Dilapidated

1. verb

   bring into a condition of decay or partial ruin by neglect or misuse

   Similar: dilapidate

2. verb

   fall into decay or ruin

   “The unoccupied house started to decay”

   Similar: decay, crumble, dilapidate

3. adjective

   in deplorable condition

   “a street of bedraggled tenements”

   Similar: bedraggled, derelict, ramshackle, tatterdemalion