Quantity Surveying Service Invoice

What a good one includes

• Comprehensive project identifiers, including the specific contract reference number, site address, and client project code.
• A detailed breakdown of the charging method, clearly separating lump-sum milestone fees, hourly consultancy rates, or percentage-of-cost calculations.
• An itemized list of completed deliverables, such as preparation of the bill of quantities, tender evaluations, or monthly interim valuations.
• A transparent reconciliation of reimbursable disbursements, including site travel expenses, printing costs, or specialized software licensing fees.
• Clear tax treatments, showing local VAT or sales tax calculations alongside your company registration and tax identification numbers.
• Specific, non-negotiable payment terms that outline bank transfer details, due dates, and any applicable late payment penalties.

Common mistakes to avoid

• Grouping diverse consultancy tasks under vague, single-line descriptions like 'estimating services' rather than itemizing the specific stages completed.
• Failing to reference the original fee proposal or contract agreement, which leads to lengthy client approval delays and administrative confusion.
• Omitting the exact date range for which the cost consultancy services were performed, making it difficult to track billing periods against the master construction schedule.
• Neglecting to clearly state the cumulative amount billed to date on long-term, multi-phase projects where progressive retention or milestone payments are involved.

Frequently asked questions