“Let’s make clear, this is just a part of my life,” Mayor Bill de Blasio hot-aired Monday when asked how he justifies his daily 11-mile SUV cavalcade to the gym, even as he’s combating climate change.

Never mind that “this is just a part of my life” is what the victims of his policies would protest, too.

Or that the mayor’s most extreme move — seeking “to ban the classic glass and steel skyscrapers which are incredibly inefficient” — is upping an already-lunatic mandate passed by the City Council last week.

The Green Buildings bill spearheaded by Councilman Costas Constantinides (D-Queens) would force massive and costly refits on thousands of large and medium buildings (over 25,000 square feet) to cut emissions 40% by 2030 and 80% by 2050. Owners face stiff fines if they can’t hit the city’s energy-efficiency targets in 10 years.

For condo and co-op buildings, the fines could run over $1,000 a year for every unit owner. (So much for affordable housing.)

And this is after many of those same New Yorkers already paid hefty assessments to switch their buildings from oil to gas heat, a shift that accounts for a huge part of the city’s actual reduction in carbon emissions.

De Blasio frames it as an assault on the rich, singling out the Hudson Yards towers as the kind of menace he means to stop. But he’s imposing costs of $4 billion or more on about half the city’s existing buildings. Yet publicly owned buildings are exempt, and rent-stabilized ones face easier requirements.

The retrofit mandate is the biggest single piece of de Blasio’s plan to cut emissions by 40% by 2030. (By the way: 12 points of that 40% drop comes from what Mayor Mike Bloomberg already did.) And it’s going to hit the middle class — and the overall housing market — hard.

Regular New Yorkers will pay, and the plan’s failure won’t be obvious until years after de Blasio leaves office in 2021. Meantime, he’ll make his green “achievements” a central part of his ridiculous White House run.