Previously only available for German customers, the new Roombook Extension with International and German standards has been made available for Subscription customers on the Subscription Center.
The description from Subs Center:
"The Roombook Extension helps calculate the surface area of walls, floors and ceiling elements, room circumferences and the total number of furnishing elements within a project.
In addition to the automated detection of room areas and surfaces, this extension helps users configure these elements manually to local requirements, as well as achieve more accurate model take-offs. Quantified results can be exported to Microsoft® Excel® software and Autodesk® Quantity Takeoff (QTO) software."
In essence this extension allows you to quantify materials beyond what is possible in the core Revit product, for example applying height reductions for specific materials and manually applying materials to sub-areas.
If you are a Revit Architecture Subscription Customer you can download now from:

One small problem: The Room book Extension is not on the Subscription Center. :-(
Posted by: Vj Dx | Monday, 13 December 2010 at 11:54 PM
Is it possible for customer, which is not in German to get this Extension, I really need this.
Posted by: 志洵 溫 | Tuesday, 14 December 2010 at 03:51 AM
It is available as an International version, however it appears not all countries can access it from Subscription Center and I am trying to find out why.
Posted by: Simon Gillis | Tuesday, 14 December 2010 at 04:06 PM
It looks as if the extension has only been made available to a few countries at present, I am trying to find out why.
Posted by: Simon Gillis | Tuesday, 14 December 2010 at 04:07 PM
I believe it is limited to an "international" group of European countries at the moment because of it's original focus on the spedific needs of the German market. They may be able to expand it further but no timeline for it yet.
Posted by: Steve Stafford | Tuesday, 14 December 2010 at 04:42 PM
Now that, I download the .exe file and install but "Error 1324. The path Gaumbuch f? Revit 2011 contains an invalid charater."
How do I??
I think that "very useful extensions"
-Nam-Ha Kwon in Korea-
Posted by: Nam-Ha Kwon | Wednesday, 15 December 2010 at 02:55 AM
Its available in Australia - either the European Union has just been extended, or maybe its just not available for those on imperial units ie. You Steve (US) ;)
Posted by: Tim Waldock | Wednesday, 15 December 2010 at 07:10 AM
Hi Nam.
Not sure why you are getting that error, best thing to do is to log it with Subscription Support and get them to take a look at it.
Cheers,
Simon
Posted by: Simon Gillis | Wednesday, 15 December 2010 at 09:08 AM
I change my country into US, and language to English. So I get the file now.
Posted by: 志洵 溫 | Friday, 17 December 2010 at 09:09 AM
is this no longer available for Revit 2012?
Posted by: SL | Thursday, 28 April 2011 at 12:34 AM
Hi SL,
At the moment it is not available for 2012, I am not currently aware when/if it will be.
Posted by: Simon Gillis | Thursday, 05 May 2011 at 09:55 AM
The extension freezes when trying to calculate room QT. Any advice?
Posted by: Frank | Tuesday, 28 February 2012 at 07:51 PM
Hi Frank,
Not heard of that. Best thing to do is log it with Subscription Support so it can be investigated.
Thanks,
Simon
Posted by: Simon Gillis | Friday, 02 March 2012 at 04:01 PM