysts.

• Daily Updates
  Access property data refreshed every 24 hours to ensure relevance and accuracy.

• High Data Accuracy
  Self-reported 98% precision, ideal for mission-critical applications and financial forecasting.

• Customizable Delivery
  Adapt the dataset to your specific business needs—from investment strategy to market research.

• Flexible Integration
  Delivered via REST API, Streaming API, Feed API, SFTP, or S3 in multiple formats (.json, .csv, .txt).

BatchService Mortgage & Mortgage Loan Data offers comprehensive, high-quality property insights across 110M+ residential properties in the U.S. With detailed transaction records, mortgage history, and open lien data, this dataset supports a wide range of real estate, financial services, and proptech applications.

Covering 65+ datasets and offering 100% fill rate (self-reported), BatchService delivers the depth and accuracy needed to power due diligence, market analysis, investment strategies, and product innovation.

Key Features:

• 110M+ Residential Properties
  Nationwide coverage with granular data on ownership, financing, liens, and transaction history.

• Mortgage & Loan Details
  14+ fields including loan type, interest rate, borrower and lender info, origination and maturity dates, and more.

• Open Lien Data
  21+ attributes such as lien status, dates, LVT, financing type, and terms for real-time risk assessment.

• Sales History & Property Valuation
  52+ points including assessed land value, market value, and improvements with annual updates.

• 87M+ Profiled Homeowners
  Enriched with homeowner demographic and ownership details to enhance targeting and personalization.

• 3 Years of Historical Coverage
  Access historical insights to understand trends, behaviors, and property cycles.

McGRAW Mortgage, Property, Title & Ownership Data offers one of the most comprehensive property data solutions in the market, with over 150 million verified records and 200 unique attributes. Covering residential and commercial properties across the U.S., this dataset delivers unmatched depth for real estate professionals, mortgage lenders, title companies, and investors seeking reliable, up-to-date information.

With 100% self-reported data accuracy and flexible delivery options, McGRAW empowers organizations to make smarter decisions, reduce risk, and drive data-powered growth across real estate and finance.

Key Features:

• 150M+ Verified Records
  Extensive national dataset covering property, mortgage, title, and ownership information across all 50 U.S. states.

• 200+ Attributes Across Categories
  Including mortgage origination, borrower details, property characteristics, lien positions, transaction history, and ownership duration.

• Mortgage Data
  Full lifecycle visibility including loan types, interest rates, lenders, origination and maturity dates, and payment status.

• Property Data
  Detailed insights on residential and commercial real estate, including square footage, zoning, build year, and improvements.

• Title Data
  Ownership history, title chain, lien hierarchy, encumbrances, and recorded document history.

• Ownership Data
  Individual and corporate ownership profiles with purchase details, property tenure, and ownership patterns.

• 4 Years of Historical Coverage
  Access to multiple years of validated, regularly updated data for trend analysis and market forecasting.

Datahut Mortgage Advertisement Data provides daily insights into mortgage advertising strategies from over 350 lenders across the U.S. With 4 million records available and growing, this dataset empowers independent mortgage lenders to benchmark their offerings, analyze competitor pricing, and optimize marketing ROI with confidence.

Whether you’re looking to refine product pricing, enhance ad messaging, or track competitor campaigns, Datahut’s daily mortgage ad feed delivers the intelligence you need to stay competitive in today’s dynamic lending market.

Key Features:

• 4M+ Mortgage Advertisement Records
  High-volume data capturing ads and promotional content from 350+ lenders.

• Daily Data Feed
  Receive fresh updates every day to stay aligned with changing rates, promotions, and positioning strategies.

• Competitive Benchmarking
  Compare your mortgage product offerings against a wide range of competitors at local and national levels.

• Targeted for Independent Lenders
  Specifically designed to support small to mid-sized lenders seeking better visibility and strategy refinement.

TovoData Mortgage API provides real-time access to accurate, multi-sourced property and mortgage data. Designed for scalability and customization, this API delivers detailed insights into ownership, property characteristics, valuations, neighborhood trends, and more—making it one of the most comprehensive mortgage APIs on the market.

With modular endpoints and flexible pricing, TovoData is ideal for real estate platforms, financial services, home equity lenders, and data-driven businesses of all sizes.

Key Features:
Property Spring API
Access up to 300+ data points per property, including ownership, structure details, valuations, mortgage information, and more—TovoData’s most complete real estate dataset.

MLS API
Get real-time Multiple Listing Service (MLS) data contributed by realtors. Available as a standalone API or as an add-on to Property Spring.

Comparables (Comps) API
Instantly retrieve comparable properties and assess market activity near your target property. Available standalone or as a Property Spring extension.

Legal & Vesting API
Unlock typed legal descriptions and vesting info for accurate title and lending analysis—particularly valuable for home equity lenders.

Custom Data Solutions
Tailored API solutions based on your exact property data requirements—covering everything from liens to neighborhood analytics.

