2026 Side-by-Side
ADU / Garage Conversion vs Addition Cost
ADU / Garage Conversion runs about 100% more than Addition in 2026. Here's the full breakdown.
National typical
ADU / Garage Conversion
$94,198
$56,519–$150,717 range
Full guide
National typical
Addition
$47,091
$25,686–$77,058 range
Full guide
| 2026 Cost | ADU / Garage Conversion | Addition |
|---|---|---|
| Low range | $56,519 | $25,686 |
| Typical | $94,198 | $47,091 |
| High range | $150,717 | $77,058 |
ADU / Garage Conversion vs Addition Cost: FAQ
Which costs more, ADU / Garage Conversion or Addition?
ADU / Garage Conversion costs more — about $94,198 typical versus $47,091 for Addition in 2026, roughly 100% higher. Ranges overlap at the margins, so scope and finish level can flip the math on any individual project.
What's the 2026 cost range for ADU / Garage Conversion vs Addition?
ADU / Garage Conversion: $56,519–$150,717 (typical $94,198). Addition: $25,686–$77,058 (typical $47,091). Figures reflect a national-average cost index.
Why does one project cost more than the other?
The difference reflects scope, square footage, materials, and labor intensity. RemodelerIQ breaks every bid into labor-vs-materials so you can see exactly where the money goes.
Got a bid for either?
We audit your contractor's estimate against live local wage data to flag padded scope and hidden margins — free.
Data sources: Zonda Cost vs Value 2025; Houzz 2024 Cost Guides; BLS OEWS 2023; FRED regional price indices; Reddit homeowner & contractor reports.
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