Oakman Inns and Restaurants has secured its ninth outlet in St Albans, Hertfordshire and will invest £800k in refurbishing the site.
The 100-seater site will operate as The Beech House - the same name as a site the group operates in Beaconsfield - and will open in July.
The company raised £5.5m via the Enterprise Investment Scheme and aims to expand to 11 sites by the end of the year, with ten trading by Christmas.