I often get asked about a sensory check list for parents. I like the Sensory Processing Disorder Checklist from SPD Foundation because it looks at function, covers all ages and looks at modulation. Another list I like a lot is the Sense and Self-Regulation Checklist by Dr. Louise Silva. It was published in the Jan/Feb 2012 issue of AJOT, and is also available Dr. Silva's web site.
The gold standard for sensory questionnaires is the Sensory Profile with the Sensory Processing Measure being very good, as well. Both of these are standardized on large populations and available commercially from Pearson's and WPSpublishing respectively.
How about assessments? There is the SIPT, but it does not cover modulation. I am waiting for the Sensory Scales from SPD Foundation to be completed. They have standardized the SOR (sensory over responsivity) section on a few hundred children across the US, but have much work to do on the rest of the tool. By the way, the SOR section is being actively used by researchers.