Extension

An increase in the length of time specified in a contract.

A part constituting an addition or enlargement, as in an annex to a building or an extension to a house. Addition to existing facilities.

An allowance of additional time for the payment of debts. An agreement between a debtor and his or her creditors, by which they allow the debtor further time for the payment of liabilities. A creditor's indulgence by giving a debtor further time to pay an existing debt.

The word extension, when used in its proper and usual sense in connection with a lease, means a prolongation of the previous leasehold estate. The distinction between extension and renewal of lease is chiefly that, in the case of renewal, a new lease is requisite, while, in the case of extension, the same lease continues in force during an additional period upon performance of a stipulated act. An option for renewal implies giving a new lease on the same terms as those of an old lease, while an option for extension contemplates a CONTINUANCE of an old lease for a further period.

Request for additional time to file an income tax return beyond the due date.