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How to Change a SharePoint Subsite Layout Without Affecting the Main Site

WPS Content Manager Sep 28, 2026 869 views

Question details

The user wants to customize the design, layout, and navigation of a SharePoint subsite without the changes reflecting on the parent site.

How to Change a SharePoint Subsite Layout Without Affecting the Main Site

Product: Microsoft SharePoint
Device & OS: not provided
Scenario: Customizing the structure and modern pages for a specific team or project subsite.
Observed behavior: Changes made to the subsite's layout or navigation inadvertently alter the main site because inheritance settings are actively linking them.

Before you start

Ensure you have Site Owner or Administrator permissions for the subsite to access and modify site inheritance and navigation settings safely.

Solution 1Recommended

Disable Theme and Navigation Inheritance

Break the link between the parent site and the subsite so that layout, navigation, and theme changes only apply locally.

By default, SharePoint subsites inherit the look and feel of their parent sites to maintain consistency. Disabling this allows complete independent customization.

Access Site Settings

Navigate to your SharePoint subsite. Click the Gear icon (Settings) in the top right corner and select 'Site information', then click 'View all site settings'.

Modify the Look and Feel

Under the 'Look and Feel' section, click on 'Master page' or 'Change the look' depending on your SharePoint version.

Break Theme Inheritance

Select 'Specify a theme' instead of 'Inherit theme from parent of this site'. Apply your desired subsite theme.

Update Navigation Settings

Go back to Site Settings, click on 'Navigation', and uncheck 'Display the same navigation items as the parent site'. Click 'OK' to save.

Disable Theme and Navigation Inheritance

Modern SharePoint Sites: In modern SharePoint experiences, Microsoft recommends using Hub Sites to organize flat site structures rather than relying heavily on deeply nested subsites.

Solution 2

Create and Set a Unique Modern Site Page

Create a completely new modern page in the subsite's Pages library and configure it as the standalone homepage.

Solution 3

Apply Custom Layouts Using PowerShell

For advanced layout changes, administrators can use PowerShell scripts to deploy custom site templates specific to a subsite.

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Frequently Asked Questions

Why does my main SharePoint site change when I edit a subsite?

This happens because the subsite is configured to inherit the parent site's navigation, theme, or master page. Any updates cascade. You must break this inheritance in the subsite's Site Settings to make independent changes.

Can I use different web parts on a subsite compared to the parent site?

Yes. Once you create a standalone modern page on the subsite, you can add, remove, and configure any web parts independently without affecting the parent site's layout.

Are subsites still recommended in modern SharePoint?

Microsoft generally recommends using a flat site architecture with Hub Sites instead of deeply nested subsites. This simplifies permission management, layout consistency, and content organization.

How do I restore inheritance if I make a mistake?

You can restore inheritance at any time by navigating back to the subsite's Site Settings. Under 'Look and Feel', select 'Inherit theme from parent of this site', or under 'Navigation', check the box to inherit parent navigation items.

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