Can i break my 1 year lease if.....?

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i moved into my duplex two months ago and gave two months rent upfront and the 400 dollar deposit....the place is old but i wasnt aware of some things until i moved in. there was a crazy beetle/roach thing goin on. and my landlord eventually sent pest pple but they took awhile and i was really unhappy, there are a lot of little things wrong too... 1. my bathtub constantly drips water 2. my gas stove doesnt have an appropriate plug and i have to use an extension cord across my sink to use it (not safe) 3. the wondows are so old that there are a lot of drafts in them. at first only half the windows had storm windows, and i thought that was the problem, he put storm windows in them all, but it was still bad. everyday my windows are soaked in water condensation, and i mean SOAKED, its weird...using my heat is useless, and becoming expensive, but its realllly cold 4. arent bathroom doors supposed to have locks? 5. he kinda uses my basement as storage for himself, i have a washer and dryer to put down there and he just moved his horribly old and rusted, wuldnt touch them if my life depended on it, washer and dryer to the side. its a small basement since its a duplex... do i have the means to break my lease and recollect my deposit? how do i do it legally? whats the process? and my mom said something about the housing authority? clal them and see there take on the situation? help please thank you -Calli