Try AAindex. It's a database of indices and matrices that describe a large number of physicochemical parameters. Here's the full list of indices and here, for example, Fasman's hydrophobicity index.

EDIT

Your edited question still does not explain, precisely, what you are trying to achieve. However, it sounds as though you want to determine the properties of protein sequences based on those of the constituent amino acids. Basically, this involves writing code to (1) loop through the sequence residue by residue; (2) assign a value to each residue by storing physicochemical properties in some type of data structure (such as a hash in Perl, a dictionary in Python) and (3) calculating some kind of metric for the complete sequence (e.g. a mean, median, value across a sliding window). It's difficult to be more helpful without a clear idea of your goal.