7 hidden traps in rental contracts
Termination clause, charges, repairs at your cost.
Signing a lease seems straightforward. You visit the apartment, the rent suits you, you sign.
These contractual traps are often avoidable: they usually stem from clauses poorly understood at the time of signing.
Uncapped charges, automatic termination clause, repairs at your expense… These traps are legal but rarely in your interest.
Here are the 7 clauses to check before signing your next lease.
Have a lease to review? Analyze it for free on subblink — results in 2 minutes.
Trap #1: The automatic termination clause
What the lease says
"In the event of non-payment of rent within 15 days of a formal notice, the lease shall be terminated by operation of law."
Why it's dangerous
A simple late payment can trigger the automatic termination of your lease. No second chance. No negotiation.
Your rights
The law of 6 July 1989 (art. 24) requires:
- A payment order by bailiff
- A 2-month period to regularize
- The possibility of applying to a judge for payment extensions
What subblink detects
High risk score if the mentioned deadline is below the legal minimum.
Trap #2: Vague recoverable charges
What the lease says
"The tenant shall bear all charges related to the property."
Why it's dangerous
"All charges" is too vague. Only charges listed in the decree of 26 August 1987 are recoverable.
Non-recoverable charges (landlord's responsibility):
- Exterior facade renovation
- Replacement of collective boiler
- Management fees (landlord's share)
- Property tax (except commercial clause)
What to demand
A lease with detailed charges and their calculation method (monthly provision with annual adjustment).
Trap #3: Joint liability in shared housing
What the lease says
"Co-tenants are jointly liable for the total rent and charges."
Why it's dangerous
If a co-tenant leaves without paying, you pay their share. This joint liability continues 6 months after the departure of the co-tenant (ALUR law).
Protection
- Check the duration of joint liability mentioned
- Demand a clause for end of joint liability upon departure
- Ensure a new co-tenant replaces the departing one
Trap #4: Repairs at the tenant's expense
What the lease says
"The tenant undertakes to carry out all work necessary to maintain the dwelling in good condition."
Why it's dangerous
"All work" potentially includes:
- Replacement of the water heater
- Complete repainting
- Repair of old plumbing
The legal rule
The tenant is responsible for minor repairs. The landlord is responsible for major repairs (art. 606 of the Civil Code):
- Roof, load-bearing walls
- Replacement of worn-out equipment
- Electrical compliance upgrades
Trap #5: Prohibition on subletting
What the lease says
"Any subletting is strictly prohibited, under penalty of immediate termination."
Why it's dangerous
If you use Airbnb, even for one night, you risk:
- Termination of the lease
- Repayment of subletting income received
- Damages
Nuance
Subletting is possible with written consent from the landlord. The subletting rent cannot exceed the principal rent.
Trap #6: Security deposit above legal limit
What the lease says
"A security deposit of 3 months' rent is required at signing."
The rule
- Unfurnished rental: 1 month maximum (ALUR law)
- Furnished rental: 2 months maximum
- Commercial lease: freely set (often 3 months)
A deposit above the legal cap is null. You can demand partial reimbursement.
Return deadline
- 1 month if the exit inventory matches
- 2 months if deductions are justified
Beyond that, the landlord owes a penalty of 10% of rent per month of delay.
Trap #7: Unlimited visit clause
What the lease says
"The tenant authorizes the landlord to visit the property at any time to check its condition."
Why it's dangerous
The landlord cannot enter your home without your consent, except:
- Urgent works (water damage)
- Visits for re-rental (with notice and agreed hours)
What to check
- Visits limited to working days
- Maximum duration of 2 hours per visit
- 24-48h notice minimum
Checklist before signing your lease
- Rent compliant with rent control (if applicable)
- Charges detailed and compliant with the decree
- Security deposit ≤ 1 month (unfurnished) or 2 months (furnished)
- Termination clause with legal deadline (2 months)
- Repairs: clear distinction tenant vs. landlord
- Subletting: conditions specified
- Joint liability (co-tenancy): limited duration
- Visits: with notice and defined hours
- Inventory annexed to the lease
Express check: Analyze your lease on subblink and identify problematic clauses in 2 minutes.
FAQ: Rental contracts
Can I refuse to sign an abusive clause in my lease?
Yes. Before signing, everything is negotiable. After signing, you can approach the departmental conciliation committee or the court.
Can my landlord modify the lease mid-term?
No. Any modification requires a signed amendment by both parties. Exception: annual rent revision if an indexation clause is provided.
What to do if my lease contains an illegal clause?
The clause is deemed unwritten (it has no legal effect). You don't need to formally contest it. But in case of a dispute, it's better to have identified it in advance.
Can subblink analyze a commercial lease?
Yes. subblink analyzes all types of leases. Commercial leases have different rules (3/6/9-year term, no rent control) that the AI takes into account.
Conclusion
A rental lease is a commitment of several years. A few minutes of verification can save you thousands of euros in disputes.
The 7 traps listed here are the most common. But every lease is unique.
Check yours for free on subblink →
📋 Go faster → Do you have a lease in front of you? Use our checklist of 12 points to check before signing as a tenant — interactive, free, FR and CH law, with red flags clause by clause.