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How much does a roof replacement cost in Williamstown, NJ?

Regionally adjustedUpdated Prices checked October 20262 sources

In Williamstown, a roof replacement typically runs $8,750 to $16,340, about $11,670 for a typical job. That is the US national range from Fixr ($7,500 to $14,000) adjusted by the Middle Atlantic factor of 1.17 from the 2025 Cost vs. Value Report. Checked October 2026.

Adjusted for the Middle Atlantic region

Low
$8,750
Typical
$11,670
High
$16,340

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Roof replacement cost in Williamstown, NJ

Each row says exactly what the figures are and where they come from.

Roof replacement cost in Williamstown, NJ
EstimateLowTypicalHighBasisChecked
Middle Atlantic estimate$8,750$11,670$16,340National range × 1.17: the Middle Atlantic / national cost ratio for “Roofing Replacement | Asphalt Shingles” ($37,201 vs $31,871) in the 2025 Cost vs. Value ReportOctober 2026
US national range$7,500$10,000$14,000Per project: asphalt shingles on a 1,700 sq ft home (about 2,000 sq ft of roof) (Fixr)October 2026

Roof replacement cost by type or size

US national figures in USD, as published by each source.

Roof replacement cost by type or size
Type or sizePrice (USD)Source
Slate roof$20,000 to $60,000Fixr
Copper roof$30,000 to $60,000Fixr

What drives the cost of a roof replacement

  1. Roof size

    Contractors price by the square foot, about $3.75 to $11 and $4.75 on average.

  2. Material

    Asphalt shingles average about $10,000; slate and copper run $20,000 to $60,000.

  3. Pitch and shape

    Hips, valleys, dormers and steep pitches add labor; a steep pitch can add $1,000 to $3,000.

  4. Tear-off and disposal

    Removal averages about $50 per square (100 sq ft), up to $150 for heavy materials.

  5. Decking repairs

    Rotten or damaged decking found during tear-off costs $2 to $8 per sq ft to replace.

  6. Local labor and code

    Labor is roughly 40% to 60% of the total; fire-, wind- or impact-rated codes can add more.

Permits and what's included in Williamstown

Permit note

Re-roofing usually needs a building permit. Permits typically cost $100 to $500, and strict fire-, wind- or impact-resistance codes can add more in some areas.

Rules are set locally; confirm with Williamstown’s building department.

What’s usually included

  • Removal of the old roof
  • Underlayment and standard roofing felt
  • Installation of the new roof covering
  • Manufacturer and workmanship warranties (terms vary by contractor)

Scopes vary. Get the scope in writing on every quote.

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Top-ranked roofers in Williamstown

The top 3 of 1,370 roofers we rank for Williamstown, NJ, by CR Score. Paid placement never changes rank.

  1. #1
    Emmons Roofing & Siding
    CR Score 634.7from 449 Google reviews
  2. #2
    Mighty Dog Roofing of South Jersey
    CR Score 624.9from 166 Google reviews
  3. #3
    Viking Roofing New Jersey
    CR Score 614.9from 155 Google reviews

See all ranked roofers in Williamstown

How to check a roofer's license in New Jersey

In New Jersey, New Jersey Division of Consumer Affairs, Home Improvement Contractors licenses Home improvement contractor registration for residential roofing.

  1. Search the business name or license number on the New Jersey Division of Consumer Affairs, Home Improvement Contractors license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. Ask for proof of insurance before work starts.

No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.

Guide checked October 2026. How we verify licenses

Roof replacement cost in Williamstown: questions

How much does a roof replacement cost in Williamstown, NJ?

In Williamstown, a roof replacement typically runs $8,750 to $16,340, about $11,670 for a typical job. That is the US national range from Fixr ($7,500 to $14,000) adjusted by the Middle Atlantic factor of 1.17 from the 2025 Cost vs. Value Report. Checked October 2026.

Why is the Williamstown price different from the national price?

The 2025 Cost vs. Value Report puts the “Roofing Replacement | Asphalt Shingles” project at $37,201 in the Middle Atlantic division against $31,871 nationally, a factor of 1.17. We apply that factor to the national range. It is a division-level adjustment, not a Williamstown price survey.

Do I need a permit for a roof replacement in Williamstown?

Re-roofing usually needs a building permit. Permits typically cost $100 to $500, and strict fire-, wind- or impact-resistance codes can add more in some areas. Rules are set locally, so confirm with Williamstown’s building department.

What affects the cost of a roof replacement?

Roof size: contractors price by the square foot, about $3.75 to $11 and $4.75 on average. Material: asphalt shingles average about $10,000; slate and copper run $20,000 to $60,000. Pitch and shape: hips, valleys, dormers and steep pitches add labor; a steep pitch can add $1,000 to $3,000. Tear-off and disposal: removal averages about $50 per square (100 sq ft), up to $150 for heavy materials.

How many roofers serve Williamstown?

We rank 1,370 roofers for Williamstown, NJ by CR Score. Get at least three written quotes for the same scope.

What is usually included in the price?

Removal of the old roof; Underlayment and standard roofing felt; Installation of the new roof covering; Manufacturer and workmanship warranties (terms vary by contractor). Always get the scope in writing on the quote.

Sources

Checked October 2026. Figures are estimates, not quotes.

  1. Fixr: Roof replacement cost · page updated February 4, 2026 · checked October 2026Primary source. Used for: Low, typical and high; basis; drivers; permit.
  2. HomeAdvisor: Roof replacement cost · page updated June 17, 2026 · checked October 2026Used for: Cross-check: normal range $5,903 to $13,378, average $9,609 (customer-reported projects); pitch driver.
  3. Journal of Light Construction: 2025 Cost vs. Value Report, Middle Atlantic division · checked October 2026Used for: Regional factor 1.17 for “Roofing Replacement | Asphalt Shingles”.
These are published estimates with a documented regional adjustment, checked October 2026. They are not quotes. Typical range shown: $8,750 to $16,340. Editorial policy

Related pages

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