SAN JOSE — Developers have proposed a transit village near the Berryessa BART Station in San Jose that would transform a local flea market into a mega-hub for jobs and high-density housing with millions of square feet of offices and thousands of residential units.

According to a proposal filed Tuesday with city officials, more than 3 million square feet of offices and over 3,600 residential units, as well as some retail, would rise on the south side of Berryessa Road near Sierra Road, on the site of the existing flea market next to the future BART station in San Jose’s Berryessa district.

“We are significantly increasing the jobs and housing capacity on our property at the BART Station,” said Erik Schoennauer, a land use and planning consultant who is working on the project for the site’s property owner, San Jose’s Bumb family.

Prior to Tuesday’s revamped filing for the Market Park project, the plan had envisioned up to 1.5 million square feet of offices with ground-floor retail, and about 1,800 residential units. The newest proposal calls for up to 3.4 million square feet of offices and 3,650 high-density housing units.

“The city of San Jose wants a very intensified development adjacent to the BART station,” said Ralph Borelli, chairman of realty firm Borelli Investment, which is spearheading the project.

The newly filed proposals mean the office complexes in the project, at full capacity, could accommodate 17,000 office workers. That size of a workforce would be in the range of the 15,000 to 20,000 employees that Google calculates could work at a transit-oriented community of offices, homes, shops, restaurants and open spaces near downtown San Jose’s Diridon train station.

“The Berryessa BART station area would become a major hub for jobs,” Schoennauer said.

However, a key twist has emerged with this proposal. The developers are pushing for construction of a new freeway interchange at U.S. 101 and Mabury Road, which would allow for an easy flow of traffic to and from the development.

The total cost of the interchange would be $100 million, or even somewhat more. The developers have already paid $13 million in traffic mitigation fees, and they intend to plunk down another $8 million, for a total commitment of $21 million. They hope the city of San Jose, Santa Clara Valley Transportation Authority, Caltrans and federal agencies will cough up more cash.

“We need the interchange to be built to have a viable office market,” Borelli said.

Potentially, the big office buildings could be a major draw for tech companies such as Google, Apple, Facebook and Amazon.

Through a combination of office leases and property purchases, these tech titans have dramatically widened their respective footprints in Silicon Valley and nearby regions such as Fremont, the Peninsula and San Francisco.

The Berryessa BART Station is about an hour’s ride from downtown San Francisco and is even closer to downtown Oakland, so it could speed San Jose residents to other Bay Area job hubs, or bring people into San Jose for work from the East Bay or San Francisco.

“The office buildings would make Market Park one of the largest employment centers ever proposed in the city of San Jose,” Schoennauer said.