Section 27. Variation of programme by Board after it has been sanctioned

The Bd'ard rhay,:at any time, vary any programme or any part thereoFsanctioned
by the'[Administrator] ;..
Provided that no such variation shall be made if it involves anexpenditure in
excess often per centum of the amount as originally sanctioned for the execution
ofany housing scheme included in such programme or affects its scope or pur
pose.