A proposed new federal seat in Western Australia is to be named Burt and include suburbs in the south-east of Perth.

Draft federal electoral boundaries have been released for the state after it secured an additional seat in the House of Representatives, taking its total to 16.

The new seat will centre on the suburbs of Armadale and Gosnells and take in voters from the seats of Canning, Hasluck, Swan and Tagney.

The federal redistribution commissioners said they chose the name Burt to honour succeeding generations of the Burt family for their significant contributions to the justice system.

However the name was recently also picked by WA's electoral redistribution commissioners as the proposed new name for the existing state seat of Alfred Cove.

Sir Archibald Burt (1810-79) was the first chief justice of WA's Supreme Court, Septimus Burt (1847-1919) was WA attorney-general and Sir Francis Burt (1918-2004) was chief justice of WA and the state's governor.

The shakeup will not impact the upcoming federal by-election in the seat of Canning, slated for September 19.

ABC election analyst Antony Green said the new seat was notionally Liberal with a margin of 5.2 per cent.

Based on the 2013 election result the Liberal Party would win 13 out of the 16 seats under the proposed boundary changes.

But the party will face a tougher fight in the seat of Cowan as its margin has been slashed from 7.5 per cent to 4 per cent.

The margin in Perth, held by Labor's Alannah MacTiernan, has been cut from 4.4 per cent to 2.8 per cent.

Objections to the redistribution can be lodged prior to September 18.