---
title: minimumZ
framework: mapkitjs
role: symbol
role_heading: Instance Property
path: mapkitjs/tileoverlay/minimumz
---

# minimumZ

The minimum zoom level for a tile overlay.

## Declaration

```data
get minimumZ(): number | null;
set minimumZ(minimumZ: number | null);
```

## Discussion

Discussion By default, the minimum zoom level for a tile overlay is the same as the minimum zoom level for MapKit JS built-in tiles. MapKit JS requests the overlay tiles when the map is above or at this zoom level. The default value is null.

## See Also

### Setting overlay appearance

- [opacity](mapkitjs/tileoverlay/opacity.md)
- [maximumZ](mapkitjs/tileoverlay/maximumz.md)