A modular addition for a Sandy-damaged home in Long Beach slid as it was being lifted by a crane Friday and knocked down a neighbor's white picket fence, city officials said.

Only a corner of the addition hit the curb, but to the consternation of modular home builder Robert Krieger, some locals watching on Pennsylvania Avenue burst out with "Oh look, they dropped the house."

"It slid eight inches off the trailer," said Krieger, a principal of Long Beach-based Hewlett Partners. "Nobody dropped the house."

The mishap was caused by a "mechanical" error -- an 8-inch slack in the cable, he said.

Part of the Sheetrock in the corner cracked, but there was no structural damage, Krieger said, and the addition, the last of four rigged up, was eventually lowered into place as part of the second floor.

"Everything is together as if it didn't happen," said Krieger, a custom builder and partner in the company, formed by three men after Sandy to help residents move into new homes quicker.

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A six-foot part of a vinyl fence was knocked down, but the business will replace that within a few days, he said.

No one was hurt in the mishap, which occurred shortly after noon, Long Beach police and city officials said.

Inspectors from the city building department and the federal Occupational Safety and Health Administration went to the scene but did not issue any citations, said Scott Kemins, the Long Beach building commissioner.

Police said all the contractors were fully licensed and insured.

Kemins said Hewlett Partners has been the biggest modular home builders on Long Beach and that this was the first incident: "It was an unfortunate accident."