Independent · Transparent · Built for homeowners

Know what your home project should cost.

Get an independent cost estimate, check a contractor’s quote and compare your options — without giving us your phone number.

Calculate my roof cost Check a quote

No phone requiredFree estimates
IndependentWe work for you
TransparentSee how we calculate

Example estimate

Phoenix, AZ 85018

$10,350 – $15,200

$10,350$15,200

Materials$5,258

Labour$2,979

Equipment$520

Disposal$158

Permits$280

Overhead and profit$2,942

Confidence50/100

Limited — labour is government wage data, materials are still modelled.

A 2,000 sq ft roof in Phoenix, produced by the calculator — not a mockup.

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Materials we price

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How it works

Five simple steps to a smarter decision

Three questions, answered properly

Not another roofing calculator

Directories send you to contractors. Cost guides give you a national average. Neither tells you whether the number in front of you makes sense.

What should my roof cost?

Answer three questions for a first range, then refine any assumption — pitch, layers, decking allowance, access — and watch the price move. Every line item shows how it was calculated.

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Is my contractor's quote fair?

Compare a real quote to the modelled range. If it sits outside, we re-run the model changing one assumption at a time and tell you which single change would account for the gap.

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How do my quotes compare?

Enter several quotes with their scope. We price back in what each one leaves out, so a quote that is cheapest only because it omits the tear-off stops looking cheapest.

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Compare properly

Two quotes for the same roof

The cheaper quote is not automatically the better one. We compare what each includes and price back in what it leaves out, so the difference stops being a mystery.

Contractor A

Within range

$11,800

-2.9% against our typical figure

Tear-off and disposal
New underlayment
Lifetime material warranty
Ridge vent
Decking allowance — not stated

Contractor B

Above range

$15,800

+30% against our typical figure

Tear-off and disposal
New underlayment
Lifetime material warranty
Ridge vent
Decking allowance

So which one is actually cheaper?

A is $4,000 less and says nothing about the decking. If the deck needs work that becomes a change order after the tear-off, when you have no leverage. B includes an allowance — but an allowance is worth perhaps two thousand on a roof this size, so it explains part of the gap, not all of it. The rest is a question for B.

Scope shown is illustrative. The prices and verdicts are computed by the same engine as the rest of the site, against the estimate at the top of this page.

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Local pricing that makes sense

Roofing costs, city by city

Local costs vary with labour, climate, permitting and the materials that are actually common there. A city gets a page when we have something specific and true to say about it.

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Austin, TX

$9,800 – $14,500

Architectural asphalt shingle · 2,000 sq ft

Access and staging genuinely change the price

Boston, MA

$11,350 – $16,550

Architectural asphalt shingle · 2,000 sq ft

Ice damming is the defining local failure

Cherry Hill, NJ

$10,800 – $16,050

Architectural asphalt shingle · 2,000 sq ft

Detached houses with working room, which keeps labour predictable

Chicago, IL

$13,350 – $22,500

Modified bitumen (low slope) · 2,000 sq ft

The Chicago bungalow and two-flat are the local archetype

Dallas, TX

$9,650 – $14,300

Architectural asphalt shingle · 2,000 sq ft

Impact-resistant shingles are a real local decision

Detroit, MI

$10,900 – $16,450

Architectural asphalt shingle · 2,000 sq ft

Multiple existing layers are the norm, not the exception

Houston, TX

$9,550 – $14,150

Architectural asphalt shingle · 2,000 sq ft

Decking rot is a genuine budget risk, not an upsell

Jersey City, NJ

$13,150 – $21,850

Modified bitumen (low slope) · 2,000 sq ft

Most of the housing stock is flat-roofed, so this is membrane work

Las Vegas, NV

$19,650 – $33,500

Concrete tile · 2,000 sq ft

Extreme thermal cycling shortens underlayment life

Los Angeles, CA

$11,950 – $17,300

Architectural asphalt shingle · 2,000 sq ft

Wildfire zone requirements can change the whole assembly

Miami, FL

$19,950 – $33,900

Concrete tile · 2,000 sq ft

High-velocity hurricane zone product approval

Newark, NJ

$11,650 – $17,800

Architectural asphalt shingle · 2,000 sq ft

Attached and semi-attached houses change the job

Orlando, FL

$10,100 – $15,050

Architectural asphalt shingle · 2,000 sq ft

Inland wind zone lowers the compliance floor

Philadelphia, PA

$12,100 – $19,800

Modified bitumen (low slope) · 2,000 sq ft

The typical roof is flat, attached and reached from inside

Phoenix, AZ

$19,050 – $32,650

Concrete tile · 2,000 sq ft

Tile underlayment replacement is its own job

San Diego, CA

$23,150 – $37,650

Concrete tile · 2,000 sq ft

Labour cost, not weather, is the main driver

Tampa, FL

$10,100 – $15,100

Architectural asphalt shingle · 2,000 sq ft

Roof age drives insurability, not just leaks

All citiesSee every location we cover

Each range is a representative 2,000 sq ft single-storey roof in that city, priced in the material most common there — so Phoenix and Las Vegas are tile while Austin is asphalt, and the cards are not directly comparable to one another. Your roof is not the representative one either; the calculator prices yours.

Transparent methodology

We show our work

An estimate you cannot interrogate is just a number someone made up. Ours breaks into the same components a contractor uses to build a price, and tells you where each one came from.

Every price is dated and attributed

Each pricing row carries a source, a licence note, the period it describes, the date we collected it and a data-status flag: verified, modelled, or sample.

The confidence score can go down

ZIP-level data earns more than national fallback. Stale data loses points. While any sample data is in the mix, the score is capped at 60 and says so.

Ranges are combined, not stacked

Adding every component's worst case together describes a job that does not exist. Component uncertainties are combined in quadrature, assuming partial independence.

Nothing multiplicative is hardcoded

Every factor - pitch, storeys, complexity, access, overhead - is a database row an administrator can retune without a deploy.

See how we calculate it Data sources and licences

How reliable is this?

Updated as data lands

Labour: Government data
Materials: Partly observed
Local coverage: 17 cities
Geometry: Exact

About 65% of a typical re-roof is still priced from modelled rows, so every estimate is capped at a confidence of 60 until that changes. We would rather show you that than a confident-looking number we cannot stand behind. Sources and licences

Always improving

We combine public government data, observed market prices and homeowner submissions to keep the numbers current. Every price is anchored to a date and carried forward on a published index, so the estimate you get today is not last year’s number in a new wrapper.

Learn about our data →

Your data is yours.

The estimate, the quote check and the comparison all work without a phone number, an email address or an account. We only ask for contact details at the point where you tell us you want local contractors to call you — because that is the only step where somebody has to.

No spamWe don't sell your details.
No pressureNo contractor calls unless you ask.
You're in controlNothing is shared without your say-so.

What comes next

Roofing first, done properly

Launching twenty categories at once produces twenty shallow ones. Each new service arrives as a data set plus one engine module, so the calculator, quote tools and local pages work for it on day one.

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