How to remove an entire site from Google?

[SeoExpertos]

Hi people,

I have a site with around 2.000 urls indexed in google, and 10 subdomains indexed too, which I want to remove entirely, to set up a new web.

Which is the best way to do it?

Regards!

[DaveSottimano]

  The quickest way to remove an entire site is:    

A: Block everything in robots.txt - add this line into your file:

User-agent: *

Disallow: /

**B:** Set up and verify webmaster tools, then go to your dashboard, select Optimization 

(left menu) > Remove URLs > Create new removal request.

When it asks you to enter a URL, just specify "/" (without quotes to signal the root). 

Note! You'll have to repeat the verification / removal process for all of the subdomains as well

That *should* knock out your site within a few days. 

In the unlikely event that doesn't work, do this:

**A:** Remove the robots.txt block

B: Add the meta robots NOINDEX tag to each page

**C:** Once the pages are completely gone (use site:example.com to check), 

put the robots.txt block back on.

**Question for you:** Why exactly are you doing this? There might be a better 

solution for added SEO benefit if you explain why...

Cheers,

Dave

[SeoExpertos]

Hi DAVID,

Thanks for you fast & complete response!

In reply to your question, this webpage was of another tematic, and we bought the domain, but all the information is different.

To remove the subdomains, I have to create a webmaster account for each subdomain?

I been researching and found that the "No Index" tag, sometimes can take more than a year for google to remove the url from the results, you know if that is true?

Thanks again!

Cheers,

Exequiel

[DaveSottimano]

Hmm, I don't quite understand. If you bought the website, wouldn't you want to take it's authority and redirect it to your primary site?

Re: subdomains > You can use the same WMT account to add and verify the subdomains.

Re: Noindex tag > This all depends on how often Google crawls the site, there is no minimum of maximum amount of time it will take. I'd say that one year is an edge case, and there were other factors at play (i.e. the noindex pages were orphaned).