ADU Cost Estimator
You don't like the sales pitch. Neither do we.
Here's an instant estimate — no forms, no callbacks, no pressure. Many details affect these numbers, but if you'd like a second opinion and you're in San Diego, we'll review your plans and walk your site to verify these figures for free.
Project Details
Natural Gas
Include gas service in estimate
Dimensions
Dwelling units
Footprint of the structure
Heated/cooled interior space
All framed area including garages, covered patios
Total roof surface area including overhangs
Balconies and decks requiring waterproofing
Rooms
Medium (80–150 sq ft)
Construction Total
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Structure · Exterior · MEP · Interior
Enter foundation and living area to see estimate
Construction Costs
Foundation
Slab-on-grade or raised floor foundation
Framing
Wood framing and structural hardware
Insulation
Batt and blown insulation
Roofing
Composition shingle or flat roof system
Stucco
3-coat stucco system
Windows
Vinyl dual-pane windows
Exterior Doors
Exterior entry doors
Deck Waterproofing
Waterproofing membrane and coating
Gutters
Aluminum gutters and downspouts
Plumbing
Rough-in and finish plumbing
Electrical
Wiring, panels, and fixtures
HVAC
Mini-split or ducted HVAC system
Water Heaters
Tankless or tank water heater
Drywall
Hang, tape, texture, and prime
Interior Doors
Interior passage doors
Cabinets
Semi-custom kitchen cabinets
Countertops
Quartz or granite countertops
Flooring
LVP or tile flooring
Paint
Interior and exterior paint
Appliances
Standard appliance package
Plumbing Fixtures
Faucets, toilets, and accessories
Finish Work
Trim, baseboards, casing, and hardware
Shower Doors
Frameless or semi-frameless shower enclosure
Tub / Shower Tile
Tile labor and material
Laundry
Hookups, enclosure, and connections
Soft Costs
Plans
Architectural and structural drawings
Management
Project management and overhead
Miscellaneous
Contingency and miscellaneous items
Other Possible Expenses
These costs vary widely depending on your site conditions, existing utility connections, and local jurisdiction. Some may not apply to your project at all — others could be significantly higher. We flag them separately so they don't distort the construction estimate above.
Demo & Grading
Demolition and site grading
Flatwork / Concrete
Concrete walkways and flatwork
Electric Service
Utility connection and panel upgrade
Gas Service
Gas meter and service line
Water Service
Water meter and service connection
Sewer Service
Sewer lateral connection
Permits
City permit fees — varies significantly by jurisdiction
This estimate is for budgeting purposes only. Actual costs vary based on site conditions, material selections, and current market pricing. Contact us for a detailed project quote.