Ahead of the Obama administration's first U.S.-Palestinian-Israeli summit, Israel has agreed to a partial freeze of settlement construction for six to nine months but still wants to build more than 2,500 new housing units, said Israeli officials and an Israeli specialist familiar with the country's evolving policy.

The private Israeli position, which was described by these three individuals on the condition that they not be named, is at odds with the public stance Prime Minister Benjamin Netanyahu has taken before the meeting Tuesday with President Obama and Palestinian leader Mahmoud Abbas in New York. The prime minister's media adviser, Nir Hefetz, told Israeli radio Monday that Mr. Netanyahu would not support a settlement freeze, because he considers the settlements to be a "Zionist enterprise."

The issue of settlements has roiled U.S.-Israel relations. President Obama is demanding that Israel suspend construction on the West Bank and in East Jerusalem as part of a plan to restart negotiations and encourage Arab states to begin the process of recognizing the Jewish state.

What the Israelis are offering is still shy of Mr. Obama's demands. The two Israeli officials and the Israel specialist said Mr. Netanyahu wants to move forward with 2,500 to 3,000 housing units already approved and to exempt East Jerusalem, which the Palestinians foresee as a future capital, from the freeze. The U.S. also sought a yearlong freeze, while Mr. Netanyahu is offering six to nine months, the Israelis said.

Given the gaps, Israeli and American officials have downplayed expectations for the summit at the Waldorf-Astoria hotel and have said they do not expect any agreement to be announced.

Mr. Obama will meet first with Mr. Netanyahu, then with Mr. Abbas and then all three together.

Former Senate Majority Leader George Mitchell, Mr. Obama's envoy on the Arab-Israeli conflict, has been shuttling for months to try to choreograph simultaneous concessions by both sides.

A U.S. official, speaking on the condition that he not be named because the negotiations are continuing, said Mr. Mitchell has received private assurances from some Gulf Arab and North African states to grant over-flight rights to Israeli jets, open interest sections in Israel and end a travel ban against Israelis if Israel freezes settlement construction. Saudi Arabia, guardian of Islam's holiest sites, has not agreed to these steps absent a peace agreement.

"Thus far, the Arabs have stiffed Obama and the Israelis in their own exquisite way are stiffing him," said Aaron David Miller, a former senior Middle East adviser to six U.S. secretaries of state. "He is not getting a comprehensive settlement freeze. In fact, over the next 18 months, it may look like a construction boom; 2,500 to 3,000 new units is a lot of construction and to boot the Israelis will never agree to anything on Jerusalem."