Debris is strewn across gardens after a man trying to make cannabis oil caused a huge explosion.
Fire ripped through a block of flats with one neighbour leaping 12ft on to a trampoline to escape.
James Toogood, 36, used butane gas to manufacture oil at the Bristol property, with dozens of canisters found at the scene.
He had admitted production of a class B drug at Bristol crown court.
Laura Hawkins, 39, was found guilty of permitting the production of a class B drug at her flat and was jailed for 15 months.
DC Lee Townsend, of Avon and Somerset Constabulary, said: “James Toogood’s reckless actions put not only his life, but innocent neighbours’ lives at risk.
“It is only through luck that his dangerous activities did not cause a fatality.
“A substantial amount of damage was done to the property in Whitchurch Lane and the shocking photographs in the immediate aftermath are a testament of how serious an incident this was.
“I am pleased that the seriousness of this offence has been reflected in the sentence handed out to him.”