Section 13 Rent Increase Notice
Form 4A
£24.99
- Form 4A and Rent Date Checked
- Next Day Delivery to Each Tenant
- Certificate of Service (N215) Emailed
See your notice before you pay. £12.99 for each extra tenant.
If a date we work out is wrong, we fix it and repost it free. Details
PostRight Ltd, company 17085271
- Letting agents charge from £210 for this
- Current prescribed Form 4A
- Posted same working day before 2.30pm
- Certificate of service included
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What It Costs to Serve a Section 13 Notice
Since 1 May 2026 the only way to raise the rent on an assured tenancy is a Section 13 notice on Form 4A. There are three ways to get one served.
Do it yourself
£0 to £19
- Form 4A completed for youno
- Two-month notice and start date worked outno
- Twelve-month rule checkedno
- Posted Royal Mail Tracked 24 to every tenantno
- Certificate of service (N215)no
- Posted the same working dayno
- Legal advice on your caseno
Get it wrong, the rent stays put
Break one of the three rules and the notice is invalid. The rent stays where it was until a fresh notice has run its two months.
Form 4A is free on GOV.UK. A template pack is about £19. You fill in, check, post and prove it yourself.
PostRight
£24.99
- Form 4A completed for youyes
- Two-month notice and start date worked outyes
- Twelve-month rule checkedyes
- Posted Royal Mail Tracked 24 to every tenantyes
- Certificate of service (N215)yes
- Posted the same working dayyes
- Legal advice on your caseno
Sign before 2.30pm, posted today
Printed and posted the same working day. Your tracking number is emailed once Royal Mail scans it.
Every step from the form to proof of service, done for you. £12.99 for each additional joint tenant.
Agent or solicitor
£210 to £375
- Form 4A completed for youyes
- Two-month notice and start date worked outyes
- Twelve-month rule checkedyes
- Posted Royal Mail Tracked 24 to every tenant(usually)usually
- Certificate of service (N215)(often extra)often extra
- Posted the same working day(varies)varies
- Legal advice on your caseyes
Same form, up to 15 times the price
For a routine rent increase, an agent or solicitor completes the same Form 4A. You pay up to £350 more for it.
Letting agents charge from about £210 for a rent review. Solicitors charge about £375 for the notice.
What a Wrong Notice Costs
Form 4A is a free download. These are the things landlords get wrong when they fill it in themselves, and what PostRight does about each.
The three rules.
At least two months' notice, only one increase in twelve months, and a start date on the first day of a rent period. Any one wrong and the rent stays where it was. The wizard checks all three before you pay. Fixing it means a fresh notice and another two months at the old rent, so a mistake on a £100 increase costs at least £200.
One copy per tenant.
Joint tenants each need their own copy. PostRight posts a separate tracked envelope to each tenant you name.
Proof it was served.
If the tenant says they never received it, you need to show they did. Every notice goes Royal Mail Tracked 24, and you get a certificate of service (court form N215) and a statement of posting by email once it has gone.
All of this for £24.99. A letting agent charges from about £210 for a rent review; the free form charges you nothing and covers none of it.
We stand behind every notice. If a date we work out is wrong, we fix it and repost it free. Details
What A Section 13 Notice Is
Since 1 May 2026, a landlord of an assured periodic tenancy can only raise the rent by serving a Section 13 notice on the prescribed form, Form 4A. Rent review clauses in tenancy agreements no longer apply. The notice must give at least two months' notice, can only be served once in any twelve months, and the new rent must start on the first day of a rent period. Get any of those wrong and the notice is invalid, and the rent stays where it was.

How It Works
- 1Answer the questions.Landlord, tenants, property, current rent, proposed rent, when the tenancy started, when the rent was last increased.
- 2Check the notice.You see the real Form 4A filled in as you type. We calculate the earliest valid start date and warn you if a date breaks the rules.
- 3Pay and we post it.Printed the same working day if you order before 2.30pm, posted Royal Mail Tracked 24 to each tenant, tracking number emailed to you.
What You Get
Form 4A, Posted To Every Tenant
Form 4A completed and checked, one copy posted to each tenant in its own tracked envelope
Certificate Of Service (N215)
Certificate of service (court form N215) for each tenant, pre-completed from our posting records, worth £9.99, included
Statement Of Posting
PostRight statement of posting, signed for the company, recording the posting date and tracking number
Every Email You Need
Confirmation email with your notice attached, tracking email per tenant, certificate email per tenant
See What Gets Sent


“Very easy to follow the instructions… letter arrived exactly on time”
Pricing
| First tenant | £24.99 |
| Each additional tenant | £12.99 each |
Form 4A is free on GOV.UK. Our fee covers completing it, checking the dates, posting it, and the certificate of service.
Start My NoticeRead More
The rules for a rent increase, what the tenant can do, and how to choose the figure.
Raising the rent
I spent four years in commercial debt recovery before starting PostRight, so I know how much depends on a notice being filled in and served properly. That is what this service is built to do.
Not sure about something? Ask us and we will reply within one working day.
Joshua Coley, Founder, PostRight
Frequently Asked Questions
At least two months from when the tenant is treated as receiving the notice. We add two working days for postal service, so the earliest start date the wizard allows is a little over two months from posting.
