Screenshots
Complete US Property History Reports
PropertyFax solves a critical problem in the US real estate market: fragmented property information.
Buyers, sellers, and investors need to consult dozens of different sources to get a complete
picture of a property.
The platform integrates data from ATTOM Data Solutions, the largest real estate data aggregator
in the US, to provide comprehensive reports including automated market valuations (AVM) with
confidence scores, complete sales and transaction history, detailed tax records with assessment
values and taxes, and periodic snapshots that allow tracking property value evolution.
For homeowners, the system offers a complete hub to manage documents (deeds, inspections),
log maintenance and improvements, organize photos, and share reports with potential buyers
through secure token-based links.
Market value estimates using advanced ATTOM Data API algorithms, with confidence scores and comparison to asking price.
All previous property transactions with dates, values, and appreciation calculations over time.
Tax assessment values, land vs. improvement breakdown, and historical tax payment records.
Periodic captures of property value and characteristics that allow tracking wealth evolution.
ATTOM's API has dozens of different endpoints with complex and nested data structures.
Created a services layer with complete TypeScript typing, automatic retry with exponential backoff, and utility functions to normalize data into a standardized internal format.
Ensuring type consistency between frontend and backend in an application with many entities and relationships.
Implemented tRPC with Zod for validation, enabling automatic type inference from backend to frontend. Combined with Prisma, I have type-safety from the database to React components.
Get in touch to discuss how I can help with your next project.