The City Council voted itself a 25% pay raise yesterday over the objections of several members, including one renegade lawmaker who took the rare step of introducing an amendment on the floor of the City Hall council chamber.

The action boosts the council members’ salary by $22,500 annually, to $112,500, and it also gives raises to the borough presidents, the district attorneys, the public advocate, the comptroller, and the mayor. The increase will take effect immediately after Mayor Bloomberg signs the bill into law, as he has pledged to do.

The city’s elected officials had not had a raise in seven years, and the council vote, which passed 41-5, followed recommendations issued last month by a mayoral commission.

The loudest voice of dissent came from Council Member Tony Avella of Queens, a frequent opponent of the council leadership who has already declared himself a candidate for mayor in 2009. Mr. Avella sought to amend the bill on the floor, a move so unusual that it sent council aides scurrying to find the last time it had happened. (They were unsuccessful.)

His amendment would have delayed the salary increase until after the council’s current term ends, in 2009. “I firmly believe it is unethical for this body to vote itself a raise,” Mr. Avella told his colleagues during yesterday’s meeting.

The proposal also would have eliminated the hefty stipends, or “lulus,” given for committee chairmanships and leadership positions, and it sought to prohibit lawmakers from receiving outside income by changing the position of council member to a full-time job, rather than its current part-time status. The council had not addressed either issue, which were raised by the mayoral commission and are sources of criticism by some civic groups.

The council speaker, Christine Quinn, has defended the stipend system and the ability of lawmakers to collect outside income.

With permission from Ms. Quinn, Mr. Avella also introduced his amendment at a Governmental Operations Committee hearing earlier in the day, even though he is not a member of the committee.

While allowing Mr. Avella to make his case to the council, Ms. Quinn, who lobbied for the raises, denounced his amendment on the floor. “There is nothing unethical about the vote we are taking today,” she said, adding, “This amendment is not necessary.”

In a sign of how rare Mr. Avella’s amendment was, aides to the speaker rushed to silence Council Member Alan Gerson after Public Advocate Betsy Gotbaum, presiding over the meeting, allowed him to explain his vote against it. Such speeches, Ms. Gotbaum was told, were permitted only for votes on bills, not on their amendments.

Only one other council member, Darlene Mealy of Brooklyn, supported Mr. Avella’s proposal.

Ms. Mealy, Mr. Avella, and three other members voted against the pay raise bill. All five, it appeared, had separate reasons for doing so. Council Member Andrew Lanza of Staten Island, one of three Republicans on the body, said he opposed a raise for the public advocate, a position with little official power that he said should be abolished. The public advocate stands to make $165,000 a year, a raise of 10%. Mr. Lanza will not receive most of his raise at the council — he won election to the state Senate last week.

Council Member Hiram Monserrate of Queens also voted against the increase, saying afterward that “there should never be a process where we vote our own raises.”

A council member of Staten Island, Michael McMahon, had little explanation for his opposition vote.”It was simply the right vote for me,” he said.

For those lawmakers who rejected the salary boost, political observers said the vote could serve as a plank in a reform or fiscally conservative platform in future campaigns for higher office. But they also run the risk of alienating their colleagues, and the speaker.

Lawmakers who voted against the raise may also be more popular with their constituents. A Quinnipiac University poll released yesterday found city voters opposed to salary increases for elected officials by a 2-to-1 margin. Voters also opposed extending term limits, the poll showed.