Schema markup is code added to your website that tells search engines — and AI search systems like ChatGPT, Perplexity, and Google's AI Overviews — exactly who your business is, what services you offer, where you operate, and how to contact you. It is not visible to website visitors. It is read by machines. And for local businesses competing in search, having it set up correctly is one of the highest-leverage improvements you can make.
Why machines need structured data
When a search engine or AI model reads your website, it is looking for signals to understand your business. Without schema, it reads your text and makes inferences — which is error-prone. With schema, you give it a structured, explicit data feed: this is the business name, this is the address, these are the services, this is the service area, these are the hours, this is the phone number, these are the reviews. The machine does not have to guess. Explicit data consistently outperforms inferred data in search rankings and AI citations.
What LocalBusiness schema does
LocalBusiness schema — and its more specific variations like RoofingContractor, HVACBusiness, PlumbingContractor, and LandscapingBusiness — is the foundation. It tells Google that your website represents a real physical business, where that business is located, what geographic area it serves, when it is open, and how to reach it. When this schema is correctly implemented, your business becomes eligible for rich results in Google Search and for citation in AI-generated answers about local services.
FAQPage schema and AI search
FAQPage schema marks up questions and answers on your site as structured data. Google uses it to generate the expandable FAQ blocks you see in search results. More importantly, AI search systems — ChatGPT browsing, Perplexity, Google AI Overviews — use FAQPage-marked content as source material for generated answers. A page with properly structured FAQs about your service and location is more likely to be cited when someone asks an AI 'who does roof replacement in [city]?' than a page with the same information in unstructured paragraphs.
The schema graph — why individual blocks are not enough
Many websites have a single LocalBusiness schema block and nothing else. A complete schema implementation connects multiple entity types: your Organization, your physical location as a LocalBusiness, the individual Services you offer, your founding Person, and BreadcrumbList navigation. Each entity links to the others via @id references. This linked graph gives AI systems a complete, corroborated picture of your business — not just a single data point. The difference between a single block and a full graph is the difference between a business card and a complete profile.
How to check if your site has schema
Go to Google's Rich Results Test at search.google.com/test/rich-results and enter your website's URL. If the test comes back with no detected items, your site has no schema. If it shows items, review them carefully — many auto-generated schema implementations have errors or missing required fields. Pay attention to warnings. A schema block with an error is often worse than no schema because it can create conflicting signals. The test will tell you exactly what is present and what is wrong.
Next Step
Schema is phase 6 of 15.
The audit reviews your full schema graph — LocalBusiness, Service, FAQPage, BreadcrumbList, and SpeakableSpecification — and delivers corrected JSON-LD for every page that needs it. Most sites have either nothing or enough errors to limit rich results eligibility.