Tools and providers
Part of Before you buy local SEO tools, define the question they must answer
Local SEO vendor due diligence means checking the paperwork first
Local SEO vendor due diligence covers five checks before you sign: company records, data handling, ranking claims, references and contract exit terms.
What to take away
- Due diligence answers one question: do you sign, renew or walk away?
- Check company records, data handling, ranking claims and exit terms, in that order.
- Score every shortlisted vendor against the same rubric so the quotes compare fairly.
- Log the date and source for each claim you verify, including your own notes.
The decision you are making
Due diligence rarely begins as a research project. A renewal date, a confident pitch or a new marketing lead usually triggers it.
Before you read any proposal, write down what would make you sign and what would make you walk away.
That framing keeps the process honest. You are gathering evidence for a decision, not collecting paperwork for its own sake.
If you need the wider market picture first, the tools and supplier guide for 2027 shows how the vendor categories fit together.
Company records first
Start with the legal entity. Search Companies House for the registered name, then read the filing history.
Look for late accounts, a recent name change, or a registered office that differs from the proposal address.
Ask who owns the business and who signs the contract. A trading name is not a contracting party.
If the vendor handles personal data, check its entry on the Information Commissioner's Office register. Request the data processing agreement before you share a client list.
Ranking promises under scrutiny
Any vendor promising a specific map position deserves scrutiny. Measure those claims against Google's official guidance on improving local ranking, which describes relevance, distance and prominence rather than a lever anyone can pull on demand.
Ask what the vendor controls and what it does not. Reviews, citations and website content sit in its hands. Competitor behaviour and proximity do not.
A supplier that explains its limits is easier to manage than one selling certainty.
Where the data comes from
Reporting tools usually pull place details, ratings and reviews through an API. The Places API documentation sets out which fields are available, so you can ask what a tool actually retrieves.
Ask how often records refresh, and what happens when a listing is merged or moved. Stale data produces confident reports that mislead.
Put the answer in writing before you sign.
Scoring vendors on a rubric
Use identical weightings for every shortlisted supplier. Score out of five per row, then multiply by the weight.
| Area | What good looks like | Weight |
|---|---|---|
| Company standing | Accounts filed on time | 15% |
| Data handling | Signed processing terms | 20% |
| Method | Documented process | 25% |
| Ranking claims | Limits explained | 15% |
| Contract and exit | Notice and handover terms | 15% |
| Team skills | Named staff, training record | 10% |
A vendor scoring below three on data handling or exit terms should not proceed, whatever the total.
Training and staff skills
Ask who will run the account day to day, not who pitched it. Then ask what training those people have completed.
The Chartered Institute of Marketing's training course list includes digital marketing and SEO-related options, which gives you a concrete way to compare claimed skills.
If the answer stays vague, ask for a named account lead and a short written summary of their experience.
Exit terms before signing
The end of a contract is where buyers often lose bargaining power. Fix notice periods, data handover and account access before anyone signs.
Decide who owns the Google Business Profile and the analytics property. A vendor should work inside your accounts, not its own.
For the practical side of a handover, how tool implementation works in practice covers access, ownership and the first weeks after a switch.
Common questions
What documents should a vendor provide?
Ask for the registered company name and number, a data processing agreement, a named account lead, a written method statement, and the notice and exit clauses. Anything missing is a question to ask, not automatically a rejection.
How long should due diligence take?
For a small retainer, two to three weeks is workable. Contracts that involve client data or a platform switch deserve longer.
Should you check a vendor's own search rankings?
It tells you less than buyers expect. A vendor's own site is a poor guide to how it will treat your listings, reviews and local pages. Check references and records instead.
