Cost-Cutting Kitchen Remodeling Ideas. There's a new breed of homeowners redefining the way homes are built: creative individuals who thrive on the challenge of finding inexpensive materials and using them in innovative ways.
1 To freeze butter, wrap tightly in heavy-duty aluminum foil or plastic freezer wrap, or place inside a heavy-duty freezer bag. Frozen  salted butter will generally keep longer (up to 9 months for best quality) than unsalted butter (5-6 months for best quality).
Most sources I've read state that you can keep salted butter frozen for up to 9 months and unsalted butter for up to 6 months. Be aware that butter will pick up odors from surrounding food in the freezer and you might like to add some additional wrapping such as foil or put it in a sealable bag.