Section 13 Rent Tribunal Challenge 2026

You want to put the rent up, and your tenant now has a free and simple way to push back. This guide shows you how to set a rent that holds up if they do, how the Tribunal process runs from start to finish, what evidence wins, and how to make a referral less likely in the first place.

The rules first. Under the Renters’ Rights Act 2025, the only way to raise the rent on an assured periodic tenancy in England is a formal rent increase notice (Section 13). You can use it not more often than every 52 weeks, with at least 2 months’ notice. Any rent-review clause that previously sat in your tenancy agreement is now unenforceable.

The tenant can challenge the increase at the First-tier Tribunal (Property Chamber, Residential Property) before the notice takes effect, and there is no tenant fee to apply. Under the RRA’s new rule, the Tribunal may determine a higher or lower open-market rent, but the tenant can never be required to pay more than the landlord proposed. So you face one-way downside risk on every Section 13 notice you serve.

Disclaimer: this is editorial guidance. Complex or high-value rent-tribunal cases warrant a chartered surveyor’s valuation report and legal representation.

The rules in 2026

Section 13: the only rent-increase route

Under the Housing Act 1988 s.13, a landlord of an assured periodic tenancy in England must use Form 4A (the prescribed Section 13(2) notice) to propose a rent increase. Key requirements:

• Minimum 2 months notice from service to effective date
• At least 52 weeks between increases on the same tenancy, occasionally 53 under the Note A3 correction
• Prescribed Form 4A (using outdated or non-prescribed forms voids the notice)
• New rent must be stated, not a percentage or formula
• Effective date must fall at the start of a rental period

What the Renters’ Rights Act 2025 changed

Three material changes:

1. 1All periodic tenancies are Section 13 territory. Pre-RRA, some landlords used rent-review clauses in fixed-term ASTs to avoid Section 13. Fixed terms are now gone, so every rent rise is a Section 13.
2. 2A referral cannot raise the rent above your proposal. The single biggest change for landlords. The tribunal decides the open-market rent, and the tenant pays that figure only if it is lower than the rent the landlord proposed; otherwise the proposed rent applies. This removes the old "bidding risk" that deterred frivolous tenant referrals.
3. 3Deferred effective date if referred. If the tenant applies to the Tribunal before the increase takes effect, the new rent does not take effect until the Tribunal decision date (or a date the Tribunal sets). The tenant remains on the old rent during the process.

What this means commercially

Because the Tribunal can only reduce or confirm the proposed rent, a tenant has no downside from applying.

You can no longer set an optimistic headline rent and settle for the middle: you need to pitch the increase at a defensible market rent from the start.

From £7.99 a month, on paid plans, LetCompliance dates the Form 4A for you with the two-month and 52 or 53-week rules checked, and keeps the notice on the property record next to the rent history. Get started

How the tenant’s referral works

Tenant’s timeline to apply

The tenant must apply to the First-tier Tribunal before the new rent takes effect. They use Form Rents1 (UK property chamber form) and submit to the regional FTT office.

Fee: zero.

Acknowledgement and directions

The Tribunal then issues:

• An acknowledgement confirming receipt
• Directions setting deadlines for landlord and tenant to submit evidence bundles
• A hearing date, or notice that the case will proceed on papers

Paper determination vs oral hearing

A case can be decided on papers (no oral hearing), and either party can ask for an oral hearing.

The Tribunal’s job

Under s.14 Housing Act 1988 (as amended), the Tribunal must determine the rent the property could reasonably command in the open market. That is the hypothetical rent a willing landlord and a willing tenant would agree for the same property in its current condition, disregarding any effect on rent of the tenant’s improvements.

Post-RRA, the Tribunal cannot set a rent above the landlord’s proposed rent.

The decision

The Tribunal sends a written decision. The decision:

• Sets the rent (≤ landlord’s proposal)
• States the effective date (usually the date originally specified in the Section 13 notice, or the decision date, whichever is later)
• Is binding and only appealable with permission on a point of law

What evidence wins a Section 13 case

1. Comparable evidence (the most important)

The Tribunal is a comparables-based body. Bring 3+ comparable current lettings of similar properties in the same area:

• Rightmove / Zoopla screenshots dated within the last 30 days, showing asking rent, size, condition, terms
• Agent confirmations (emailed) of actual let rents in the last 3–6 months. These carry more weight than asking rents
• Photos of comparable exteriors where possible (to show property type/condition similarity)

Comparables should match on: bedrooms, property type (flat/house/terrace/semi/detached), location (same postcode or within 0.5 miles for urban, 1–2 miles for rural), condition (standard / above / below), letting terms (furnished / unfurnished, pet policy).

2. Condition evidence

Photos of the property interior (every room), exterior, and any specific features (garden, parking, appliances). Dated photos from the last 30 days are ideal.

3. Certification evidence

Bring your current:

• EPC (Band E+ minimum, Band C adds market premium)
• Gas Safety Certificate
• EICR

Well-certificated properties justify higher market rents. A Band A–C EPC is a meaningful data point for the Tribunal.

4. Improvements since the last review

If you’ve done capital improvements since the last rent review (new kitchen, new bathroom, double glazing, solar, etc.), bring invoices and before/after photos. The Tribunal can factor these into the market-rent assessment.

5. Professional valuation (optional but powerful)

A lettings valuation from a RICS chartered surveyor or a senior ARLA Propertymark letting agent produces an independent market-rent opinion. This carries significant weight, especially in high-value or contested cases.

6. Your current-tenancy context

Bring the current tenancy agreement, rent history (a simple ledger showing rent paid each month), and any prior Section 13 notices. This demonstrates the "uplift story": where rent has been and what the gap is to current market.

