My AST is ending soon, and my tenants want to renew. How much can I legally increase the rent without them challenging it, and what's the best way to serve Section 13 notice in the current UK market?
Quick Answer
Landlords can legally increase rent to market rate. Section 13 notice on Form 4 presents the increase, but tenants can challenge it at a First-tier Tribunal if deemed above market value.
## Fair Rent Increases and the Legal Framework for Landlords
When an Assured Shorthold Tenancy (AST) is approaching its end, and tenants express a desire to renew, the question of a rent increase often arises. Landlords can propose a rent increase once a year, and it must be fair and realistic, reflecting local market rates. Legally, the increase cannot be challenged if it aligns with comparable rents for similar properties in the area. Landlords should compare their proposed rent with at least three other similar properties on the market, noting features like size, condition, and location. This evidence is crucial if the tenant refers the increase to the First-tier Tribunal, which determines market rent.
### How is a fair rent increase determined in practice?
A fair rent increase is one that reflects the current open market value for a similar property in the same area. For example, if a two-bedroom flat was let for £900 per month two years ago, and comparable two-bedroom flats in the immediate vicinity are now achieving £1,050 per month, a proposed increase to £1,025 would likely be deemed fair. Conversely, attempting to raise the rent to £1,300 for the same property, when market rates are £1,050, would be considered unreasonable and highly likely to be overturned by a tribunal. The key is demonstrable market evidence. Always document your research, including links to property listings or printouts, to support your proposed new rent.
## Navigating Section 13 Notices Post-Section 21 Abolition
From May 1, 2026, Section 21 no-fault evictions are abolished in England. This makes the Section 13 procedure for formally increasing rent even more significant, as landlords must rely on proper legal processes for tenancy management. A Section 13 notice can be used to increase rent on a periodic tenancy or at the end of a fixed-term tenancy. The notice period for a rent increase must be at least one month for a weekly or monthly tenancy, and six months for an annual tenancy. The new rent cannot take effect sooner than one year after the last rent increase or the start of the tenancy.
### Best practice for serving a Section 13 notice
The best way to serve a Section 13 notice is to use the official form (Form 4), available from gov.uk. It must be completed accurately, specifying the current rent, the proposed new rent, and the date from which the new rent will apply. It should be served to all tenants named on the tenancy agreement. Serving it via recorded delivery post or by hand, with a signed acknowledgment of receipt, provides clear evidence that the notice was received. If tenants dispute the increase, they have the right to refer it to the First-tier Tribunal (Property Chamber), which will decide the market rent based on evidence provided by both parties. It's crucial that landlords have solid evidence of comparable local rents to avoid having their proposed increase rejected or reduced.
### Can the tenant challenge the increase?
Yes, a tenant can challenge a rent increase proposed via a Section 13 notice by applying to the First-tier Tribunal (Property Chamber). This application must be made before the date the new rent is due to start. The Tribunal will then assess whether the proposed rent is a market rent. If the landlord's proposed increase is significantly above market rates, the Tribunal has the power to set the rent at a lower, market-appropriate level. Landlords must ensure their proposed rent is justifiable with robust market evidence, as failing to do so can lead to a lower rent being set and potential tribunal costs. For instance, if a landlord proposes a £1,200 rent, but the tribunal determines £1,050 is market value, that will be the new binding rent.
## Renovations That Typically Add Rental Value
* **Modern Bathroom & Kitchen:** Upgrading these areas can significantly increase appeal and rental value. A new kitchen could add £50-£100 to monthly rent, especially in family homes.
* **EPC Upgrades:** Improving energy efficiency to meet or exceed the current E rating and future C-equivalent by October 2030 can attract tenants and reduce voids. Investing £3,000 in insulation could result in a higher rent and lower running costs for tenants.
* **Additional Living Space (where feasible):** Small extensions or clever reconfigurations, like converting an unused garage into a usable room, can increase market appeal.
## Renovations That Often Don't Pay Back
* **Over-the-Top Luxury Finishes:** High-end marble or bespoke carpentry often doesn't yield a proportionate return in standard rental markets. Tenants may appreciate it, but won't pay significantly more.
* **Highly Personalised Decor:** Bright, unconventional paint colours or unique wallpaper can alienate potential tenants who prefer neutral spaces they can personalise.
* **Structural Changes for Marginal Gain:** Moving non-load-bearing walls for a slightly larger room often incurs high costs without a significant rental uplift.
## Investor Rule of Thumb
Always ensure any proposed rent increase is justifiable with current local market evidence, as this is your primary defence against tenant challenge or tribunal intervention.
## What This Means For You
With Section 21 now abolished, understanding the precise legal pathways for rent increases via Section 13 notices is more important than ever. You need to ensure your processes are robust and your proposed rents are defensible. This is exactly the kind of detailed compliance and strategic planning we focus on within Property Legacy Education, helping investors navigate these legislative changes effectively.
Steven's Take
The abolition of Section 21 fundamentally shifts how landlords manage tenancies, especially concerning rent increases. You must be proactive in proving your rent is fair and aligned with market rates. Don't speculate; check local listings, speak to agents, and gather solid evidence. A poorly executed Section 13 notice or an unjustified rent increase will not only be challenged but could also create longer-term tenancy issues. Focus on demonstrable value and adherence to formal procedures to protect your investment income.
What You Can Do Next
Review local market rents: Check property portals like Rightmove and Zoopla for 3-5 comparable properties in your area to justify your proposed rent.
Obtain Form 4 (Section 13 Notice): Download the official 'Form 4: Notice of application for a rent increase' from gov.uk and complete it accurately.
Serve the notice correctly: Send the completed Form 4 via recorded delivery post, or hand-deliver and obtain a signature, to each tenant named on the tenancy agreement.
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