# reusedSerializedFileSize

> Size, in bytes, of the serialized files reused from previous builds rather than rebuilt.

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor.Build.Reporting](/engine/6000.7/script-reference/unityeditor/build/reporting.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public ulong reusedSerializedFileSize { get; }
```

### Remarks

This only accounts for serialized files. Resource files are excluded because resource content can be shared across multiple serialized files, making per-file reuse attribution inaccurate. This size is calculated before any compression is applied.