Section 13 notice with the wrong tenancy type: when it's a knockout defect (and when it isn't)

If you've just opened a Section 13 notice and something about it feels off — the tenancy it describes doesn't match the one you actually have — trust that instinct. Tenancy type sits at the very heart of Section 13. Get it wrong, and the notice may be invalid on its face, long before anyone starts arguing about whether the new rent figure is fair.

We'll walk you through this calmly. You don't need a law degree, you don't need to panic, and you don't need to pay the higher rent tomorrow. What you need is your tenancy agreement, ten quiet minutes, and the five checks below. By the end you'll know whether your notice has a real tenancy-type defect — the kind that can knock it out — or a cosmetic wobble that tribunals will shrug off.

Why tenancy type matters for Section 13

Section 13 of the Housing Act 1988 is a specific tool for a specific type of tenancy. It isn't a general "the landlord wants more rent" form — it's a statutory mechanism with strict entry requirements. If your tenancy doesn't fit those requirements, the notice can't do what it's trying to do.

Here's the short version of who Section 13 applies to in England:

• Statutory periodic assured and assured shorthold tenancies — the rolling tenancy you end up on after a fixed term expires.
• Contractual periodic assured / assured shortholds — tenancies that were always periodic from the start.
• From 1 May 2026 under the Renters' Rights Act (RRA): assured tenancies become the default across most of the private rented sector, and Section 13 remains the primary rent-increase route.

And here's who Section 13 does not apply to:

• Fixed-term tenancies mid-term — unless the agreement contains a rent review clause that itself references Section 13 (rare, and from 1 May 2026 such clauses are void under the RRA).
• Lodgers and licensees — if your landlord lives in the same property as their only or main home, you're almost certainly a lodger with a licence, not an assured tenant.
• Company lets — where the tenant on the agreement is a limited company, not an individual.
• High-rent tenancies above the assured ceiling — currently tenancies with rent over GBP 100,000 per year fall outside the assured regime.
• Rent Act 1977 regulated tenancies — very rare now, usually pre-January 1989.
• Holiday lets, Crown tenancies, and some resident-landlord shares.

So tenancy type isn't a detail. It's the threshold question. A Section 13 notice served on the wrong kind of tenancy isn't a slightly wrong notice — it's a notice served under a law that doesn't apply to you.

The 5 tenancy-type diagnostic checks

Run these in order, with your tenancy agreement in front of you.

1. Is your tenancy actually assured or assured shorthold?

Open your signed agreement and search for the exact phrase "assured shorthold tenancy" or "AST". Most standard England tenancies from the last 30 years are ASTs, so this check usually passes — but not always. If your agreement describes itself as a "licence", a "lodger agreement", a "company let", or a "common law tenancy", you may be outside Section 13 entirely. That's a big deal, because it means the notice simply cannot apply to you.

2. Is the tenancy currently periodic?

Section 13 (before 1 May 2026) needs your tenancy to be periodic. There are two kinds:

• Statutory periodic — your fixed term ended and you stayed on, with no new agreement signed. The tenancy automatically rolls on the same terms, month-to-month (or whatever your rent period is).
• Contractual periodic — the agreement was always periodic from day one, with no fixed term.

If you're still inside a fixed term that hasn't yet expired, the standard Section 13 route usually isn't available. Which leads straight to check 3.

3. Has the fixed term expired?

Find your tenancy start date and the fixed-term length in your agreement. If today's date is still inside that window — say, you're six months into a 12-month fixed — Section 13 cannot normally be used to raise your rent. The only exception (pre-1 May 2026) is if your agreement contains a rent review clause that specifically calls up Section 13 as its mechanism. That's uncommon, and from 1 May 2026 such clauses are void under the RRA.

4. Are you a lodger or a licensee?

Does your landlord live in the same property as their only or main home? Do you share a kitchen or bathroom with them? If yes, you're almost certainly a lodger with a licence, not an assured tenant. Section 13 does not apply to lodger arrangements. Landlords in that situation have to use the terms of the lodger agreement itself (or general notice rules), not Section 13.

5. Is the property above the assured tenancy rent threshold?

The assured regime applies to tenancies where the annual rent is GBP 100,000 or less. Most renters — including almost everyone in London outside a small band of prime properties — are comfortably under this. If your rent is above GBP 100,000 a year, the tenancy may fall outside the assured regime, and Section 13 doesn't apply. This is a rare edge case but worth knowing.

If any one of these checks produces a "no", you may have grounds to challenge the notice on tenancy-type alone.

What the notice itself should say about tenancy type

A valid Section 13 notice is served on a prescribed form. Pre-1 May 2026 it's Form 4; from 1 May 2026, under the RRA, it's Form 4A. Both forms require the landlord to:

• Identify the parties (landlord and tenant names, correctly spelled).
• Identify the property (full address).
• Confirm the tenancy is an assured or assured shorthold tenancy (or, post-1 May, an assured tenancy under the new default).
• State the current rent, the proposed new rent, and the date the new rent takes effect.
• Give at least one rental period's notice (and no less than one month, no more than it should be).

If the landlord has ticked the wrong tenancy-type box on the form, or described a tenancy that doesn't reflect the one you actually hold, that's usually a substantive defect. Tribunals don't tend to be generous about mis-stated tenancy type, because the category is what gives the notice its legal power in the first place.

Three wrong-tenancy-type scenarios

Here are the three most common patterns we see, with a response approach for each. These are starting points for a polite, firm written reply — not scripts to copy word-for-word.

