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California · Local pricing guide

Roof Replacement Cost in Ontario, California: What to Expect

Typical installed range — full replacement
$7,000 – $29,000

A full roof replacement in Ontario typically runs $7,000 – $29,000 installed — $500 – $1,300 per square (100 sq ft) — including tear-off, permits, and local labor.

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Price reference · Reviewed June 2026

Roofing cost by material.

Installed price ranges for a full roof replacement in Ontario, adjusted for local labor and code. Linked materials have a dedicated city guide.

  • Architectural shingle roof
    Dimensional laminated shingles — the U.S. default
    $9,300 – $18,500
  • 3-tab shingle roof
    Entry-level asphalt
    $7,000 – $12,000
  • Standing-seam metal roof
    Concealed fasteners, 40–70 year service life
    $17,500 – $46,500
  • Corrugated metal roof
    Exposed-fastener panels
    $9,300 – $23,000
  • Flat roof membrane
    TPO, EPDM, or PVC for low-slope sections
    $5,800 – $17,500
  • Tear-off & disposal
    Removing the old roof, dumpster included
    $1,150 – $3,500
  • Permits & inspection
    Varies by municipality
    $300 – $1,150

* Ranges adjusted for Ontario's tier and median income — verify with an on-site quote.

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How it works

What happens when you call

  1. Call the number

    Takes about two minutes — no account, no forms.

  2. Describe your roof

    Roof type, approximate size, and what you want done in Ontario.

  3. Talk to a licensed contractor

    You get connected with an independent local roofing pro. No obligation.

Interactive

Build your Ontario estimate

Adjust the inputs below. The range updates live and is adjusted for Ontario's labor market —+16% vs national avg.

Your estimate
$10,000–$19,500
for Ontario, California · +16% vs national avg

Indicative range based on Ontario-adjusted rates. Deck condition, flashing, and contractor overhead may shift the final invoice. Get written quotes from licensed roofing contractors before signing.

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Before you sign: the quote checklist

  • Get quotes from at least 3 licensed roofing contractors in Ontario.
  • Make sure every quote itemizes tear-off, underlayment, flashing, and disposal.
  • Verify licensing and insurance before hiring — ask for certificates, not promises.
  • Ask about both the material warranty and the workmanship warranty — they differ.
The local picture

Roof Replacement in Ontario: what matters

Ontario's inland Southern California location brings intense sun, occasional Santa Ana winds, and rare but damaging hailstorms. Many homes in neighborhoods like the historic district near Euclid Avenue have older roofs that are now reaching the end of their service life. Whether you own a mid-century tract home or a newer build, understanding the local factors that influence roof replacement cost in Ontario helps you plan your project with confidence. This guide covers what Ontario homeowners should know about roof replacement, from material choices to permitting requirements.

Cost factors

Why Roof Replacement Costs Vary in Ontario

Ontario's climate drives specific cost factors. High UV exposure accelerates asphalt shingle degradation, often requiring replacement sooner than in cooler regions. The occasional Santa Ana wind event can lift and damage shingles, especially on older roofs. California's building code requires energy-efficient underlayments and proper ventilation, which can add to material costs. Local labor rates reflect the Inland Empire's competitive construction market. Disposal fees for old roofing materials vary by landfill, and the city's permitting office charges fees based on project scope. Home style also matters: ranch-style homes with low-slope roofs may need different materials than steep-pitch roofs common in newer subdivisions.

Ontario by the numbers

U.S. Census Bureau · ACS
180,138
Population
29,246
Homeowners
56% own
$511,790
Median home value
$78,431
Median income
1978
Median home built
≈ 48 yrs old
54,884
Housing units

29,246 homeowner households, median home built 1978 — a housing stock where many roofs are at or past their service life. Local labor sets the rate roofers charge in Ontario.

Field notes

Common Roof Issues That Lead to Replacement in Ontario

  1. UV Degradation

    Ontario's abundant sunshine causes asphalt shingles to dry out and crack over time, reducing their ability to shed water.

  2. Wind Damage

    Santa Ana winds can lift shingles, creating gaps that allow water intrusion and further wind uplift.

  3. Hail Impact

    Though infrequent, hailstorms in Ontario can bruise or crack shingles, compromising the roof's integrity.

  4. Old Age

    Many homes in Ontario's older neighborhoods have roofs approaching 20-30 years, the typical lifespan of asphalt shingles.

  5. Poor Ventilation

    Inadequate attic ventilation, common in older homes, traps heat and moisture, accelerating shingle wear and deck rot.

The process

What to Expect During a Roof Replacement in Ontario

A typical roof replacement in Ontario begins with an inspection by a licensed California contractor. They'll measure your roof, assess the deck condition, and order materials. The tear-off removes old shingles and underlayment, followed by deck repairs if needed. New underlayment, flashing, and shingles are installed per the state of California's building code. The city's building department requires a permit for most re-roofs, and final inspection ensures code compliance. The process usually takes a few days to a week, depending on roof size and complexity.

Nearby coverage

Roof Replacement pricing near Ontario

Q&A

Roof Replacement cost questions — Ontario

What factors affect roof replacement cost in Ontario?

Cost depends on roof size, pitch, material choice (asphalt, tile, metal), and the condition of the existing deck. Local labor rates, permit fees, and disposal costs also play a role. In Ontario, homes with tile roofs may have higher costs due to material weight and installation complexity. The age of your roof and any necessary structural repairs will also influence the final price.

How do I choose a roofing contractor in Ontario?

Look for a contractor licensed by the California Contractors State License Board (CSLB). Verify their license number, ask for references, and get multiple written estimates. Check for insurance and warranty coverage. Avoid contractors who require full payment upfront or pressure you into signing quickly. A reputable contractor will provide a detailed scope of work.

Does California require a license for roofing contractors?

Yes, any roofing contractor performing work over $500 must hold a valid California contractor license (Class C-39 for roofing). The CSLB regulates licensing and provides consumer protection. Always verify a contractor's license online before hiring.

When is the ideal time to replace a roof in Ontario?

Spring and fall offer mild temperatures, making conditions comfortable for workers and allowing adhesives to seal properly. Summer heat can make work challenging, but it's still feasible. Winter rains can cause delays, so plan around the dry season if possible.

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

Yes, the city of Ontario requires a building permit for most roof replacements. Your contractor typically handles the permit application. The process includes plan review and a final inspection to ensure the work meets the state of California's building code. Unpermitted work can lead to fines and issues when selling your home.

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Get a roofing quote.

Compare quotes from licensed local roofing contractors.

(855) 000-0000

Lines: Mon–Fri 9am–7pm

Call (855) 000-0000