Micro-site templates was one of our responsive projects we were requested by product to create. Product wanted a template that can be duplicated and styled very quickly for a new micro-site.
We made use of twitter bootstrap as the frame and added our own custom styling. We made use of SASS which helped speed up the process. We created variables for certain css value that we needed to change all the time for new micro-sites.
The first master build took us about 2 weeks to complete, this includes front-end and back-end development. All future micro-sites onward took us no longer that 2 days which included QA.
This was a very exciting project as we could use new technology (SASS) which saved us a lot of time.
I was involved with the front-end coding of the master template, the development team consisted of 5 back end developers and one front-end developer and one designer.