Material Information for Rental Adverts UK 2026 (NTSELAT Parts A, B, C)

General information, not legal advice. Advertising rules are enforced by Trading Standards and the portals; if a listing is challenged, take advice before you re-publish.

Most landlords think the legal risk in a let starts at move-in. In 2026 it starts at the advert. Since 2023, UK property listings — sales and lettings — must disclose “material information,” the set of facts a reasonable tenant needs before deciding to view or rent. Rightmove and Zoopla now reject or hold listings that leave the required fields blank, and Trading Standards can act against misleading or incomplete adverts under consumer protection law.

This guide, for landlords and agents alike, covers exactly what the three parts require, who enforces them, and how to get an advert live and compliant the first time instead of having it bounced.

Where the rule comes from

Material information disclosure sits under the Consumer Protection from Unfair Trading Regulations (now carried into the Digital Markets, Competition and Consumers Act 2024), and was turned into a concrete checklist by the National Trading Standards Estate and Letting Agency Team (NTSELAT) working with the major portals.

The principle is simple: a tenant should not have to chase you for basics that change whether the property is right for them. Omit something material, or imply something untrue, and the advert is a potential misleading action or omission — a civil and in some cases criminal matter, separate from anything that happens later in the tenancy.

Part A — the basics, required on every listing

Part A applies to every property and a listing cannot go fully live without it:

These are the fields portals enforce hardest. A blank council tax band is the single most common reason a listing is held.

Part B — the standard details a tenant expects

Part B is information that most tenants will want and you should provide as standard:

Leaving these blank does not always block the listing, but it lowers quality, deters serious enquiries, and — if the gap turns out to be material to a particular tenant — still carries risk.

Part C — the things that affect some tenants

Part C is information that affects some tenants and must be disclosed where it applies:

Part C is where honesty matters most. You disclose what applies and stay silent on what does not — but you must not bury or omit a known issue that would change a tenant’s decision.

For agents: a portal rejection is a client-facing failure

For a managed property, an advert held or rejected by the portal is the most visible way to look unprofessional to a landlord client, and a misleading-advert complaint is one a redress scheme takes seriously. The expectation is that every listing leaves the branch with Parts A and B complete and Part C correctly addressed, consistently, across every negotiator. The agencies that avoid trouble are the ones where completeness is checked before publish, not after a portal bounces it back.

Getting it complete before you publish

The reason material information gets missed is that it is scattered: the council tax band is on one document, the EPC has the heating type, the deposit is in your head, flood risk is a separate check. By the time you write the advert, something is always left blank.

That is the gap LetCompliance closes. The advert builder has the NTSELAT Parts A, B and C fields built in with a completeness check that flags exactly what is still missing before the listing can go live — council tax band, deposit, heating, broadband, parking, building safety, flood risk — so the advert publishes complete the first time and the disclosure is recorded as evidence on the property file. From there the same listing takes applications and viewings without re-keying anything.

The one-line takeaway

In 2026 the advert is a compliance surface: fill Part A (rent, deposit, council tax band, type) on every listing, provide Part B (heating, water, broadband, parking) as standard, and disclose Part C (flood, building safety, restrictions) wherever it applies. Complete it before you publish, not after the portal rejects it.

Start a LetCompliance trial to build adverts with the material-information checklist baked in, or read how to advertise and fill voids fast next.