Using the Schema.org types 'Organization', 'LocalBusiness' and 'LegalService' simultaneously for a law firm

Question

I created a JSON-LD schema for a law firm website. I've checked this code in Google Structured Data Testing Tool and there is no errors. But no syntax errors does not mean that the schema is good.

Can I use Organization, LocalBusiness and LegalService as type simultaneously?

{
"@context": "https://schema.org",
"@graph": [
  {
    "@type": [
      "Organization",
      "LocalBusiness",
      "LegalService"
    ],
"@id": "https://example.com/#legalservice",
"name": "Webiste name example",
"description": "Webiste description example",
"priceRange": "$$",
"url": "https://example.com/",
"logo": {
  "@type": "ImageObject",
  "@id": "https://example.com/#logo",
  "url": "https://example.com/logo.png",
  "width": 400,
  "height": 80,
  "caption": "Website name"
},
"image": {
  "@id": "https://example.com/#logo"
},
"telephone": "+00000000000",
"email": "email@example.com",
"hasMap": "http://maps.google.com/example",
"address": {
  "@type": "PostalAddress",
  "addressLocality": "Example city",
  "addressRegion": "Example state",
  "postalCode": "Example postal code",
  "streetAddress": "Example street"
},
"sameAs": [
  "http://facebook.com/exampleProfile",
  "http://twitter.com/exampleProfile"
],
"openingHours": "Mo,Tu,We,Th,Fr, 09:00-17:00"
  }
]
}

Answer 1

By definition, every LocalBusiness is also an Organization, and every LegalService is also a LocalBusiness.

Schema.org types inherit all their parent types:

• LocalBusiness:

  Thing > Organization > LocalBusiness

• LegalService:

  Thing > Organization > LocalBusiness > LegalService

So there is usually no need to specify the parent types in addition.

There is one case where it can be useful: if a consumer (like Google Search) doesn’t yet recognize a new type, it can make sense to provide the new unrecognized type in addition to the nearest recognized parent type. But if the type is correctly recognized, there is no benefit in providing its parent types in addition.

Answer 2

I will allow myself to give an answer in terms of a Google vision. Check the following Google guidelines for the type LocalBusiness:

Use the most specific LocalBusiness sub-type possible; for example, Restaurant, DaySpa, HealthClub, and so on.

Thus, it may be beneficial for a law firm to use a top-level type such as LegalService. However, it is worth paying attention to the fact that this type also has two more specifying types such as Attorney and Notary.

Using the most specific type will help users in their searches and can increase organic traffic to your website. Users who are looking for legal services can easily find your website if it has markup for the top-level type LegalServices. However, this may not be so easy when markup for type Organization or LocalBusiness. In this case, there will be a multitude of organizations and local businesses in SERP, among which your law firm may be lost. When specifying a type, for example for the type Notary, it will be in the SERP when searching for a notary.