10/06/2026
🏡 Thinking About Building an ADU? Now You Can See the Price Before You Start.
We just launched the Oria ADU Collection — pre-designed, pre-priced ADU models from 400 to 1,200 sq. ft.
And these are NOT prefab or modular boxes.
Every Oria ADU is site-built on your property, with a permanent foundation, conventional framing, city inspections, and the same construction methods used to build a new home.
Choose the size that works for your property:
✅ Garage Conversion — 400 sq. ft. from $74,000
✅ The Studio — 400 sq. ft. from $160,000
✅ The 600 — from $180,000
✅ The 800 — from $250,000
✅ The 1000 — from $330,000
✅ The 1200 — from $400,000
Our base pricing includes:
🏗 Architectural plans
📐 Structural engineering
📝 Permit handling
🔨 Construction
⚡ Electrical & plumbing
❄️ Heating & cooling
🍳 Kitchen cabinets & countertops
🏠 Roofing, insulation, windows, doors & finishes
✅ City inspections through final sign-off
Most detached ADUs take approximately 18–24 weeks to build once permits are issued.
Want to see the models, floor plans and pricing?
👉 https://oriabuilders.com/adu-models
Not sure which ADU works on your property? Schedule a free site visit and we’ll check your setbacks, access, utilities and available space.
📞 Oria Builders
Licensed California General Contractor
CSLB #1029255
Six site-built ADU models with published prices, from a garage conversion at $74,000 to a 1,200 sq ft three-bedroom. Plans, permits, construction and kitchen included. Not prefab. Licensed California general contractor, CSLB #1029255.