“Absolutely gutted,” added Emilie Mules, a self-described half-Aussie, half-English theater lover.

Producers said that previews of the show, with book and lyrics by Lin-Manuel Miranda, will now begin on Dec. 6, at the Victoria Palace theater, which has been undergoing a multimillion refurbishment. The official opening will now take place on Dec. 21.

The London show’s co-producer Cameron Mackintosh apologized for the delay, caused by, among other things, he said, the difficulty of renovating a theater built over huge King’s Scholars’ Pond Sewer, an active 200-year-old brick tunnel.

“It has been an extraordinary undertaking, both thrilling and fraught,” said Mr. Mackintosh, who owns the theater, referring to “the complexity of putting what is practically a brand-new building into the shell of a much-loved historical masterpiece.”

Those who had tickets for canceled shows were to be contacted by the end of the day on Friday to arrange new seats, the production said. Tickets for the show are sold out until June 2018, though a large number of seats were being held in reserve. The reissued tickets are expected to be allocated from this cache.

This may not appease ticket holders.

“Please know that there are people all around the world flying to London to see the show and got things booked months ago,” Ada Ning, a Chinese doctoral student studying pharmaceutical sciences in Kyoto, Japan, wrote on Twitter. In a phone interview, she said she knew the lyrics of every song on the “Hamilton” soundtrack — including her favorite song, “My Shot,” which she sometimes sang while cleaning her home. She was so upset that she was considering canceling her trip to London altogether. “I had hoped to meet Lin-Manuel Miranda on the red carpet at the premiere,” she said.