Want the full details?
Read exactly how Conny’s pricing works before you decide to continue.
See your number in 2 minutes — then decide if you want us to enforce it. Free check. No fee unless we win.
After your free rent estimate, we email you the result and explain your options. If your rent can be reduced, you can decide whether to mandate Conny. We only contact your landlord after your approval.
After your free rent estimate, we email you the result and explain your options. If your rent can be reduced, you can decide whether to mandate Conny. We only contact your landlord after your approval.
Thousands of tenants in Berlin have already used Conny to lower their rent and free up money for what’s important to them.
Landlords count on the fact that the rules are complex - and that most tenants will never check. That’s how overcharging stays the norm, quietly, month after month.
Answer a few questions about your apartment, get a free estimate in minutes, and see whether it may be worth taking the next step.
Tell us about your apartment, contract, and current rent.
We calculate whether your rent may be higher than the legal limit.
If there is a realistic chance of saving money, Conny guides you through the next steps.
Conny's legal team handles all communication. You don't have to talk to your landlord.
Duration of the process varies, some resolve within weeks, for others, we have to take the landlord to court.
No documents are needed for the first estimate.
Landlords don’t always give in quickly. Some delay, negotiate, or try to wait tenants out. That’s why it matters who stands behind your case.
Conny has been enforcing tenant rights for 10 years. We know the rules, the landlord tactics, and the legal pressure points - and we’ve built a process landlords take seriously. While some lawyers may specialize in rental law, we specialize in rent control law — a highly specific subdomain of rental law.
We have helped tenants challenge excessive rents for a decade.
Conny has fought rent-control cases all the way to Germany’s highest civil court.
Many landlords know we have the experience and staying power to see cases through. They know "we mean business".
Delays, excuses, document requests, settlement tactics, dodgy clauses in contracts - we’ve seen them before.
Digital first, no unnecessary office visits, and consultations that fit your schedule.
If stronger experience helps reduce your rent by even €60 more per month, that can add up to €7,200 over ten years.
The rent check is free. If we successfully reduce your rent, Conny is paid from the savings or repayments we achieve for you. If we do not succeed, you do not pay us.
Fighting high rent should not depend on whether you can afford a lawyer. Conny exists so everyone can challenge excessive rent - not only tenants with the money, time, or confidence to fight alone.
If Conny can help and your rent is successfully reduced, our fee comes from the savings we create - not from an upfront payment.
Until your landlord actually lowers your monthly rent, the reduction we achieve goes to Conny. Once the lower rent is in place, the ongoing savings are yours. That's it, no upfront cost and our service is entirely free, if we dont reduce your rent.
Everyone (!) should be able to fight high rents.
Get your first estimate online in around 2 minutes.
If there is a realistic chance of success, Conny takes over and handles everything.
While we fight your case, you keep paying your current (too-high) rent - money you’d lose anyway. Once the landlord agrees to lower it, the savings from that in-between period are what Conny earns. Nothing leaves your pocket on top.
Once your landlord lowers the rent, the monthly savings stay with you.
Read exactly how Conny’s pricing works before you decide to continue.
Start with a free estimate and see whether your rent may be too high.
A lower rent isn’t a one-time win. It’s every month, for as long as you stay. If Conny helps you save €300 a month, here’s what that means over the years you keep living there.
Every month your rent stays too high, that money is gone - you’ll never get it back. Our fee comes from anything that has been overpaid before the rent reduction and may (or may not) be recovered. Without Conny, that money disappears for good. With Conny, it pays for the years of lower rent that follow.
Thousands of tenants have already used Conny to lower their rent. Watch their stories and see what's possible.
English
1:52
"We filled in a form online and then started the process from there. It was pretty easy and pretty quick."
English
1:36
"Unfortunately, Mieterverein couldn't help. About 6–7 weeks later we got the news that we only pay half of what it was before."
English
1:28
"We were worried our landlord would retaliate, but Conny assured me there was nothing to fear. It took a year because the landlord dragged it out — but it worked."
You can check your rent without your landlord being contacted. If you later mandate Conny, we communicate professionally on your behalf. Your landlord cannot terminate your tenancy simply because you enforce your rights.
