Is it legal to raise rent without notice in the UK?

Plenty of tenants get a text on the 28th of the month saying “heads up, rent is going up on the 1st”. Most assume the landlord can do that because they own the place. They can't — at least, not in a way that legally binds you.

The short answer

No. In England a landlord can't legally raise your rent without proper notice. The statutory route — Section 13 of the Housing Act 1988, as amended by the Renters' Rights Act 2024 — requires:

• A completed Section 13 notice on the prescribed gov.uk form;
• At least two months' notice before the new rent starts;
• The new rent date aligning with the start of a rental period;
• No more than one Section 13 increase in any 12-month window.

Without all of those, the “notice” is defective and the new rent doesn't take effect. You can keep paying the existing rent. The landlord has to start over with a properly served notice.

What ‘notice’ legally means

“Notice” isn't just “telling you in advance”. In English landlord and tenant law it's a piece of paper (or permitted equivalent) with prescribed content, served in a prescribed way, after a prescribed period. For a rent increase via Section 13 that means:

• The Form 4 from gov.uk (titled “Landlord's notice proposing a new rent under an assured periodic tenancy”).
• The current rent, the proposed rent, and the date the new rent is to take effect all clearly stated.
• At least two calendar months between service and the new-rent date.
• Service by hand, by post to the property address, or by another means specified in your tenancy agreement.

Any of those missing, and the notice is “defective”. Defective notices don't put up the rent. Full stop.

What an informal email isn't

Landlords love informal channels — they're quick, friendly, and create no paperwork. An email saying “just letting you know rent is going to £X from next month” might feel like notice. It isn't. It's a proposal.

The distinction matters because of what each one does:

• A Section 13 notice imposes a new rent (subject to your right to challenge at tribunal). If you do nothing, you're on the new rent on the new-rent date.
• An informal proposal doesn't do anything by itself. You can accept, counter, or ignore. If you ignore it, the rent stays the same. (Until the landlord decides to use Section 13, which is its own clock.)

The one trap: don't act like you've agreed. If the landlord proposes a higher rent and you start paying it without comment, that can be argued as implied agreement. Either write back to decline, or keep paying the existing rent on the existing schedule.

Your three options if it happens

Your landlord just told you the rent is going up next month — by text, email, or a quick chat at the door. Here's the playbook:

1. Reply in writing to clarify the position. Something like: “Thanks — I've received your message about a proposed rent increase. As this isn't a Section 13 notice in the prescribed form, I'm treating it as a proposal rather than a formal notice. I'll continue paying the existing rent of £X per month. Please let me know if you intend to serve a formal Section 13 notice.” That's firm, polite, and legally accurate. See our full response template for variations.
2. Keep paying the existing rent. Don't start paying the new figure. Don't miss a payment in protest either — that just gives the landlord a Section 8 ground.
3. If a Section 13 notice eventually arrives, run it through our Section 13 checker to confirm it's valid, and check the proposed figure against local market at RentCharter. If it's above the local upper quartile, you have a real case at the First-tier Tribunal — and under the RRA 2024 the tribunal can only confirm or lower the rent, never raise it.

For the full notice period rules, read our piece on rent increase notice periods in the UK. For how much they could legally ask for in a properly served notice, see how much a landlord can increase rent in 2026. And for the broader framework, our rent increase rights in England guide is the place to start.

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