[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [local‑first/Shared](https://evolu.dev/docs/api-reference/common/local-first/Shared) › SyncTenantOwner

```ts
type SyncTenantOwner = WritableSyncTenantOwner | ReadonlySyncTenantOwner;
```

Defined in: [packages/common/src/local-first/Shared.ts:685](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/common/src/local-first/Shared.ts#L685)

An owner registered by any instance of an [ActiveSyncTenant](https://evolu.dev/docs/api-reference/common/local-first/Shared/interfaces/ActiveSyncTenant): `Writable`
when any registration holds its write key, otherwise `Readonly`.