There is a simple way to create your own macro to create a new space - just like the {create-space-button}. You can simply follow the below steps in order to have the ability to create spaces from pages:

1. Go to Browse > Confluence Admin > User Macros
2. Click on Create a User Macro
3. Fill the fields as follows:

• Macro Name: createspace
• Macro Title: createspace

• Template:
  
  

  <a id="create-new-space-link" class="fontSizeDefault" href="/spaces/createspace-start.action">
  <img src="/images/icons/add_space_32.gif" align='absmiddle' height="32" width="32"></a>
  <br />

  4. Click on Save
  5. To test, create a new page and test this new macro you have created by typing {createspace} or selecting it from the Macro Browser.