The deadline for owners of large commercial properties in Boston to submit energy and water data to the city has been pushed back until Sept. 15.

The City Council approved the 120-day extension and Mayor Martin Walsh signed the amendment on Wednesday, the eve of the original deadline.  Business and real estate groups had sought the extension, saying they didn’t have enough time to comply without facing penalties of up to $200 a day up to a maximum of $3,000 a year for failing to submit reports.

Enacted in 2013 to reduce greenhouse emissions, the Building Energy Reporting and Disclosure Ordinance (BERDO) applies to an estimated 1,050 commercial buildings that are more than 50,000 square feet, or multiple buildings on a single lot exceeding 100,000 square feet.

Business groups including the Greater Boston Real Estate Board argued that the city’s outreach, which began in late January, was too late for many landlords to comply. The ordinance requires data on energy and water usage for individual buildings to be submitted to an online database.

In a statement, Walsh called the extension "a sensible measure" that gives building owners flexibility.

"While today’s ordinance provides reasonable accommodations to our industry partners to better phase-in implementation, we do expect to see a high rate of compliance in the first year," Walsh said.

The ordinance broadens the reporting requirements through 2017, when owners of all commercial buildings over 35,000 square feet and multifamily buildings with 35 or more units would be required to submit reports.

Email: sadams@thewarrengroup.com