The short answer
Step by step, on a page of its own, in the order it happens. Checks, references, interviews, qualifications. Named accurately, with who does what and how recent each has to be. Families choose an agency over a marketplace precisely for this, and they want to see it before they enquire.
A sentence saying "all our nannies are fully vetted" does none of that work.
The four things a parent is actually asking
Has someone checked this person's record? Name the check you require rather than describing it loosely. The DBS certificate in the UK, state and federal background checks in the US, a police check with vulnerable sector screening in Canada, a Working with Children Check in Australia. Say how recent it must be and who sees it.
Has someone spoken to people who employed them? Say how many references you take, how far back, and whether you speak to referees rather than accepting written letters. Method is what separates agencies here.
Has someone met them? Say who interviews, how long it takes, whether it is in person or by video, and what you ask about, including employment gaps and safeguarding scenarios.
Are the certificates real? Say that you sight childcare qualifications, paediatric first aid with its expiry date, and safeguarding training, rather than taking a CV at its word.
Answer those four in order and the page is most of the way written.
Say what you do not do
The strongest paragraph on the page. You introduce; the family interviews, decides and employs. You cannot guarantee anyone's future conduct. Recommend that the family meets the candidate at home, involves the children, has their own conversation with a referee and agrees a trial period.
Parents recognise honesty. An agency that only describes success reads as marketing; one that describes its limits reads as professional.
Deal with the date problem
Every check describes the day it was issued. Say what you do about that: how often you refresh checks, what you require at re-registration, when first aid must be renewed, and whether a candidate who has been on your books for years has been rechecked. If you use a mechanism that keeps a check current, such as an update service where one exists, say so.
This is the question families do not know how to ask and are quietly worried about.
Keep the language accurate and local
Vetting rules, registers and terminology differ by country and sometimes by state or province. Name only the regimes you are confident apply where you place, describe the rest generically, and take local advice rather than copying wording from another market. Treat anything you read online, including this post, as orientation rather than legal advice.
Never claim a registration, accreditation or association membership you do not hold or that has lapsed.
Where the page lives and what it links to
A full vetting page under the family route, plus a five or six line summary on the family landing page linking to it. Reference it from the fees page too, because fee objections are usually vetting questions in disguise.
End the page with the family enquiry form. A parent who has just read your process is at the exact moment of wanting to talk to you.
What not to put on it
No candidate documents, certificate scans or check reference numbers anywhere on the public site. No photographs of children you do not have consent for. No invented percentages such as a rejection rate you cannot evidence. No trust badges that link nowhere.
If you want to show scale, describe your process, not your statistics.
Make it easy to keep true
Build the page as records rather than a slab of text: one record per stage, with a number, a name, a summary line and the detail. When you change a requirement, you edit one field. A vetting page that has drifted out of date is worse than none, because families rely on it.
Where this sits
A step by step vetting page, an honest statement of what the family must do, and a refresh policy that is actually followed are part of every nanny agency website we build, and the same trust pattern runs through our other childcare websites. The packages are on pricing. Show the checking and the fee stops being the conversation.