Lawful rent increases, calculated properly.
A specialist tool for Section 13 rent notices. Input your tenancy — we'll apply the dates, draft Form 4A, and keep an audit trail.
- Section 13 specialist
- Effective 1 May 2026
- England only
Section 13 · Quick check
MONTHLY · England- Earliest effective date
- 01 Aug 2026
- Increase
- £1,495.00+6.8%
- Interval
- 52 weeks
Watermarked preview · No signup required
How it works
Three steps. No ambiguity.
Each step is checked against the statute and logged to your audit trail. The arithmetic, the form, and the record — built so they survive a Tribunal review.
The calculator does the arithmetic.
Input your tenancy details. We apply the Section 13(2) eligibility check, the 12-month interval, and align the effective date to your rent period.
Form 4A generated instantly. No manual filling.
Every field on the draft Form 4A is populated from your inputs — no re-typing, no misalignment. Hash-stamped for the audit trail.
Form 4A
Landlord's notice proposing
a new rent
Every tenancy tracked. Every notice recorded.
The dashboard tells you which tenancies need attention this month and keeps an immutable trail of every calculation, generation, and service event — retained for six years.
Built for compliance
Built around the law. Updated for what's coming.
Noticr generates Section 13 notices tested against the Housing Act 1988, the Renters' Rights Act 2025, and 50 years of statutory amendments and tribunal case law.
Built around section 13 of the Housing Act 1988 — the statutory mechanism for rent increases on assured tenancies. Every notice includes the dates, prescribed information, and Form 4A wording the law requires.
Patched on day one for the Renters' Rights Act 2025. The new 2-month notice period, the changes to fixed-term tenancies, the updated tribunal challenge process — all live from 1 May 2026.
Catches the four issues that invalidate a Section 13 notice: the 53-week rule, missing first post-2003 increase data, weekday alignment errors, and notice-period miscalculation. Surfaces the problem before you serve.
Noticr is a tool, not a law firm. Audit-ready output. You sign the notice.
Generate your Form 4A freeFree guides
Everything you need to know about Section 13.
Plain-English explainers written around the statute, not around it. Updated for the Renters' Rights Act 2025.
7 Section 13 Mistakes That Invalidate It
The 7 procedural errors that void a Section 13 notice on its face — short notice, wrong form, mid-period dates, the new s.14ZB cap.
Read guideNo noticeNo Form 4A, No Rent Increase
What happens if your landlord raises rent without a Form 4A — and the transitional trap for pre-1 May 2026 notices.
Read guideForm 4AForm 4A Template UK 2026
The current form, the 2026 notice period change, and the four mistakes that void your notice before you serve it.
Read guideRRA 2025Renters' Rights Act 2025: Landlord Guide
What changed on 1 May 2026, what didn't, and the new s.14ZB tribunal cap most coverage missed.
Read guideRent amountsHow Much Can I Increase Rent?
No cap exists — but the tribunal applies a market rent test. ONS data, comparable evidence, and a worked example.
Read guideSelf-diagnosticIs My Section 13 Rent Increase Invalid?
A 7-point validity check tenants and landlords can run in 5 minutes — Form 4A version, signature, dates, figures.
Read guideService rulesHow to Serve a Section 13 Notice
Post vs personal vs email. Deemed-service dates. What to keep as proof, and for how long.
Read guideAgent liabilityLetting Agent Made a Section 13 Mistake?
Who pays when an agent botches a notice — liability, professional negligence, and the s.14ZB consequence.
Read guideFigure errorsWrong Rent Figures on Form 4A
Swapped numbers, increase shown instead of total, decimal slips — the 6 figure errors that void a Section 13 notice.
Read guideCase lawMooney v Whiteland [2023]
The Court of Appeal case that voided a Section 13 notice over a Friday effective date — the strict alignment rule.
Read guide53-week ruleThe 53-Week Rule Explained
Section 13(3B) Housing Act 1988. Why long-running tenancies sometimes require 53 weeks, not 52.
Read guideGet started today
Get ready before the next rent review.
Every rent increase you manage manually is one miscalculation away from a tribunal challenge. Noticr helps you get the dates right — with an audit trail from day one.
Built for letting agents and portfolio landlords · England only · Audit-ready