Development that improves rather than undermines people's quality of life.
The group has written to every one of its members in the proposed South East Growth Areas urging them to write to their MPs to raise concerns about the potential impact of the housing estates.
Ms Stainton said the CPRE strongly supported John Prescott's desire for a
"step-change" in the quality of new development.
But improvements would not come easily, she warned.
Mr Prescott's multi-million pound package aimed at speeding up plans for thousands of
new low-cost homes nationwide was unveiled in February.
Investment
Under the scheme, the government will invest £5bn in affordable housing over the next three years, including at least £1bn on housing for key workers such as nurses and teachers.
The plan insists housing estates must be designed so that public transport links are close by and there is less need for private car use.
When Mr Prescott announced the plan he also made a pledge to focus development on brownfield land and to "maintain or increase" greenbelt land in every English region, by creating new green spaces in towns and cities.
He said the four "growth" areas, together with London, had the potential to deliver 300,000 more jobs and an extra 200,000 homes over the next 15-20 years.