It looks like Kushner Companies has been making alternative plans to reinvigorate its trophy office tower at 666 Fifth Ave. in case an equity angel doesn’t swoop down with funds for a total redevelopment — something that has been opposed all along by partner Steve Roth of Vornado Realty Trust.

As we first reported, Roth has been an outspoken critic of stripping down a “perfectly good” office building and making it taller and skinnier at a cost of some $7.5 billion — just so it would have more retail at its base, plus a hotel and residential condominiums that may or may not sell.

The idea for the stunning renovation designed by Zaha Hadid Architects was first floated by Jared Kushner, son-in-law of President Trump, at a time when cloud-high condo residences, hotels and retail stores were the core cash generators of Big Apple real estate.

Since then, Hadid passed away — although her firm thrives — while the younger Kushner has gone to the White House in search of Middle East peace.

That left new Kushner CEO Laurent Morali in charge of the extensive portfolio, along with Jared’s dad, Charles Kushner, and other family members.

As to local real estate? The most luxurious of the condos, hotels and retail are in the pits while office space is the Gotham City darling.

A just-distributed 2018 Kushner Companies “look book” also no longer mentions the Hadid tower that was to use the address 660 Fifth.

Instead, it highlights the current 666 Fifth — “noted for its signature aluminum façade, prominent crown signage, and its lobby designed by Isamu Noguchi.”

It also shows the current tower with the illuminated numbers “666” on its crown. These don’t exist, but a new anchor tenant might be able to snare the spot where Citi still has its logo.

In September, an NYC permit was approved through structural engineers Gilsanz, Murray & Steficek that lets the firm swap out all the windows and “over-clad the opaque elements on all four façades” of the white aluminum building at a cost of $17.8 million. The notes indicate it would be another aluminum façade.

Kushner was so serious about this option that when Morali signed the application in July, it paid the required filing fee of $91,812.80 out of the total Department of Buildings fee of $183,625.60.

Other city filings say the current façade is in good shape but five gaskets were loose. Additionally, the parapet wall heights on certain setbacks need to be increased — something that would give the building more use of the tenant-beloved outdoor terraces.

No other filings have been made for cranes or sheds that would indicate any façade work is about to be performed.

Meanwhile, Kushner Cos. is facing the refinancing of its $1.215 billion loan in February 2019 and may need to give up on its wishful redevelopment and instead quickly boost income.

In September, its tenant law firm, Akerman LLP, signed a fourth amendment to its lease and updated its non-disturbance agreement with the lender.

This document is typically signed by larger tenants so they are not tossed if a building is foreclosed, and lays out certain offset rights for funds spent on its installation.

An executive who was not authorized to speak said Kushner is considering many options while a spokeswoman for Kushner declined to comment.