compulsory purchase 
noun [mass noun] British
The officially enforced purchase of privately owned land or property for public use: [as modifier]: the City Council has applied for a compulsory purchase order...
- Ultimately, however, in cases of outright conflict between the company and property owners compulsory purchase was enforced.
- The Council resolution authorised the purchase of affected properties by agreement in advance of any compulsory purchase order.
- The moves will include an agreement to approve road closures where necessary and compulsory purchase orders on land and buildings.