Long Island bureaucrats told a woman to put her wheelchair-bound relatives in the basement, as they rejected her planned home expansion to accommodate them.

“We’re at a loss,” said Debra Buffa, 50, caregiver for her severely ill parents and younger brother JP — who has been in a persistent vegetative state for more than 25 years.

Buffa and her husband, Eric, moved their three kids to a 6,000-square-foot Lake Grove home in 2017, with plans to expand it to accommodate JP, who suffered a stroke at age 13.

The six-bedroom home, with vaulted ceilings and an open floor plan, was in foreclosure. The first-floor master suite was ideal for JP, 39, who needs a temperature-controlled environment, Debra said.

But within eight months of the move, the health of Buffa’s 75-year-old parents entered a dizzying decline, with mom Paula fracturing her shoulder and dad James diagnosed with colon cancer.

“I needed to be in two places at once,” Buffa said of her ailing mother and brother in Coram and her father in the hospital.

She moved them to her house — where her mom, who can’t navigate stairs to the second floor, sleeps in the dining room; her wheelchair-bound father sleeps in an office; and JP is stuck in his room, unable to venture out.

They began building an 800-square-foot, one-story addition for the trio in October 2018, but were quickly slapped with a stop-work order. The Village of Lake Grove ultimately rejected the project as too large.

Zoning Board chairman Robert Gaudioso chastised the family for building without a permit, for which they paid a $550 fine, suggesting they put Paula, James and JP in the basement or garage, or renovate the home’s interior.

Those options were unsafe or prohibitively expensive, said Buffa, who is now suing the Village in Brooklyn Federal Court for discrimination, seeking unspecified damages.

“They’re treating us like criminals,” she said. “I wasn’t building a mancave. … let me take care of my family.”

Her attorney, Doreen Shindel, said, “The Buffas were punished because they dared to initiate construction prior to receiving the approval of the … board members, and to hell with making exceptions for the disabled.”

The three family members remained crammed on the first floor. “It’s heartbreaking,” Buffa said.