Understanding how your architect will bill you is as important as understanding how much they will charge. Here is a practical guide to how architectural fees are typically structured, invoiced, and paid in the Seattle area.
Retainer at Project Start
Most architecture firms require a retainer — typically 10-20% of the total estimated fee — at contract signing. This retainer gives the architect confidence to begin work and is credited against future invoices.
Milestone-Based Billing
For fixed-fee projects, billing is typically tied to design milestones:
- 20-25% at completion of schematic design
- 20-25% at completion of design development
- 25-30% at completion of construction documents
- 15-20% at permit submission
- 10-15% during construction administration (monthly or at completion)
Monthly Billing for Hourly Work
Hourly projects are billed monthly based on time records. Invoices should show hours by person, hourly rate, and task performed.
Reimbursable Expenses
Costs incurred on behalf of the project — printing, travel, permit fees, special inspections — are typically billed as reimbursables at cost or with a small markup. These should be itemized separately from design fees.
Change Orders
Significant scope changes after a phase is complete typically trigger a contract amendment and additional fee. Understand this before signing so changes do not surprise you.
Piper Cole Architects provides clear, itemized invoices and explains billing at project start. Free consultation — call 425-753-6452.
Ready to Start Your Project?
Piper Cole Architects offers a free initial consultation for all project types — residential, commercial, ADU, and renovation. No obligation. Based in Kirkland, WA. Serving the entire Seattle metro area since 2000.