The city has sued, fined and jailed a Bronx landlord, but tenants say they are still living in subpar conditions and have been without cooking gas for 11 months.

Residents of 156 E. 178th St. plan to hold a rally tomorrow urging the city’s Department of Housing Preservation and Development to restore service under the Alternative Enforcement Program, a policy tool designed to coerce landlords into repairing buildings.

The city said the work is already in motion, but getting the building into livable shape has taken years.

In 2015 HPD enrolled the 36-unit property into its enforcement program and sued landlord Arthur Gibbons. A year later the mayor announced Gibbons had been arrested, sentenced to 60 days in jail and ordered to pay $96,525 in civil penalties.

“Unscrupulous landlords are on notice: If you break the law and jeopardize the health and well-being of your tenants, we will use every tool available to enforce the law and hold you accountable,” Mayor Bill de Blasio said at the time.

But tenants say the city has not used all of its tools fast enough and are demanding more action. City officials said they have been working at the property since the gas was shut off last March after a leak and illegal work were discovered.

A plumber hired by Gibbons’ company applied several times for permits to fix the gas but was denied by the Department of Buildings, which said that the permits did not seek to remedy the illegal conditions at the site.

By August HPD decided to send in its own workers to test the building and found that it needed extensive repairs. After suing Gibbons again and giving him a January deadline to make the repairs, HPD opted to pay a contractor itself.

“[The department] has been heavily involved here and has selected a licensed plumber to do the extensive repair work needed in order to have gas service restored for residents, for which the owner will be billed,” a spokesman said.

Once the contractor gets a permit, which in cases of emergency are usually granted within a day of application, work can commence. Gibbons and Jo-Lee Realty Co., the landlord on file, did not comment.