Get Available Site Templates in SharePoint using REST API

Syntax

http://<Site Url>/_api/web/getavailablewebtemplates(lcid, doincludecrosslanguage)
http://<Site Url>/_api/web/getavailablewebtemplates(lcid)

lcid - The REST API returns the site template based on the specified LCID.
doincludecrosslanguage – weather to include language neutral site template. default value “false”

1. Fetch all available site templates based on the Language code: 1033
   
   https://sharepointsite/_api/web/GetAvailableWebTemplates(lcid=1033,doincludecrosslanguage=true)
   
   https://sharepointsite/_api/web/GetAvailableWebTemplates(1033)
   
   
2. Fetch available site template based on the template category. Ex: “Collaboration”
   
   https://sharepointsite/_api/web/GetAvailableWebTemplates(1033)?$filter=(DisplayCategory%20eq%20'Collaboration')
   
   Returns the collection of Site Templates, categorized as “Collaboration”
   
   
3. Fetch the visible site templates
   
   https://sharepointsite/_api/web/GetAvailableWebTemplates(1033)?$filter=(isHidden%20eq%20false)
   
   
4. Fetch the hidden site templates
   
   https://sharepointsite/_api/web/GetAvailableWebTemplates(1033)?$filter=(isHidden%20eq%20true)
   
   
5. Fetch the site template based on the name:
   
   https://sharepointsite/_api/web/GetAvailableWebTemplates(1033)/getbyname('STS')
   
   Returns the “Team Site” properties

Cheers :)