What will your architect cost?
Estimate architect fees for an ADU, addition, new home or remodel. The range is free; leave your details for a PDF and three matched quotes.
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Estimates are for planning only. Ranges use 2026 national cost guides adjusted for your ZIP code. Exact price after consultation.
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How much does an architect cost?
Residential architects usually charge 5% to 20% of construction cost, or $5,000 to $60,000 for a typical home design. Permit drawings alone cost $2,000 to $20,000. Building an ADU costs about $100 to $300 per sq ft. This architect fee calculator prices design fees per square foot from 2026 cost guides and adjusts for your ZIP code.
How much does it cost to build an ADU?
About $100 to $300 per sq ft. A 600 sq ft ADU costs roughly $48,000 to $96,000 prefab, $75,000 to $135,000 attached, and $90,000 to $150,000 detached. Design fees come on top; this calculator estimates them for an ADU by size and scope.
How do architects charge for a home project?
Most charge a percentage of construction cost, 5% to 20% for homes, remodels and additions. Others bill hourly, about $100 to $250 and up to $350 for a firm principal, or per square foot, about $2 to $15. Ask which method a quote uses before you compare.
How long does ADU approval take in California?
California cities must approve or deny a complete ADU application within 60 days, according to the state HCD ADU Handbook. The clock starts once the application is complete. The calculator also shows an estimated timeline to permit for your project type.
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