Plans for housing, which could see the number of homes in an Oxfordshire town double in the next 20 years, are to go before councillors.
Councillors will decide whether to accept the plans next week
The proposals involve building about 3,000 new properties on agricultural land outside Didcot.
These would be in addition to 3,400 others approved for the area as part of the Great Western Park development.
District councillors will decide whether to give the latest plans the go-ahead at a meeting next week.
Councillor Jerry Patterson, of Vale of White Horse District Council, told BBC News: "We're talking probably about Didcot doubling in size over the course of the next 20 or 30 years.
"That's already happened in Oxfordshire over the course of the last generation in places like Abingdon and Bicester.
"Development has to go somewhere. We feel Didcot is the most sustainable place in the southern part of the county."