Updated 2015-02-02 I have changed the details about passing multiple filters at the bottom, see the codepex site for full details.
tldr; Download the filter from: https://agilesqlclub.codeplex.com/releases/view/610727 put the dll into the same folder as sqlpackage.exe and add these command line parameters to your deployment:
/p:AdditionalDeploymentContributors=AgileSqlClub.DeploymentFilterContributor /p:AdditionalDeploymentContributorArguments=“SqlPackageFilter=IgnoreSchema(BLAH)”
This will neither deploy, drop or alter anything in the BLAH schema.
More Info I recently discovered deployment contributors which let you write .
