Now covered in more depth
When you hire an architect, you will be asked to agree to a fee structure. The three main options, percentage of construction cost, fixed fee, and hourly, each have genuine advantages and trade-offs. Understanding them helps you negotiate a fair agreement.
Percentage of Construction Cost
How it works: The architect charges a percentage (typically 8% to 15% for residential) of the final construction cost.
Range in Seattle: 8% to 15% residential, 8-12% commercial
Best for: Full-service projects where the final scope is not yet fully defined
Pro: Fees scale naturally with complexity
Con: If construction costs increase (due to market or scope changes), fees increase proportionally. Also creates a theoretical incentive to design larger.
Fixed Fee
How it works: A single agreed fee for a clearly defined scope of services.
Range in Seattle: $15,000-$100,000+ depending on project size and scope
Best for: Well-defined projects, ADUs, smaller renovations
Pro: Budget certainty. You know exactly what design services cost.
Con: Scope changes require fee amendments. Architects may protect themselves with narrow scope definitions.
Planning a project?
Working out what your lot will allow, and what it will cost?
Send David the address and a few lines about what you want. The first basic feasibility check is free and usually takes about a day.
Architect since 1996, member of the AIA and NCARB. Three Masonry Excellence Awards for commercial projects; the Carr residence was featured in Above The Lake and Lux magazines.
Hourly Rate
How it works: You pay for time spent at an agreed hourly rate.
Range in Seattle: $150-$300/hour for licensed architects
Best for: Consultation, feasibility studies, limited-scope review
Pro: Only pay for what you need
Con: Budget is uncertain. Large projects can generate unexpectedly high fees.
Hybrid Approach
Many well-structured agreements combine approaches, a fixed fee for design phases (where scope is predictable) and hourly or allowance-based fees for construction administration (where time requirements are harder to predict).
How to Compare Proposals
When comparing proposals from multiple architects, make sure you are comparing the same scope. A 10% fee that includes construction administration is often better value than an 8% fee that stops at permit submission.
Comparing scope is easier when you can see what is included at each stage, our architecture services overview lays out the full scope behind our fees.
Piper Cole Architects explains fee structures clearly and provides complete, no-surprise proposals. Contact us for a free feasibility check. Call 425-753-6452.
Real-World Fee Examples: Seattle Eastside Projects (2026)
| Project Type | Construction Budget | Architecture Fee | Fee Structure |
|---|---|---|---|
| Garage conversion ADU (Kirkland) | $120K | $9,500 flat | Fixed fee |
| Primary suite addition (Bellevue) | $280K | $22K flat | Fixed fee |
| Second story addition (Kirkland) | $480K | $38K flat | Fixed fee |
| Custom home (Mercer Island) | $2.1M | $189K | Fixed fee |
| Whole-house remodel (Redmond) | $620K | $56K | Fixed fee |
Note: These are representative examples. Every project is scoped individually. Architecture fee includes schematic design through construction administration unless otherwise noted.
Frequently Asked Questions
Should I hire a Seattle architect on percentage or fixed fee?
Both structures work, the right choice depends on your project. Percentage-of-construction (8 to 15%) is common for projects where scope may evolve, like custom homes. Fixed fees work well when scope is clearly defined at the outset, like a standard addition or ADU. I price design and permit as a fixed fee on every project, custom homes included, and I recommend asking any architect to explain how their fee is set so you can compare. The more important question is whether the fee structure is transparent and what services are included, regardless of how it’s calculated.
What percentage do architects charge in Seattle?
Seattle residential architects typically charge 8 to 15% of construction cost for full-service work. Simpler projects, a straightforward ADU or kitchen remodel, tend to be on the lower end. Complex custom homes with challenging sites, unique structural systems, or high-end finishes can reach 15 to 18%. Commercial projects are often lower percentage but higher absolute dollar amounts. These percentages include all phases from schematic design through construction administration.
What are the risks of a fixed-fee architect contract in Seattle?
Fixed fees are clear and budget-friendly when scope is stable, but they create risk if the project scope expands. Change orders in design, adding square footage, switching structural systems, or adding a rooftop deck mid-design, typically trigger additional fee proposals. I write fixed-fee contracts with a clear scope description and a defined change-order process so clients aren’t surprised. The key is specificity upfront: the more clearly defined the scope, the more reliably a fixed fee works.
How do I compare architect fee proposals in Seattle?
Don’t compare bottom-line numbers without comparing scope of services. A lower fee that excludes construction administration or structural engineering coordination may cost more in the long run. I recommend asking every architect to itemize which phases are included, how many site visits are in their CA fee, and what triggers additional charges. Also ask about reimbursable expenses, printing, permit fees, consultant fees, which can add 5 to 15% beyond the base fee if not clearly outlined.