Scenario A — The fixed term hasn't ended

Your notice names an AST, and that bit is right. But you're six months into a 12-month fixed term. The notice tries to raise the rent from, say, month nine.

Response pattern: "This notice cannot take effect before the fixed term expires."

Your reply should reference the start date, the fixed-term length, and the clause in your agreement that sets it. State that Section 13 does not apply during the fixed term (absent a qualifying rent review clause), and ask the landlord to withdraw the notice. Keep it calm, one page, in writing.

Scenario B — You're actually a lodger

Your "landlord" lives in the same property as their only home. You share the kitchen. Your notice is on Form 4 (or Form 4A) and calls you an AST tenant.

Response pattern: "Section 13 does not apply to resident-landlord arrangements."

Your reply should set out the facts — that the landlord lives in the property as their only or main home, that you share living accommodation, and that your arrangement is a licence, not an assured shorthold. Ask them to withdraw the Section 13 notice. If they want to change the rent, they'll need to follow whatever the lodger agreement says.

Scenario C — Contractual periodic with its own rent review clause (pre-1 May)

Your tenancy has always been periodic, and the written agreement contains a clause that says rent can be reviewed in a specific way — for example, annually, by reference to CPI, with 60 days' written notice. The landlord has ignored that and served Section 13 instead.

Response pattern: "The contractual mechanism applies, not Section 13."

Your reply should point to the specific clause in the agreement, explain that it governs rent increases for this tenancy, and ask the landlord to follow that process. Note: from 1 May 2026, contractual rent review clauses in assured tenancies become void under the RRA, and Section 13 becomes the route. So this scenario is specifically a pre-1-May-2026 argument.

What to do in the first 48 hours if you spot the defect

Five things, in order:

1. Don't ignore the notice. Silence reads as acceptance. You want a short written reply on the record.
2. Don't pay the new rent yet. Keep paying your current rent in full and on time. Paying the new amount can be treated as agreement to it.
3. Get your tenancy agreement out. Photograph it, scan it, or screenshot the key clauses — start date, fixed term, tenancy type, any rent review clause.
4. Send a brief, calm written reply. Email is fine. State which tenancy-type check the notice fails, reference the specific clause or fact, and ask the landlord to withdraw or re-serve correctly. Keep it one page, one tone — neutral and factual.
5. Keep a paper trail. Save your reply, any landlord response, and your rent payment records. This is the evidence bundle that matters if anything escalates.

What happens at a tribunal if you challenge the notice

If your landlord won't back down, the next step is the First-tier Tribunal (Property Chamber — Residential Property). Before 1 May 2026, the tribunal decides what the market rent should be. From 1 May 2026, under the RRA, there are some important changes:

• Tribunal fee: GBP 47 from 1 May 2026.
• Tribunals cannot set rent higher than the landlord's proposed figure — so challenging is no longer a gamble where you risk a higher rent being imposed.
• No backdating from 1 May 2026 onwards — any increase only takes effect from the tribunal's decision date.
• Before 1 May 2026, the old rules on backdating still apply.

Here's the critical point for tenancy-type defects: the tribunal can only set a rent if the notice itself is valid. A Section 13 notice served on the wrong tenancy type is typically thrown out on validity grounds before anyone argues about whether the proposed rent is reasonable. That's why tenancy-type defects are often called "knockouts" — they stop the notice at the door.

What to do if the landlord refuses to re-serve a valid notice

You have three sensible options:

• Option A — Hold the line. Keep paying your current rent. Document every exchange. If the notice is genuinely invalid, the higher rent has no legal foothold.
• Option B — Ask in writing for a corrected notice. Sometimes landlords are simply using out-of-date templates. A polite request for a corrected Form 4 / Form 4A often gets a better reply than a combative one.
• Option C — Escalate to Shelter or Citizens Advice. If the landlord starts threatening eviction, that's a different process — Section 21 or Section 8 — and outside the scope of this guide. Shelter's helpline and Citizens Advice can help you understand what's actually being threatened.

When a wrong-tenancy-type claim will NOT save you

Honesty matters here. Not every tenancy-type wobble is a knockout.

• Cosmetic mis-labelling — a spelling error, a wrong postcode digit, or calling it an "assured shorthold tenancy" when your agreement says "AST" — tribunals often treat these as minor errors and overlook them if the substantive facts are right.
• A re-served correct notice. If the landlord withdraws the defective notice and serves a correct one the next day, the clock on the new notice starts then. You've bought time, not a permanent outcome. That time still has real value — you've delayed the increase, you've preserved your current rent, and you've put the landlord on notice that you read things carefully.
• When the substantive facts actually do match. If the notice says "AST" and you do genuinely have an AST on a statutory periodic basis, the tenancy-type argument won't work. You'd need to look at other grounds — timing, rent figure reasonableness, form errors — instead.

The 5-step checklist to bring to the RentSOS free check

When you run your notice through our free check, have this ready:

1. A photo or scan of your current Section 13 notice (all pages, including the signature panel).
2. A copy of your signed tenancy agreement — especially the first page and any rent review clause.
3. Your tenancy start date and the length of any fixed term.
4. The name and living arrangement of your landlord — specifically, do they live in the property as their only or main home?
5. Your current monthly rent and the proposed new rent, plus the date the increase is meant to take effect.

With those five pieces of information, we can walk you through whether your notice has tenancy-type grounds, whether there are other defects worth raising, and what a calm, firm written reply should look like. The check is free. If we spot grounds you can use, our paid pack is GBP 14.99 and gives you the full response template, the tribunal-ready bundle, and the next-step guidance.