The state opposition leader said he will reveal his own position in the coming weeks, with a national referendum expected to be held around October.
"I haven't made a decision," Mr Speakman told reporters.
"I've been meeting with heaps of parties for and against, and consulting with local groups in and around my electorate and I'll have something more to say in a few weeks."
On Saturday, Mr Speakman attended the first major meeting of state party members since losing the March election, telling over 500 attendees at the NSW Liberal council in Sydney, the party aims to attract younger voters and reclaim government in 2027.
"It is a challenge for our party to attract younger voters, and that's exactly what I intend to do," Mr Speakman said.
The Liberals currently have six MPs under the age of 35, while Labor has none, which Mr Speakman said should give his cohort an advantage.
"We want to be listening, engaging with young people to get their ideas to make sure that we're responsive to their concerns," he said.
The NSW opposition will put cost of living pressures high on its agenda as it seeks to hold the government accountable, with Mr Speakman slamming a decision to scrap the First Home Buyer Choice from 1 July.
The policy, introduced by the previous NSW government last year, gives first home buyers of properties up to $1.5 million the option to pay an annual property tax instead of transfer duty.
The government is instead offering no stamp duty on first home purchases of up to $800, 000.
"This is a kick in the guts for first time buyers," Mr Speakman said.
"Two thirds of eligible buyers chose our property tax option. So we know what's in the interest of first time buyers, we know what they will choose, and the government is now stripping them of that choice."
NSW Treasurer Daniel Mookhey said from next week the government's new first home buyers scheme will be much fairer, with expanded concessions for purchases up to $1 million.
"That will be a watershed mark that many more first home buyers in NSW can look forward to," Mr Mookhey said.
Deputy leader of the federal Liberals, Sussan Ley also attended Saturday's meeting and was applauded for her party's unified opposition to the Voice.
"It's a bad proposal. It will not deliver better outcomes for Indigenous Australians, but it will deliver worse outcomes for all Australians," Ms Ley said.
Mr Speakman said state Liberal MPs will be free to vote on the Voice how they choose and shouldn't feel pressured by the federal party's firm opposition.
Also on the agenda at the meeting was the election of a state party president, with voting open to members for the next ten days.
Former federal member for Mackellar, Jason Falinski is the clear favourite in the race, having been turfed from Canberra in a teal wave.
Mr Falinski declined to comment on his candidacy for the presidency, which is not permitted under party rules.
