The first phase is the regeneration delivery plan for three strategic sites in Gainsborough town centre that the council owns.
Second and third phases involve house-building and wider economic development.
Details of sites where 4,350 new homes will be built and 19 hectares of commercial land for growing businesses were outlined in a development prospectus published earlier in the year.
The procurement documents are available at: http://www.delta-esourcing.com/tenders/UK-UK-Gainsborough:-Building-construction-work./PWHKH8KMAS
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