In November, ProPublica and WNYC launched an investigation into how some New York City landlords jack up rents higher than the law allows. Our reporting has shown that landlords have failed to register thousands of buildings for rent regulation, casting doubt on the legality of leases for about 50,000 apartments across the city. These building owners are getting $100 million in property tax breaks while violating the law requiring them to officially register.

In addition to this reporting, we asked NYC residents to fill out a survey that would help us determine if their building should be rent-stabilized or if their landlord was overcharging them in some way. Nearly 500 people filled it out, sharing stories and asking questions. We have included a few of them in this FAQ on what you need to know about rent limits.

And now we have another way for you to contribute — and all you need is a cell phone.

Through Groundsource — a text-messaging platform, you can take a very short survey that asks a few questions about your rent. Do you have rent issues? Are you worried about getting priced out of your neighborhood? Tell us about them. Or, maybe, everything is fine. It is still possible your landlord is charging you too much. A few questions and a follow up might help figure that out. All of this participation will help us continue reporting on this topic.

So, what to do? It's easy:

1. Text the word "Rent" to 347-695-2538

2. You'll get a few questions via text

3. Answer the questions

And that's it.

Following up: After receiving your survey, a reporter may follow up with you for more information. If you've asked a question and we can answer it, we will respond to you directly.

A note of privacy: Any information you share with ProPublica will not be published without your permission.