In one sentence, describe what the following article is about:

Many basic identification documents, such as state-issued driver's licenses, include the address of your primary residence. The address of the house on official identification is strong evidence that you live there.  While having the address on your driver's license doesn't necessarily prove that you own the house, it can help to prove that you live there. Particularly if you were the victim of a natural disaster, you may have to prove both ownership and occupancy to be eligible for some types of aid. If you purchased appliances or other supplies used in the house, the sales agreement may include the address of the house. Any other legal document that includes your residence would also have the address of the house.   Court documents require your address, in part to establish that the court has jurisdiction. Other legal forms or applications may also include your address. If you've lost your copies of these documents, you may be able to get new copies at the courthouse, or by contacting the store or other person involved in the transaction. Bills for water or electricity in your name are strong evidence that you live in the house. If you've lost copies of past utility bills, contact the utility company and ask for an account history or transaction record.   Since virtually anyone can start utilities at a house, utility bills are never proof of ownership. However, they are solid evidence that you live in the house. If the utilities are not in your name, you may still be able to prove occupancy if you can demonstrate your relationship to the person who turned on the utilities. For example, if your mother turned on the utilities, that relationship would typically be sufficient. It's generally accepted that you live at an address if you gave that address out to businesses or organizations to communicate with you. Any sort of bills or statements with your name and address are sufficient. Mail provides better evidence if it is generated in the course of business, such as a credit card statement or a delivery notice. Anything that says "or current resident" (or similar) under your name won't work to establish occupancy. If all else fails, you can swear out an affidavit stating that you occupy the house in question. While you do sign the statement under penalty of perjury, this is considered the weakest form of proof and may not be accepted by some relief organizations or government agencies. Whenever possible, have other documents to support your declarative statement. Even if a document isn't enough to prove occupancy by itself, it may gain strength when combined with other documents.

Summary:
Gather identification documents. Get copies of sales agreements or other legal documents. Show utility bills in your name. Find official mail sent to you at the house's address. Submit a declarative statement.