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Interactive cost calculators by trade

Estimate a planning range for common home-service projects using the national seed data. Pick trade, scope, size, quality tier, and state to see how the range moves.

37 trade calculators51 statesSeed-derived
systems

System count: 1-4 systems

Quality tier
Model estimate

$1,200-$2,700

Typical target: $1,625

Estimated range
Low: $1,200High: $2,700

Real permit data

Median $3,000 · typical $1,343$7,000 · from 225,182 real building permits (1987-2026)

See the Real Cost Index

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Assumptions

  • Plumber: seed anchor plumber / Install 50-gallon gas water heater.
  • Multipliers: trade 1.00x, scope 1.00x, quality 1.00x, size 1.00x.
  • No state selected: national seed average.

Browse calculators by trade

Each calculator uses a seeded trade anchor and deterministic multipliers for size, scope, quality, and state.

Essential systems

Exterior envelope

Outdoor & grounds

Interior repair

How these estimates are built

Every dollar baseline starts from data/seed/cost-guides-national.json. Trades without a direct seed row use the closest seeded anchor and a documented multiplier; no absolute dollar prices are hard-coded in the calculator model.

Emergency