Late Fees and Other Lease Penalties: Why Most Are Unenforceable

That 100-dollar late fee plus 10 dollars a day clause reads like law but usually is not. California treats penalty clauses skeptically — late fees must approximate real damages, and most do not.

What California Law Says

Liquidated damages in consumer leases are presumed void under Civil Code section 1671 unless fixing actual damages was impracticable and the amount represents a reasonable estimate of them. A landlord’s true cost of a late payment — brief administrative time and lost interest — rarely supports the fees leases claim.

How to Protect Yourself, Step by Step

1. Collect the lease clause and a history of fees charged across the tenancy.
2. Compare the fee to any realistic damage estimate — the gap is the argument.
3. Dispute stacked and daily-accruing fees in writing as void penalties.
4. Watch for fees inside 3-day notices — padding rent demands with fees is a notice defect.
5. Recover paid unlawful fees in small claims; the history multiplies across months.

Common Questions

I signed the lease with the fee in it. Am I stuck?

No — void penalty clauses are unenforceable regardless of signature; that is the entire point of section 1671.

What late fee would actually hold up?

One tied to demonstrable costs — modest, flat, and justified — which is why landlords asked to substantiate their number so often quietly drop it.