Possible Clues:

• Gov't branch you see as housing experts
• Skilled people, as found around part of govt.
• Father is back before Sept., but only for the experts
• Proficient ones
• They're expert as about a bit of business
• Hurried back, saving time, chasing American experts
• May be pasted for the experts
• Virtuosos, hotshots
• A bit of the business that's for the experts
• Part of the business is only for the experts