Rent increases under the new rules, and the end of rent bidding

Rent can now rise once a year, using the prescribed Form 4A, with at least 2 months' notice. Tenants can challenge an increase they believe is above market rate at a tribunal. Informal uplift letters and clauses that escalate rent automatically are no longer how this works.

The mechanism

• Once per year, no more.
• Form 4A, served properly. Keep proof of service.
• At least 2 months' notice before the new rent takes effect.
• The tenant can refer an above-market increase to the tribunal.

Bidding wars are over, by law

Any written advert must state an asking rent, and it is now illegal to ask for, encourage or accept offers above it. The advertised figure is the ceiling. Alongside that, rent in advance is capped at one month, and it can only be taken after the tenancy agreement is signed.

The practical consequence

Pricing accurately at the start matters more than it ever has. Under-price and you cannot quietly correct it through bidding; over-price and a tribunal can pull an increase back to market. The honest, evidence-based figure was always our preference. Now it is also the legally sensible one.

As ever: this is general guidance, not legal advice, and the current position lives on GOV.UK. If you want a straight view of what your property should achieve under the new rules, book a rental valuation and we will show you the evidence behind the number.

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