Issue: Duplicate Page Content

[KLLC]

Hello SEO experts,

I'm facing duplicate page content issue on my website. My website is a apartments rental website when client search apartment for availability. Automatic generate same url's. I've already block these url's in robots.txt file but facing same issue. Kindly guide me what can I do.

Here are some example links.

http://availability.website.com/booking.php?id=17&bid=220
http://availability.website.com/booking.php?id=17&bid=242
http://availability.website.com/booking.php?id=18&bid=214
http://availability.website.com/booking.php?id=18&bid=215
http://availability.website.com/booking.php?id=18&bid=256
http://availability.website.com/details.php?id=17&bid=220
http://availability.website.com/details.php?id=17&bid=242
http://availability.website.com/details.php?id=17&pid=220&bid=220
http://availability.website.com/details.php?id=17&pid=242&bid=242
http://availability.website.com/details.php?id=18&bid=214
http://availability.website.com/details.php?id=18&bid=215
http://availability.website.com/details.php?id=18&bid=256
http://availability.website.com/details.php?id=18&pid=214&bid=214
http://availability.website.com/details.php?id=18&pid=215&bid=215
http://availability.website.com/details.php?id=18&pid=256&bid=256
http://availability.website.com/details.php?id=3&bid=340
http://availability.website.com/details.php?id=3&pid=340&bid=340
http://availability.website.com/details.php?id=4&bid=363
http://availability.website.com/details.php?id=4&pid=363&bid=363
http://availability.website.com/details.php?id=6&bid=367
http://availability.website.com/details.php?id=6&pid=367&bid=367
http://availability.website.com/details.php?id=8&bid=168
http://availability.website.com/details.php?id=8&pid=168&bid=168

Thanks and waiting for your response

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[StreamlineMetrics]

I would make sure to use the rel="canonical" tag to designate which URL Google should consider to be the primary URL, regardless of any parameters appended to it. Here is some additional information -

https://support.google.com/webmasters/answer/139394?hl=en

http://googlewebmastercentral.blogspot.com/2013/04/5-common-mistakes-with-relcanonical.html

I would also recommend not using robots.txt in this case.

[CleverPhD]

Agreed - robots.txt is not the way to go on this.  Also,  you can configure parameter handling in GWT to help with this.

[CleverPhD]

You also need to find a way to stop this from happening.  Ounce of prevention!

[KLLC]

Thanks for your response. I've forget to mention one more thing in my question. I've same properties in main and sub domain. Example

Here is one property on main page.

http://www.website.com/the-mayflower/

and now same property on sub domain for availability.

http://availability.website.com/property.php?id=1

Maybe I'm facing duplicate page content and title issue for this reason. Can I block subdomain for search engine crawl?

[Everett]

You should probably set the www.website.com/the-mayflower/ version as the canonical. So the page on the subdomain, and all other copies, would ALL have a rel canonical tag that points to www.website.com/the-mayflower/.

I wouldn't block the subdomain based on what you've said, but complicated issues like this are difficult to fully diganose and prescribe fixes without seeing the site.