770. Mortgagee's costs reasonably and properly incurred.

(4)     Costs of Proceedings between the Mortgagee and Third Parties

770.     Mortgagee's costs reasonably and properly incurred.

The mortgagee is entitled to add to his security the costs, reasonably and properly incurred, of proceedings between himself and a third party where what is impugned is the title to the estate1. In such a case the mortgagee acts for the benefit of the equity of redemption as much as for that of the security2. However, where a third party impugns the title to the mortgage, or the enforcement or exercise of some right or power