Demolition Cost Calculator — Complete Guide
Use this free demolition cost calculator to instantly estimate how much it costs to demolish a house, garage, shed, commercial building, pool, or interior space. Enter your structure type, square footage, number of stories, and demolition method to get a full cost breakdown including labor, debris hauling, and permit fees.
How Much Does Demolition Cost? (2024 National Average)
Demolition costs vary widely by structure type and size. Here are the national average demolition costs per square foot in the United States:
| Structure Type | Cost per Sq Ft | Typical Total Cost |
|---|---|---|
| Wood-Frame House | $4 – $8 / sq ft | $8,000 – $25,000 |
| Masonry / Brick House | $6 – $12 / sq ft | $15,000 – $45,000 |
| Detached Garage | $3 – $6 / sq ft | $1,500 – $8,000 |
| Commercial (Light) | $6 – $12 / sq ft | $20,000 – $80,000 |
| Commercial (Heavy / Concrete) | $10 – $18 / sq ft | $50,000 – $200,000+ |
| Interior Gut-Out Only | $2 – $4 / sq ft | $3,000 – $15,000 |
| Shed or Small Outbuilding | $2 – $4 / sq ft | $500 – $4,000 |
| Swimming Pool (fill-in) | $6 – $15 / sq ft | $4,000 – $20,000 |
Costs include labor only. Add $400–$700 per 30-CY dumpster load for debris hauling and $300–$1,000 for a demolition permit.
How to Calculate Demolition Cost
The calculator uses this industry-standard formula:
1. Identify Structure Type → Select the closest match to your building.
2. Measure Total Footprint Area (sq ft or sq m)
3. Enter Number of Stories (debris volume scales with height)
4. Choose Demolition Method:
- Mechanical (excavator/backhoe) — fastest, lowest cost per sq ft
- Manual (hand tools, sledgehammer) — 65% more labour-intensive
- Selective (deconstruction for salvage) — 40% premium, preserves materials
5. Labor Cost = Area × Base Cost/SF × Method Multiplier
6. Debris Volume (cu yd) = Area × Debris Factor × Stories ÷ 27
7. Dumpster Loads = Debris Volume ÷ 30 CY (capacity per roll-off)
8. Haul Cost = Number of Dumpsters × $550 per load (avg)
9. Total Cost = Labor + Haul + Permit Fee
Demolition Method Comparison
| Method | Description | Cost Multiplier | Best For |
|---|---|---|---|
| Mechanical | Excavator, backhoe, bulldozer | 1.0× (baseline) | Full demolition of entire structure |
| Manual | Hand tools, sledgehammers | 1.65× | Tight urban lots, confined sites |
| Selective / Deconstruction | Careful material salvage | 1.40× | Harvesting lumber, brick, fixtures for resale |
Debris Estimates by Structure Type
A common question is: "How many dumpster loads does a house demolition produce?" Here are typical estimates:
| Structure | Approx. Debris per 1,000 Sq Ft | 30-CY Dumpsters Needed |
|---|---|---|
| Wood-Frame House (1 story) | ~130 cu yd | ~4–5 loads |
| Masonry House (1 story) | ~200 cu yd | ~7 loads |
| 2-Story Wood Frame | ~260 cu yd | ~9 loads |
| Interior Gut-Out | ~55 cu yd | ~2 loads |
| Detached Garage | ~95 cu yd | ~3 loads |
| In-ground Pool | ~90 cu yd concrete | ~3 loads |