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Siding & Exterior Shell Calculator

Siding squares, house wrap, trim, soffit, fascia and gutters.

Walls

Wall perimeter in feet
Wall height in feet

Gables

Gable width in feet
Gable rise in feet

Soffit, fascia & gutters

Soffit run in feet
Soffit depth in inches
Fascia run in feet
Gutter run in feet
Waste allowance in percent
A square is 100 sq ft. Gable area is half the base times the rise. Doors count as 21 sq ft, windows 15 sq ft. Prices are U.S. big-box reference prices. Estimates only — not a quote.

Siding & Exterior Shell Calculator results

Estimated materials $8,956. Estimate only.

Enter your ZIP to re-price materials, or keep national averages.

Reviewed weekly · price book updated See what changed
Siding
16 squares
1,372 sq ft net of openings
Gutters
10 × 10 ft
5 downspout pieces, 50 hangers
Estimated total
$8,956

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Shopping list

ItemQtyUnitTotal
Engineered lap (square = 100 sq ft)16$420/sq$6,720
House wrap (9' × 150')2$165/roll$330
Starter strip152$1/ft$167
J-channel (12'6")18$10/stick$171
Outside corner post (10')4$16/ea$64
Siding nails (5 lb)2$42/box$84
Vented soffit panel147$3/sq ft$500
Fascia / drip edge110$4/ft$429
K-style gutter (10')10$13/ea$125
Downspout (10')5$14/ea$70
Downspout elbows8$7/ea$52
Hidden gutter hangers50$3/ea$160
Exterior sealant4$9/tube$36
Window / door flashing tape4$12/roll$48
Includes 10% waste allowance ($923)$8,956

Build summary

Wall area
1,368 sq ft
Gable area
196 sq ft
Openings removed
192 sq ft
Net area
1,372 sq ft
House wrap rolls
2
Soffit area
133 sq ft
Waste allowance
$923

Cut list & field notes

  • Wall courses — 16 @ squares (100 sq ft)

    Stagger butt joints at least two studs apart and keep a 3/16" gap at trim.

  • Gable rakes — 2 @ 28' base × 7' rise

    Cut one rake angle template and reuse it for every course.

  • Gutter runs — 10 @ 10' sections

    Slope 1/4" per 10 ft toward each downspout.

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Exterior takeoffs for siding crews

Measure once and get siding squares net of openings, wrap rolls, trim sticks, soffit area, fascia and gutter runs with a branded homeowner proposal in the same visit.

  • Takeoff priced to your ZIP in minutes
  • Cut list that trims the lumber order
  • Branded proposal and invoice PDFs
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Material and cost output is an estimate, never a quote. Permit content is guidance to verify with your local building department.