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The Landlord Tenant Act (68 P.S. §§ 250.101-250.602) puts no duty on a non-breaching landlord to mitigate damages where the tenant has abandoned the property in breach of the lease.
I had a tough time finding information on that case. I did find this:
"In any event, the landlord need not attempt to mitigate his damages by affirmatively attempting to re-rent the property following the forfeiture. See Stonehedge Square Limited Partnership v. Movie Merchants, Inc., 685 A.2d 1019, 454 Pa.Super. 468, appeal allowed in part, 696 A.2d 805, 548 Pa. 228, affirmed, 715 A.2d 1082, 552 Pa. 412 (1998)."
This information did not distinguish between residential and commercial landlords regarding the duty to mitigate. I found this information at: http://www.rhoads-sinon.com/archives/Nehilla01.aspx
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