CABE has urged EPR Architects to clarify the key aims behind its plan for a new civic quarter in Maidenhead.
CABE's design review committee said that for the project to realise its aim to strengthen the existing urban grain and give the town a new heart, a number of questions had yet to be answered.
The scheme, part of a seven-year programme to revitalise Maidenhead town centre, creates a new town hall set in a public square with housing, a community and arts venue, retail space, restaurants and cafes.
The site of the proposed new civic quarter lies between Park Street, St Ives Road and York Road.
CABE congratulated the council on the high level of aspirations for the site, but said that the key aspects and principles needed to be established before taking the project forward. It called for a greater 'flexibility' in the designs for the new public square and town hall, and for an urban designer to be engaged for the next stage of design development.