RSA 447:8: Account.

Any person giving notice as provided in RSA 447:5-7 shall, as often as once in 30 days, furnish to the owner, or person having charge of the property on which the lien is claimed, an account in writing of the labor performed, professional design services provided, or materials furnished during the 30 days; and the owner or person in charge shall retain a sufficient sum of money to pay such claim, and shall not be liable to the agent, contractor or subcontractor therefor, unless the agent, contractor or subcontractor shall first pay it.