Raiders owner Mark Davis and his colleagues at the NFL might have to wait a long time to hear from Oakland and Alameda County on a plan to help finance a new $900 million stadium.

That’s because elected officials are in no hurry to help the team close a $400 million funding gap, partly because taxpayers in Oakland and Alameda County are still paying millions of dollars a year for the Coliseum renovations that lured the team back in the mid-1990s. And that debt won’t be paid off until 2026.

“That money we’re paying now is general-fund money we could spend on police, parks or libraries,” said Oakland Mayor Libby Schaaf, who has said she cannot support spending a dime of public funds for a new stadium.

Schaaf was elected last year on promises to bolster the city’s public safety, and her current budget proposal for fiscal 2015-17 emphasizes hiring more police, while mending an $18 million shortfall this year. Oakland eliminated 80 police officer jobs in 2010 during the midst of the recession, and crime surged. The city has been working to build up its police force again.

If Davis was looking for public subsidies to help pay for a new Oakland stadium, he may be out of luck. The Raiders announced plans in February to build a $1.7 billion stadium in Carson (Los Angeles County) along with the San Diego Chargers. But the announcement did little to create a sense of urgency among East Bay civic leaders.

On Wednesday, NFL Commissioner Roger Goodell said the league has received no response from either Oakland or Alameda County about whether they would provide $400 million to keep the team in Oakland.

O.co Coliseum is jointly owned and managed by the city and county, and decisions over the stadium — and whether to build a new one at that location — require a series of approvals from the Oakland City Council and Alameda County Board of Supervisors. The politics can get complicated.

In Alameda County, Supervisor Keith Carson offered this opinion when asked whether he would support public funding for a new Raiders’ stadium: “If my income has gone down, and my housing costs have gone up, it doesn’t make sense for me to go out and buy a new car.” And, he added, it definitely doesn’t make sense to buy a new car “if I’m paying an existing car note.”

If there were some extra revenue in Alameda County, Carson said it could fund desperately needed health care and social services for the county, particularly at a time when hospitals are closing down.

Although many city and county officials are now critical of Mount Davis, the nickname for that costly expansion of the Coliseum, some still hesitate to blame the Raiders.

“I wouldn’t say we got screwed,” said Supervisor Nate Miley, who serves as vice chair of the Oakland-Alameda County Coliseum Authority, the body formed in 1995 to initiate the first Coliseum deal. “I’d say we got out-negotiated. The Raiders were smarter.”

At the time of the last deal, officials hoped that personal-seat licensing — selling rights to buy season tickets — would help recoup the money that went into stadium construction, Miley said. It didn’t work out.

Still, as the Raiders eye a new stadium in Carson, Miley said he’s willing to be flexible. He would consider various forms of public funding, including a direct subsidy, to keep the home team.

Schaaf said she would support using public dollars to improve transportation or upgrade the Coliseum land, but she thinks the stadium itself should be privately financed. Private investors have bankrolled other nearby sports venues, she said, citing AT&T Park and the planned Golden State Warriors arena in San Francisco’s Mission Bay as examples.

She said she’s waiting on Floyd Kephart, the lead financier on the current Coliseum City, to come back with a viable plan. But his proposal is not due until June 21.

In the meantime, the mayor is sticking to her guns.

“We don’t have $400 million lying around,” she said.

Meanwhile, a small group of Raiders fans has lobbied tirelessly to retain the team. And die-hard fans like Andre Mitchell, who said he’s followed the team since the 1970s, say the city should try to keep its football team at all costs.

“We’ve been supporting our team no matter how bad they do,” Mitchell said. “This city goes through so much turmoil, and they’re a bright spot.”

Berkeley resident Jamal Morgain agreed that Oakland had good reason to fight for its team, especially with the Warriors already heading out the door.

“It’s no different from Sacramento” fighting to keep the NBA’s Kings, he said.

But other East Bay residents aren’t jumping up and down to spend another $400 million, which is how much the city and county have already spent on debt service and costs for the mid-’90s Raiders Coliseum deal. Both entities still have to pay an outstanding balance of $80 million in bonds.

Oakland attorney Kim Swain recoiled at the idea. “I think that money would be better spent on infrastructure, education, or almost anything else,” she said.

Christopher Pech, a social worker from Hayward, agreed. “At this moment, the city and county can’t afford to pay $400 million,” he said, adding that the funds could be used for education or social services, instead.

Rachel Swan is a San Francisco Chronicle staff writer. E-mail: rswan@sfchronicle.com Twitter: @rachelswan