Originally priced at £17 million, Bradford Council will now be bidding for £24.5 million in Lottery cash to deliver the landscape architects' new designs and transform the city-centre site.
Councillor Andrew Mallison said: 'Bradford has increased its bid for lottery funding to £24.5 million for its City Park as widespread improvements are made to the scheme to create a stunning centrepiece for the city.'
The changes incorporated the ideas and opinions of nearly 3,000 people who took part in an extensive consultation, and will now see more greenery and trees in the park, and the inclusion of a new visitor centre and café.
Gillespies associate partner Tom Walker said: 'We've listened to the wishes of the people of Bradford accordingly. It's an even better design and hence the increased bid for Lottery funding.'
The scheme is one of the finalists in the Big Lottery's Living Landmark's scheme, which will grant £10-25 million to various public projects around the country. The winners will be announced in September.