Queens is the new Vegas.

Sure, the lower level of this Forest Hills office building may not look romantic, but it’s where DonnaMarie SanSevero has set up shop with what’s billed as “New York City’s first and only after-hours, walk-in wedding chapel.”

The Reverend D’s matrimonial mantra: “I take the suck out of weddings.”

As the certified officiant tells The Post, “Love doesn’t end when City Hall closes — Instant Elopements offers hours that fit your working, busy New York lifestyle.”

Ceremonies at Instant Elopements, open since the end of May, start at $35 for a 15-minute license-signing-only package with one guest and go up to $100 for a 30-minute, four-guest ceremony complete with favors, a keepsake certificate and celebratory bubbles of the blown variety.

“Elopement does not need to mean nobody knows,” says SanSevero, 48, who also works in production at a Red Hook chocolate factory. Even purist officiants agree, she says: If you have a small ceremony with 10 or fewer people, that qualifies as eloping.

Since opening Instant Elopements, Reverend D has married five couples and renewed one pair’s vows. Most have made appointments, but lovebirds also can wander in during extended business hours — up until 10 p.m. Mondays through Thursdays, 11 p.m. Fridays, midnight Saturdays and 8 p.m. on Sundays — so long as they’ve already acquired the necessary marriage license and have valid IDs.

SanSevero’s speedy marriage venture was inspired by her own wedding experience.

“I was getting married and I could not find an officiant that I liked,” says SanSevero.

She decided to get ordained to marry herself and her partner — only to discover self-unionizing isn’t legal in New York. “I ended up getting a friend of mine to do the ceremony,” she says of her 2010 nuptials.

Despite her no-frills knot-tying business, SanSevero’s own was lavish. “We did a crazy wedding,” she says of the affair, which took place in a now-shuttered Bowery nightclub. “We billed it like a heavy metal tour, had all kinds of cabaret acts, and a ‘Ghostbusters’ wedding cake.”

After reciting her own vows, she began helpings others do the same and estimates that she’s married hundreds of couples since 2011 — but in much more makeshift environs than her new chapel.

“I was meeting people at Starbucks, signing licenses,” she says, as well as “on the E train on the way to work.” She even married people at statues in Central Park and in their homes — but craved a permanent chapel.

“I said, ‘This is terrible, there’s gotta be a better way,’ ” she adds.

‘We don’t need Elvis — this is New York City.’

So she made a pilgrimage to Sin City’s strip for inspiration — and quickly determined that she could simplify the kitschy but complicated world of quickie weddings.

“Everybody thinks you can just walk into any chapel and they marry you right there, at any hour,” she says. “But you still have to go down to their City Hall.”

Her chapel streamlines the process, offering couples not only a quirky officiant but all their wedding needs for rent, including flowers, veils and even emergency rings.

So for locals looking to get a quick hitch, flying to neon-drenched Nevada is no longer necessary. But don’t expect any cheesy celebrity impersonators as part of her package deal.

“We don’t need Elvis — this is New York City,” SanSevero says.