Subject to subsection (2) below, a local housing authority may by resolution—
and as soon as may be after passing such a resolution the authority shall take the steps required by subsection (5) below.
Before exercising any power under subsection (1) above, an authority shall take such steps as appear to the authority best designed to secure—
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The authority shall take such . . . steps as appear to them best designed to secure that the resolution is brought to the attention of persons residing or owning property in the renewal area.
A resolution under subsection (1) above has effect from the day on which it is passed.
A resolution under subsection (1) above does not affect the continued operation of the provisions of this Part, or any other enactment relating to renewal areas, in relation to works begun before the date on which the exclusion or cessation takes effect; but the resolution does have effect with respect to works which have not been begun before that date, notwithstanding that expenditure in respect of the works has been approved before that date.