The free checker
Tell it what the letter says. It climbs the same ladder a court would: coverage, amount, notice, timing.
The checker prints one of five answers. Appears to exceed the cap — with the lawful maximum and the monthly excess in dollars. Coverage fight — your landlord claims an exemption that fails on its own terms. Notice defective — the increase cannot take effect until full proper notice has run. Timing — a lock, a frequency rule, or the retaliation window stands in the way. Legal as served — the honest answer, with the negotiation path instead.
It never prints the word “illegal,” and it never tells anyone to stop paying rent. Every verdict’s first move is a letter or a complaint. Figures carry the stamp Rules checked October 2026 and the statute they came from, so you can check our work the way we checked theirs.
When the verdict is in your favor — or even when it isn't
The checker gives you the verdict. The kit gives you the paper: the cap-challenge letter with your numbers already in it, the exemption-rebuttal letter, the notice-defect letter, the rent ledger that turns an overcharge into a repayment figure, the complaint walkthroughs, and the negotiation pack for the days the answer is “legal.”
One-time payment. No subscription, ever. The checker stays free either way.