It is a condition of payment of reinstatement grant that the qualifying work is carried out—
to the satisfaction of the local housing authority, and
within the period specified in the notice of determination. or that period as extended.
The period so specified shall be such reasonable period (of at least twelve months), beginning with service of the notice, as the authority may determine.
The authority shall, if there are reasonable grounds for doing so, by notice in writing served on the person entitled to assistance, extend or further extend the period for carrying out the qualifying work (whether or not the period has expired).
Payment of reinstatement grant shall not be subject to any other condition, however expressed.