What does NOT win a Section 13 case

1. 1"My costs went up." The Tribunal’s job is to find market rent, not to cover your mortgage interest or insurance costs. Rising costs are irrelevant.
2. 2"Inflation / RPI / CPI." Tribunal rent reviews are not indexation exercises. An inflation argument without comparable evidence will be rejected.
3. 3"I need this rent to break even." Landlord commercial position is irrelevant. Tribunal sets open-market rent regardless of your yield.
4. 4"The tenant’s circumstances have changed." The Tribunal does not assess whether the tenant can afford the increase, only the market rent.
5. 5Generic Rightmove searches without filtering. A screenshot of Rightmove showing "average rent in SW17 = £2,200" without comparable specificity is weak evidence. You need like-for-like comparables.

The 7-step landlord playbook

Step 1: Set a defensible rent before you serve

Before drafting Form 4A, collect 5–7 comparable current lettings for your property. Pitch your new rent at around the median of those comparables, perhaps 5% below the top, to leave a buffer for the Tribunal’s discretion. Think of this as pricing to avoid challenge rather than maximising nominal uplift.

Step 2: Use the current Form 4A

Download Form 4A ("Landlord’s notice proposing a new rent for an assured periodic tenancy") from the current GOV.UK page. An outdated copy, or Form 4 (the social housing version), voids the notice.

Step 3: Serve the notice properly

• 2 months minimum notice
• Effective date must align with the start of a rental period
• Serve by a method that gives you proof of service (signed-for post, hand-delivery with witness, process server)

Step 4: Document everything

Save: Form 4A copy, proof of service, the comparables you relied on to set the rent (so if challenged, your evidence is ready). LetCompliance’s Section 13 builder keeps the notice and its dates on record; save your comparables alongside it.

Step 5: Watch for the tenant application

The tenant must refer the notice before the new rent takes effect, so watch for a referral until then. Tribunal letters can arrive by post or at your nominated email, so check both.

Step 6: Respond to Tribunal directions

When directions arrive, follow deadlines precisely. Prepare your evidence bundle including: updated comparables pack, condition photos, certificates, improvement invoices, optional professional valuation.

Step 7: Implement the outcome

• If no referral: rent increases as per Form 4A.
• If Tribunal confirms your rent: implement on the decision date.
• If Tribunal reduces your rent: implement the new rent on the decision date; you cannot claim backdated top-up for the processing period.

Minimising future referrals

Rent-review economics under RRA

You can’t increase the rent more often than every 52 weeks, and the Tribunal will never require the tenant to pay more than you asked for. It determines the market rent, which may come out higher or lower than your figure, but your own proposal caps what the tenant pays. So the traditional "annual 5% uplift" habit no longer serves you well. A better 2026 approach:

• Pitch at median market rent with a 3–5% safety margin below top comparables
• Serve 10–11 months after last review (not rushing to annual anniversary if rent is already at market)
• Skip reviews where market rent has barely moved and tenant is otherwise excellent
• Price new tenancies at market rent from the start, so later Section 13 rises stay modest

Track market rent quarterly

Don’t rely on a single comparables check at rent-review time. Track asking rents in your area every quarter using Rightmove/Zoopla filters. You’ll spot market shifts in time to calibrate your next notice.

Communicate with the tenant before you serve

A phone call or letter 3–4 weeks before Form 4A explaining the proposed increase and your reasons reduces the chance of a reflexive Tribunal application. Cooperative tenants who understand the market context are less likely to challenge.

Keep improvements documented

Every time you upgrade the property, log the work with invoice and photos in your document vault. At next rent review, you’ll have ready evidence to justify an uplift.

FAQs

How likely is a Section 13 challenge in 2026?

There is no reliable post-RRA data yet (the regime only began on 1 May 2026), so anyone quoting a hard percentage is guessing. What is certain is that the incentives now push challenges up. Referral to the First-tier Tribunal is free for the tenant, and the Tribunal may determine a higher or lower open-market rent, but the tenant can never be required to pay more than you proposed. So a tenant has everything to gain and nothing to lose by referring. Landlords who pitch well above market are the most exposed. Price to open-market evidence and keep comparables on file.

Can I withdraw a Section 13 notice to avoid the Tribunal?

The Act does not set out a way to withdraw a Section 13 notice, so take advice before you try. If the tenant has already applied to the Tribunal, you’ll need to co-operate with any directions.

Does a Tribunal rent decision bind future years?

No. The decision sets rent for this notice only. You can serve another Section 13 12 months later with a new proposed rent. The Tribunal’s earlier figure may be cited by the tenant in a second application, but it’s not formally binding on a fresh review.

Can I recover lost rent from the delay during the Tribunal process?

No. If the Tribunal confirms your proposed rent, the increase takes effect on the decision date. You cannot reclaim the period between your intended effective date and the Tribunal decision.

What if the tenant doesn’t pay the new rent after the decision?

Rent arrears arising from the new rent can support a Section 8 Ground 8 possession claim once arrears reach the statutory threshold. See the how to evict a tenant UK 2026 guide.

Related reading

• Section 13 rent increase notice: step-by-step: the notice itself
• Renters’ Rights Act 2025 checklist: the whole Act in one list
• How to evict a tenant UK 2026: if the tenant then fails to pay
• UK landlord compliance 2026: the basics that strengthen every rent review

Get started, from £7.99 a month. A rent review is part of running the let, so LetCompliance keeps it with the rest of the tenancy. On a paid plan the Section 13 builder fills in Form 4A with the dates worked out and keeps the notice on the property record. The rent ledger holds the rent history a Tribunal asks for, and your certificates, photos and invoices sit in the property’s documents. The comparables are yours to gather: the builder doesn’t include them.