Possible Clues:

• Necessity
• Parking, about to be doubled, is quite haphazard: it must come first
• Most of the short preparation is about who in France gives work to the builders or that's the proviso
• Before writing 'fine', rub out 'unknown condition'
• Pressure to require builders on site - it's a condition that must be satisfied
• Early qualification
• Something that is required in advance
• Must I require pet's correction?
• Needed as a prior condition before being indispensable
• Something required as a prior condition