The Rent Control is a law to dampen the increase in rents on tight housing markets (§ 556d BGB). It was introduced nationwide in 2015 and is now effective in most federal states. The Rent Control applies in many large cities such as Berlin and allows tenants to reduce their rent if it is more than ten percent above the local comparable rent. This makes it currently the most powerful weapon against excessive rents, which is why every tenant should know about it and use it.
The Rent Control law generally applies throughout Germany. However, each federal state must define in which cities and communities it applies and implement the law independently.
The rent brake applies throughout Germany and determines the maximum amount of rent a tenant must pay. This maximum rent depends on the location and equipment of the apartment, as well as the age of the tenancy. You can determine your maximum rent without obligation and free of charge using our rent calculator.
In principle, it’s quite simple: When renting a new flat, the landlord may not charge an excessive rent. A maximum of 10% above the local comparable rent is allowed. If you have to pay more, you can also demand a reduction in rent during the current tenancy and reclaim the overpaid rent from that point on. But the devil is in the details: The tenant must activate the Rent Control by means of a so-called qualified letter of reprimand; otherwise the landlord can simply keep the excess rent received. The qualified letter of reprimand must meet a number of legal requirements and specifically derive from the local rent index why the rent is excessive. However, if you hire CONNY, you do not have to worry about this: We will take over the letter of reprimand for you.
Yes, if an out-of-court settlement cannot be reached and we consider judicial enforcement to be promising, our partner lawyers will also take legal action in court. The litigation costs are covered by CONNY. The commission for CONNY is only due in case of success. Should we not be successful, you will not have any costs; thus you have no cost risk*.
Landlords are also aware of the Rent Control and know that a higher rent is not legal. Accordingly, most of them remain calm and are willing to find an amicable solution for both sides. Many landlords already know CONNY and are aware that we communicate professionally and legally soundly as recognized rent law experts. A large proportion of landlords are housing companies that routinely process such cases. Termination of the rental agreement in the course of a rent reduction is excluded. Therefore, as a tenant you do not have to be afraid of the landlord.
Yes, entry and evaluation of the data by CONNY, including the calculation of the possible savings potential, is free of charge for you. You can then decide whether you wish to mandate CONNY to enforce your right to a lower rent.
The CONNY promise applies: Your landlord pays the bill. If we achieve a rent reduction for you, you benefit from an average of €400 more each month. Any claims from before the rent reduction are paid out by your landlord, including the excess security deposit you paid due to your previous high rent. We use these repayments to fund our team of legal experts. As a rule, we cover our entire commission from the repayment claims against your landlord and do not invoice you. In rare exceptional cases, and only if we achieve a result quickly and easily, we charge a minimum commission equal to the savings for the six months after we send the complaint. Under no circumstances will you pay more rent than you do today.
As a legal tech company, case processing at CONNY differs significantly from that of a traditional lawyer. You can find detailed insights into our approach and how you, as a customer, can stay informed on our “How CONNY Works” page.
We are experienced IT and legal experts who have successfully enforced the German Rent Control for thousands of tenants. The principle is: You have no cost risk, because you only pay if we have been successful for you.
Convenient: We take care of the entire process with your landlord; we make applications, set deadlines, send reminders, request and check evidence and finance contract lawyers if court hearings are necessary. All you have to do is instruct us and you will receive updates on your case.
No cost risk & active help: Unlike conventional lawyers, we only receive a commission if we are successful for you. If we are not successful, you have no costs. And unlike other consumer associations, we actively enforce your claims.
High success rate: Due to our processes, which have been successfully implemented thousands of times, and our automated processes, the experience of all cases flows into your case and we can proceed very efficiently.
In simple words - there is no difference. wenigermiete.de is a platform and a name known throughout Germany for the enforcement of tenant rights, operated by CONNY. On our way to providing consumers with a uniform platform for the enforcement of consumer rights, we have developed conny.legal, which takes over all services of wenigermiete.de and makes them accessible in a user-friendly design. We also continue to help tenants as a trustworthy partner in the enforcement of the Rent Control.
Free check. No upfront cost. No win, no fee. Your tenancy is fully protected.
See how much you can save