About RentCapper
Empowering tenants to fight illegal rent increases
Our Mission
RentCapper was created to help tenants understand their rights and fight back against illegal rent increases. We believe that everyone deserves access to clear, accurate information about rent control laws and the tools to protect their housing rights.
Our platform combines real-time rent control law data with an easy-to-use calculator and professional legal letter generation, making it simple for tenants to verify if a proposed rent increase is legal and take action if it's not.
What We Do
Rent Increase Calculator
Our free calculator checks if your landlord's proposed rent increase violates local rent control laws. Simply enter your address and rent amounts to get an instant analysis based on 2026 rent control regulations.
Legal Letter Generation
Generate a professional legal letter citing specific rent control laws and legal codes. Our AI-powered system creates a formal letter ready to send to your landlord, saving you time and ensuring accuracy.
Comprehensive Law Database
We maintain an up-to-date database of rent control laws across major US cities and states, including AB 1482, RSO, and local ordinances. Our data is regularly updated to reflect 2026 regulations.
How It Works
- 1
Enter Your Information
Provide your city, state, current rent, and proposed rent amount.
- 2
Get Instant Analysis
Our system calculates the legal maximum rent based on applicable rent control laws.
- 3
Generate Legal Letter
If the increase is illegal, generate a professional letter to send to your landlord.
Ready to Check Your Rent Increase?
Use our free calculator to verify if your landlord's proposed increase is legal
Get Started →