polymer build
command output the result to the build directory.
Is there any way to change the output path?
/* Output directory example */
./build/
├── es5-bundled
├── es6-bundled
├── es6-unbundled
└── polymer.json
You can change the names of the subfolders within build folder to any name you like. Just change the name property in builds array of your polymer.json file. See the documentation for this.