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HaldenRoofing Co.
(406) 555-0142 Book inspection

(Roof cost estimator)

What would a new roof cost?

Five questions give you a realistic guide price with every line shown. The fixed price comes after we have been on the roof, because decking and flashing are where estimates go wrong.

Based on
Ashford Valley jobs
Range
−8% to +15%
Fixed price
After a free inspection
Step 1 of 5How big is the house?

The ground-floor footprint, including an attached garage if it shares the roof. Property records or your house plans usually give it.

1,800 sq ft
Type an exact figure, 800–4,000
Step 2 of 5How many stories?

Taller houses need more safety kit and longer hauls: +8% for two stories, +16% for three.

Step 3 of 5How steep is the roof?

Steeper roofs have more surface for the same footprint. If you could not walk on it comfortably, choose steep.

Step 4 of 5How many layers come off?

Look at the edge of the roof from a ladder: two sets of shingle edges means two layers. None is for new builds and bare decks.

Step 5 of 5Which material?

Guide installed rates per square (100 sq ft) before tear-off. The materials library explains each one.

Guide price range

$16,800to$21,000

Roof area1,800 sq ft × 1.18 pitch × 1.12 overhangs ÷ 100
24 squares
Architectural shingle, installed24 squares × $520 per square
$12,480
Height and access2 stories: +8% for access and safety
+$998
Tear-off and disposal24 squares × $90 × 1 layer
$2,160
Permit, dumpster, flashing kitEvery job
$650
MidpointRange shown is 8% below to 15% above
$16,288
Typical time on site
2–3 days
Book an inspection for a fixed price

A guide price, not a quote. Your fixed written price follows a free inspection, within 48 hours.

(How it works)

Nothing hidden in the maths

The same formula runs the estimator on our homepage. Here it is, line by line.

  • Roof area in squaresfootprint × pitch × 1.12 ÷ 100, rounded up

    Pitch adds surface: a medium roof has about 18% more area than its footprint. The 1.12 covers overhangs, and a square is 100 sq ft of roof.

  • Materials and installsquares × rate × height factor

    The rate is our guide installed price per square for the material. Two stories add 8%, three add 16%.

  • Tear-off and disposalsquares × $90 × layers

    Removing each existing layer down to the deck, plus the dumpster and tipping fees.

  • Fixed costs$650

    Permit, dumpster delivery and a flashing kit. On every replacement, whatever the size.

  • The rangemidpoint −8% to +15%

    Skewed upward on purpose: the things an estimate cannot see (rotten deck, extra chimneys) only ever add cost.

(After the inspection)

What the fixed price adds that this cannot

These are the lines that separate a guide price from a real one. They are all on our written scope, priced before you sign.

What should be on a quote
Deck sheets
$88 each, only if needed, each one photographed
Chimneys
From $640 each for new step and counter flashing
Skylights
Reflash from $690, or replace from $1,850
Missing soffit intake
$12–18 per foot
Low-slope porch or dormer roofs
Membrane priced per square
Gutters, if you want them done too
From $1,450

(Free inspection)

Turn the guide price into a fixed one.

Book a free inspection. The written scope follows within 48 hours, and there is no deposit until materials arrive.

Book a free inspectionCompare materials