Delaware · 2026 cost guide
How much does a new roof cost in Delaware?
In Delaware, a new roof costs about $9,300–$21,500 in 2026 for a 1,800 sq ft (about 20-square) asphalt-shingle roof, tear-off included — roughly $463.5–$1081.5 per square (100 sq ft). That’s close to the U.S. average.
Estimate your Delaware project with the Roofing Square Calculator →
Delaware cost breakdown
| Typical total (a 1) | $9,300–$21,500 |
| Per square (100 sq ft) | $463.5–$1081.5 |
| Metro areas (Wilmington, Dover, and Newark) | up to ~$23,000 |
| Versus U.S. average | close to average |
What’s different about Delaware
Delaware's coastal exposure brings salt-air corrosion and humidity, increasing maintenance needs for exterior materials near the Atlantic.
- Algae-resistant shingles are popular where humidity drives streaking.
- Coastal salt favors corrosion-resistant flashing and fasteners.
Expect quotes toward the higher end in Delaware’s larger metros — Wilmington, Dover, and Newark — where labor and permit costs run above the state average, and lower in rural areas.
How the cost is built
Roof cost scales with roof area (measured in 100 sq ft 'squares'), pitch, and material — asphalt shingles are the budget choice, while metal, tile, and slate run two to four times more. Steep or complex rooflines, multiple layers to tear off, and new decking or flashing all add to the total.
Resale value
A new asphalt-shingle roof recoups roughly 60% of its cost at resale, per the annual Remodeling Cost vs. Value report — and it's often what lets a home sell at all.
Frequently asked questions
How much does a new roof cost in Delaware?
In Delaware, a new roof costs about $9,300 to $21,500 in 2026 for a 1,800 sq ft (about 20-square) asphalt-shingle roof, tear-off included — roughly 463.5–1081.5 per square (100 sq ft). That's close to the national average, reflecting local labor and material costs.
What affects the cost of a new roof in Delaware?
Delaware's coastal exposure brings salt-air corrosion and humidity, increasing maintenance needs for exterior materials near the Atlantic. Algae-resistant shingles are popular where humidity drives streaking.
How can I get an accurate roof replacement estimate for my home?
Use the free Roofing Square Calculator to plug in your real measurements and materials, then collect two or three local quotes to compare. Within Delaware, prices run higher in metros like Wilmington, Dover, and Newark and lower in rural areas.
Roof replacement cost by city in Delaware
Roof replacement cost in nearby states
Keep planning
Related calculators
Estimate roof replacement cost and what a storm-damage insurance claim is likely to net after depreciation and deductible.
Open calculator →ConstructionGutter CalculatorEstimate total gutter run, downspouts, hangers, and 10-ft sections from your footprint and roof style.
Open calculator →ConstructionSiding CalculatorEstimate wall area, siding squares, and boxes to order from footprint, stories, gables, and openings.
Open calculator →Sources & method
The Delaware figure is the national installed-cost range scaled by a Delaware regional cost index (its construction costs run close to the U.S. average), then adjusted for the local climate and code factors above. It’s a 2026 planning estimate, not a quote — get local bids before budgeting.
- Smart Cost Hub methodology — how our cost ranges and indices are built
- U.S. Bureau of Labor Statistics — Producer Price Index (construction materials)
- Roof Quotes Near Me — local Delaware contractor quote data