INTERIOR
Attic Finish Cost: Convert Attic to Bedroom in 2026
Estimate attic conversion cost per square foot — with the free remodeling calculator.
An unfinished attic is the cheapest source of square footage in most homes — if the structure and headroom cooperate. Here's the real 2026 cost.
THE SHORT ANSWER
The short answer
Finishing an attic runs $30–$60 per sq ft in 2026 for simple rooms ($10,000–$50,000 total); full conversions with a bathroom run $100–$200 per sq ft ($20,000–$95,000). Structural work adds $10,000–$40,000.
What it costs
A simple finished attic (drywall, insulation, floor, electrical) runs $30–$60 per sq ft. Adding a dormer for headroom runs $10,000–$30,000. A full conversion with a bathroom and bedroom runs $100–$200 per sq ft.
- Simple finish: $30–$60 per sq ft
- Full conversion: $100–$200 per sq ft
- Dormer for headroom: $10,000–$30,000
- Typical total: $10,000–$50,000
The structural reality
Attic floors are often framed for storage, not living — reinforcement runs $10,000–$40,000. Headroom (7 ft over half the floor) is code for bedrooms. Stairs, egress windows and HVAC runs add more.
Try the remodeling calculator
Enter your labor, materials and fixtures to rough out the budget.