Typical Design Costs - DADU
- National Design
- Oct 21
- 1 min read
Updated: Oct 22
The prices for the Architectural Set are fixed and valid until May 2026.
Type of Project | Architectural Design | Structural Engineering | Civil (Drainage Report) (if required) | Septic Design (if required) | Additional Reports (if required) |
DADU < 1000 sq ft | $3000 - $4,000 | ~$3,800 | ~$2,800 | ~$3,500 | Geotech / Arborist / Topo Survey — case-by-case |
DADU < 1000 sq ft + Garage | $3000 - $4,500 | ~$3,800 | ~$2,800 | ~$3,500 | Geotech / Arborist / Topo Survey — case-by-case |
DADU 1000 sq ft | $4,000 | ~$3,800 | ~$2,800 | ~$3,500 | Geotech / Arborist / Topo Survey — case-by-case |
DADU 1000 sq ft + Garage | $5,000 | ~$4,000 | ~$2,800 | ~$3,500 | Geotech / Arborist / Topo Survey — case-by-case |
DADU 1200 sq ft | $5,000 | ~$3,800 | ~$2,800 | ~$3,500 | Geotech / Arborist / Topo Survey — case-by-case |
DADU 1200 sq ft + Garage | $5,500 | ~$4,000 | ~$2,800 | ~$3,500 | Geotech / Arborist / Topo Survey — case-by-case |
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