The Warren Group Mortgage Data API delivers real-time access to over 150 million property records sourced from local public records, offering one of the most robust mortgage and property data APIs in the market. Designed to seamlessly integrate into your database or application, this API enriches your system with current, accurate, and comprehensive property insights.

Ideal for real estate professionals, lenders, marketers, and developers, the API provides granular control through multiple endpoints, enabling custom analytics, data enhancement, and marketing personalization.

Key Features:

• Comprehensive Property Data
  Access detailed property records, tax assessments, AVMs, transaction history, and school data—all sourced from verified public records.

• Multiple API Calls
  Perform a range of queries including:
• Property snapshots by city, size, and range
• Listings by ZIP code
• Transaction history by address
• Sales snapshots within GeoID, filtered by date range and sale amount
• Data Enhancement & Augmentation

• Automatically enrich your existing databases with nationwide property and ownership information.

• Automated Forms & Reporting
  Populate digital property reports with real-time data to improve user experience and operational efficiency.

• Analytics & Modeling
  Use high-precision data to model real estate markets, forecast trends, and support investment decisions.

• Marketing Intelligence
  Leverage homeowner insights to personalize outreach and drive better engagement across campaigns.

• Combined Use Calls
  Merge property data with school data for a more contextual view of neighborhoods and locations.

RateSpot Mortgage Rates API delivers real-time access to front-line mortgage pricing data from leading PPE brokers like Bankrate.com, Icanbuy.com, and Zillow. With detailed rate quotes based on live market inputs, RateSpot offers one of the most transparent and dynamic mortgage pricing APIs available.

Whether you’re building a rate comparison tool, powering a lending platform, or simply looking to offer users reliable mortgage pricing insights, RateSpot ensures up-to-date and actionable data at scale.

Key Features:

• Live Front-Line Mortgage Pricing

• Access real-time rate feeds throughout the day from top mortgage exchange brokers.

• Rep-Line Level Pricing
  Rate data is based on ZIP code, purchase amount, downpayment, loan type, and credit score—ensuring high relevance for user-specific scenarios.

• Comprehensive Rate Details
  Each API response includes:
• Product type (30-year fixed, 20-year fixed, 5/6 ARM, 7/6 ARM, etc.)
• Interest rate
• Points
• APR
• Monthly payment
• Upfront costs
• Rate lock term
• Lender Transparency

Clearly see which lenders are advertising rates and how those rates vary by criteria throughout the day.

AGR Marketing Mortgage API is a reliable, scalable solution for accessing accurate mortgage and property data across the United States. Designed to support a wide range of business use cases—from lending platforms to real estate analytics—the API delivers up-to-date information on millions of properties, including residential, commercial, agricultural, and vacant land.

With strong documentation, customizable features, and flexible pricing plans, AGR Marketing’s API is a dependable choice for businesses of all sizes looking to integrate mortgage intelligence into their platforms.

Key Features:

• Comprehensive U.S. Property Coverage
  Access mortgage data for millions of properties nationwide, covering all property types—residential, commercial, agricultural, and land.

• Detailed Mortgage Insights
  Retrieve key mortgage data including:
• Loan amounts
• Interest rates
• Payment schedules
• Property type and classification
• Customizable API

• Tailor API calls to your specific needs—whether you’re pulling bulk property data or building loan models.

• Easy Integration
  Developer-friendly API with detailed documentation and dedicated support ensures fast onboarding.

• High Scalability
  Designed to handle large volumes of data without sacrificing performance—ideal for high-growth businesses and enterprise platforms.

Dexivo is a company that specializes in data acquisition and sales, with big data at the core of their operations. Their team of data scientists and experts excel at big data solutions, managing data from endless sources with various use cases. One of their product offerings is their Mortgage API, which is considered one of the best in the market.

General Features

Dexivo’s Mortgage API offers a comprehensive set of features that make it stand out from its competitors. These features include:

• API Service Architecture: Allows data to be imported on a programmatic basis into clients’ side applications.
• 245+ Million Unique Consumer Records: Provides a vast database of consumer information for mortgage-related purposes.
• 215+ Million Consumer Credit Ratings: Offers credit ratings for consumers, which is essential in mortgage lending.
• 410+ Taxonomies (Demographics): Includes age, race, gender, lifestyle, interests, and other demographic information that can help lenders make informed decisions.
• 35+ Financial Impact Taxonomies: Provides credit rating, home-mortgage, credit cards, net worth, investor, and other financial information that can help lenders assess a borrower’s financial standing.
• Political Data: Includes donor status to a particular party, which can be useful in assessing a borrower’s political affiliations and potential risks.
• High-Quality Verified Data: Boasts 244M+ emails with a 94% accuracy and 185M+ phone numbers with an 85%+ accuracy.
• Advanced Audience Identification: Helps marketers expand their potential audience on paid media networks.
• Data Appending via API: Restful API, JSON, and XML - HTTP GET or POST Supported.