500 Sq ft ADU Cost Calculator
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| Item | Cost Range ($) |
|---|---|
| Design and Architectural Plans | $3,000 – $8,000 |
| Permit Fees | $1,000 – $5,000 |
| Site Preparation | $2,000 – $5,000 |
| Foundation | $5,000 – $15,000 |
| Framing | $7,000 – $15,000 |
| Exterior Finishes (Siding, Roofing) | $5,000 – $10,000 |
| Windows and Doors | $3,000 – $8,000 |
| Plumbing | $4,000 – $10,000 |
| Electrical | $4,000 – $8,000 |
| HVAC | $3,000 – $8,000 |
| Insulation | $1,000 – $3,000 |
| Interior Finishes (Drywall, Paint) | $5,000 – $10,000 |
| Flooring | $3,000 – $7,000 |
| Cabinetry and Fixtures | $5,000 – $12,000 |
| Appliances | $2,000 – $6,000 |
| Miscellaneous (contingency) | $3,000 – $8,000 |
| Total Cost | $54,000 – $130,000 |