Paul Wilmott, 63, died in the explosion at his home in Haxby, near York, on 19 February 2016, which was caused by the fracture of a corroded gas pipe.
One house was "completely missing" and others were left seriously damaged, the inquest in York heard.
Andrew Hewitson said: "It's something I've never seen before."
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The Yorkshire Ambulance Service paramedic told the jury: "My first personal thought was it was a possible plane crash, the way the house had caved in.
"The street was covered with debris, cars were covered with concrete.
"Windows looked to be blown in, all the glass was shattered. Complete devastation."
Michael Jamieson, a watch manager at North Yorkshire Fire and Rescue Service, told the inquest the scene was "almost like an airstrike".
"There was virtually no house left," he said.
"I've been to gas explosions before but I've never seen something with that level of destruction."
Mr Jamieson said he found Mr Wilmott's body underneath rubble at the back of the house, on Springwood.
Mr Wilmott died of multiple fractures of the skull and injuries to the brain consistent with having been sustained in a domestic explosion, the jury heard.
A statement from Mr Wilmott's partner, Olivia Costello, was read out to the jury in which she said the pair had noticed a "very extreme and pungent" smell in the house before the blast.
They thought it was "caused by a dead ants' nest in the wall".
Coroner Rob Turnbull said an inquiry found the copper pipe fractured at a point where two concrete floor slabs met and had moved "possibly as a result of bad weather".
The inquest continues.

The 24-year-old Australian has spent his entire professional career to date at Newcastle, making his debut in 2014.
He has made 44 appearances, five of them coming in 2017.
"His position is one that we identified at the start of the season that we did not have a great deal of depth," said Trinity head coach Chris Chester.
"By bringing in Tyler, it will bring in a genuine competition and add quality to what is already a strong squad."

Ryan Watson was taken to Wishaw General following an incident in Wilson Street on 11 August but later died.
Police have appealed to people in the local community for information.
Det Insp Mark Bell from Police Scotland said: "From the enquiries my team have conducted so far, I am confident that the answer to Ryan's death lies within the local community of Larkhall."
He added: "A young man's life has been taken away needlessly and the family of Ryan deserve to know the truth about what happened to him.
"Ryan had a partner and a young son who will have to continue their lives without him. His mum and dad have lost a son, his brothers and sister have lost a much loved brother.
"I'm making a direct appeal to those within the community, to search their conscience, and contact us with any information they may have because I know somebody knows who did this."
A paramedic called to the scene of a gas blast that left a man dead has told an inquest he thought the devastation was the result of a plane crash.
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