Budget: $175,000 – $275,000
Whether you’re housing an aging parent or creating a rental unit, an Accessory Dwelling Unit (ADU) is one of the smartest ways to spend home equity in 2026.
The $200k Build Breakdown
The $200k Build Breakdown
Standalone Unit Avg ~ 660 sq. ft.
Nationally, a ground-up one-bedroom ADU averages about $166,406. At the $275k end, you’re looking at premium materials like standing-seam metal roofing and fiber-cement siding.
Interior Features
These units typically include a full kitchen (often opening to a vaulted living room), a 5’x7′ bathroom with walk-in shower, and a separate bedroom with a walk-in closet.
Climate & Efficiency
In 2026, high-efficiency mini-split heat pumps are the standard for ADU climate control.
PRO Tip
Permit Logistics
ADUs almost always require a full set of permits (structural, electrical, plumbing). If a contractor suggests “doing it on the side” without a permit to save $5,000, run. Unpermitted ADUs can’t be legally rented and will be a nightmare to insure or sell later.
Before you sign a contract for a six-figure project, run your bid through the RemodelerIQ Analysis Tool.
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