Data Sources
ValiFit aggregates data from 13 trusted sources including government agencies, real estate platforms, and geographic databases to provide comprehensive housing intelligence.
Redfin
Real-time property sales data, market trends, pricing analytics, and housing inventory.
Data Points
Zillow
Rental market data including the Zillow Observed Rent Index (ZORI) for accurate rent estimates.
Data Points
Google Places API
Points of interest, local businesses, restaurants, shopping, and lifestyle amenities.
Data Points
U.S. Census Bureau
Comprehensive demographic data including population, income, education, and housing characteristics.
Data Points
National Center for Education Statistics
Comprehensive school and district data including per-pupil spending, student-teacher ratios, and enrollment across all 50 states.
Data Points
U.S. Department of Housing and Urban Development
Fair Market Rent data, FHA loan limits, and affordable housing program information.
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Federal Emergency Management Agency
Flood zone maps, risk assessments, and National Flood Insurance Program data.
Data Points
U.S. Environmental Protection Agency
National environmental data including Superfund sites, brownfields, underground storage tanks, and contamination records.
Data Points
Federal Bureau of Investigation
Uniform Crime Reporting program data for crime statistics and public safety metrics.
Data Points
County Tax Records
Property tax data, assessment records, and municipal tax rates aggregated from county assessors nationwide.
Data Points
National Parcel Database
Comprehensive parcel and address database with geocoding and geographic information for 218M+ parcels across all 50 states.
Data Points
National Transit & Walkability Data
Transit stops, walkability scores, and transportation infrastructure data nationwide.
Data Points
TIGER/Line Shapefiles
Geographic boundary files for counties, municipalities, school districts, and ZIP codes.
Data Points
Fair Housing Act Compliant Algorithm
Designed to prevent steering and discriminatory outcomes
ValiFit's matching algorithm is architected from the ground up to comply with the Fair Housing Act and applicable state anti-discrimination laws. We deliberately separate scored metrics (used in rankings) from isolated metrics (shown only on individual town pages) to prevent algorithmic steering.
Scored & Compared
Objective, non-demographic metrics used in our ranking algorithm:
Isolated Display Only
Shown on town pages but never used for ranking or comparison:
Why this matters: By excluding school ratings, crime data, and demographics from our ranking algorithm, we prevent the system from inadvertently steering users toward or away from neighborhoods based on characteristics that correlate with protected classes. Users make their own informed decisions using isolated data displayed on individual town pages.
Data Accuracy & Updates
All data is sourced directly from official government agencies and is updated regularly to ensure accuracy. Data refresh frequency varies by source, typically ranging from monthly to annually depending on the agency's publication schedule.
Attribution & Legal
Market data provided by Redfin. Rental indices from Zillow ZORI. Local amenities powered by Google. Government data from U.S. Census Bureau, FEMA, FBI, HUD, EPA, NCES, and state/county agencies.