All Tenancy Law Tools

Check whether your rent exceeds the maximum permitted under the Mietpreisbremse (rent cap).

AI audit of your Nebenkosten (utility/operating costs) statement — uncover errors and non-allocable items.

Upload your lease and have problematic clauses analysed.

Comprehensive AI check of your lease for risks and invalid clauses.

Is your landlord wrongfully keeping your deposit? Check deductions and deadlines (§ 551 BGB).

Is the rent increase permitted? Check the capping limit, deadline and form.

Work out an appropriate rent reduction for defects in your home.

Work out your notice period as a tenant or landlord and the earliest permitted end date of the tenancy — free, no sign-up required.

Check which items on your Nebenkosten (utility/operating costs) statement can actually be passed on to you under § 2 BetrKV — free.

How much may the landlord add to the rent after a modernisation? Calculate the permitted increase, including the cap.

Is your flat smaller than stated in the contract? From a 10% discrepancy you can reduce the rent — calculate the possible refund.

Objection to a utility statement, consent to a rent increase, deposit refund: calculate the most important tenancy-law deadlines.

Compare your rent with the customary local reference rent (ortsübliche Vergleichsmiete) based on the local Mietspiegel (rent index) — free.

Is your redecoration clause valid? Check the clause wording for typical invalid patterns (rigid deadlines, pro-rata cost clauses).

Calculate how the rent develops under a stepped-rent contract (Staffelmiete) for each year — free, no sign-up required.

At what point of rent arrears does termination without notice threaten — and how can it be averted through a grace-period payment?

Was your heating-cost statement split correctly between consumption and floor area? Check your right to a 15% reduction.

How much of the CO₂ levy on your heating costs does the landlord bear? Calculate the split under the statutory tiered model — free.

How much may your index rent rise? Calculate the new rent based on the change in the consumer price index — free.

Is the rent increase covered by the cap? Check whether the rent rises by more than 15/20% over three years — free.

How much interest should your rental deposit (Kaution) have earned? Calculate the interest accrued over the tenancy — free.

How large is your share of the utility costs? Calculate your share by living area, number of occupants or consumption — free.

Is the owner-occupation termination (Eigenbedarf) valid? Check the eligible group of people, the reasons, the notice period and possible hardship cases — free.

May you sublet part of your flat? Check your right to permission and a possible subletting surcharge — free.

Create a correct termination letter with an automatically calculated end date — free and without sign-up.

Create a handover report with meter readings, keys and defects — as evidence at move-in or move-out, free.