Guides
The 16 calculators on this site each show their own formula, assumptions and worked example. These guides cover the parts that sit underneath all of them — the takeoff method itself, and the reference figures the calculators apply on your behalf.
THE METHODHow to Estimate Materials for a Home ProjectThe five-step takeoff method behind every estimate on this site: measure the real surface, convert units, divide by coverage, add waste, round up to retail packaging.Updated July 25, 2026
REFERENCEWaste Factors Explained: Rates by MaterialTypical waste percentages for flooring, tile, drywall, shingles, concrete, pavers and lumber — what drives each figure, and why compaction is not waste.Updated July 25, 2026
COST GUIDEBasement Waterproofing Cost: Priced by the Linear FootPer-linear-foot rates for every waterproofing method, the perimeter formula behind contractor quotes, a priced 1,000 sq ft example — and the under-$1,500 fixes to do first.Updated August 15, 2026
COST GUIDERoof Replacement Cost: What a New Roof Runs by the SquarePer-square rates for asphalt, metal, tile and slate, the pitch arithmetic that turns a footprint into squares, and a 2,000 sq ft house priced line by line — materials split from labor.Updated August 17, 2026
COST GUIDEConcrete Leveling Cost: Mudjacking vs Foam, PricedMudjacking at $3–$8 per sq ft, polyurethane foam at $5–$25, replacement at $8–$18 — a priced 240 sq ft driveway example, and the cases where lifting a slab is the wrong fix.Updated August 17, 2026Apply it
Or go straight to a calculator
Every tool below applies the method and the waste factors from the guides above, and shows its working.
Concrete & LandscapingSlab, patio, and driveway takeoffs that come back as cubic yards, bag counts, base gravel and bedding sand — never just one line item.4 CALCULATORSBuilding & ExteriorRun lengths and footprints in; posts, rails, pickets, squares and bundles out — priced low / typical / high with labor broken out.6 CALCULATORSInterior & RemodelingRooms in; gallons, sheets and boxes out — plus itemized kitchen, bath and basement budgets scaled to scope and finish level.6 CALCULATORS