SAN JOSE — Google’s transit-oriented village could bring more than 25,000 new jobs into downtown San Jose — an eye-popping 65 percent increase in the number of workers in the urban heart of the Bay Area’s largest city, according to a new city-commissioned study.

“There is going to be a lot more of everything for downtown San Jose,” said Scott Knies, executive director of of the San Jose Downtown Association. “More jobs, more housing, more hotel rooms, retail, restaurants, more tax revenue. This report makes that clear.”

The biggest economic benefits would occur if taller buildings can be constructed in that part of downtown San Jose, much of which lies beneath the flight paths of jetliners using the city’s international airport, the according to the report circulated by San Jose’s Economic Development Department.

The potential job impacts and the additional office spaces are nothing less than dramatic. The most recent comprehensive estimate, compiled in 2014 by non-profit group SPUR, stated that downtown San Jose has roughly 39,000 jobs. If the Google village project brings 25,400 jobs to the city’s central core, that would be an increase of about 65 percent in the number of jobs in downtown San Jose.

The newest estimates are well above the original projections from 2017 of 15,000 to 20,000 jobs to come with the project.

“What’s really mind-boggling is how small downtown San Jose is, how few jobs there are downtown,” said Mark Ritchie, president of Ritchie Commercial, a San Jose-based real estate firm. “Adding in Google is going to make a huge difference. This is why raising the height limits is so important. It’s like creating more real estate downtown.”

The city has voluntarily limited the heights of buildings so they won’t go above what federal officials allow. But with an easing of height limits, buildings in the Diridon Station and SAP Center area could be 200 feet high, much taller than the current highest building in the area, the 110-foot-tall SAP Center.

Downtown San Jose now has about 10 million square feet of office space, according to commercial realty experts. Under a scenario of taller buildings, the Google transit-oriented village, the city report said, would add 8.5 million square feet of prime office space — which would be a roughly 85 percent increase in the square footage downtown.

“This report validates that with this development, we are about to create downtown San Jose 2.0,” said Bob Staedler, principal executive with San Jose-based Silicon Valley Synergy, a land use consultancy. “The number of office workers, the daytime population, the retail and the restaurants, that is all going to change.”

With taller buildings as part of the Google transit-oriented community, potentially 9,350 homes, with 13,700 residents, would be built near the Diridon train station, which is expected to be a vital transit hub for regional, statewide and coast-to-coast travel.

“It’s possible that 50 percent of the people who would work in the Google village would be within walking distance of their jobs,” said Nick Goddard, a senior vice president with Colliers International, a commercial realty brokerage. “The more people we can keep in a live, work, play area that is next to a major transit hub, all those people can be kept off the roads.”

The report also indicated that new hotel rooms, as well as retail outlets such as shops and restaurants, could become part of the project.

The report, which was prepared by Walnut Creek-based Applied Development Economics, was issued ahead of a crucial San Jose City Council vote Dec. 4 at which the city will decide whether to sell Google an array of government and city-owned properties viewed as essential for the transit village. Google also provided information for the study.

The parcels in the 47 acres anticipated for the development, including properties that Mountain View-based Google has already bought and government-owned sites that will be sold to Google, have a combined assessed value of $131.8 million.

The study said that with taller building heights, the assessed value, upon completion, of the Google village could be $9.4 billion, including the offices, homes, retail, and hotels.

“We are inching closer to a 24-hour downtown in San Jose,” Staedler said.