The firm currently works solely with Killa Communications, one of the agencies under assessment.
Habitat UK PR manager Victoria Eden said: 'We are yet to decide budgets [of future PR spend].'
The move comes as Habitat gears up for the launch of a store on London's Regent Street. The flagship outlet, slated to open its doors in mid-April, will become the chain's 42nd UK store.
The opening will be handled by Killa, which is also promoting Habitat's sponsorship of the Victoria & Albert Museum's Modernism exhibition.
The retailer is supporting the museum's spring show and will display its own modernist-inspired products, including lamps and chairs.
Eden joined Habitat 11 months ago and reports to head of marketing Jo Mathews. She was previously an account director at Hill & Knowlton, where she worked for seven years.
Shortlisted agencies are likely to pitch during March and April.
PR is the first marcoms discipline that Habitat has targeted in its review.
Killa has previously handled work such as the launch of the retailer's celebrity-designed 'VIP' range.