Demolition Estimating Guide
Selective and complete demolition estimating for renovation and remodeling projects.
Overview
Demolition estimating covers everything from selective interior demo for remodels to complete structural teardowns. Accurate estimates require assessing the scope of removal, identifying hazardous materials (asbestos, lead paint), planning for debris hauling and disposal, and understanding what needs to be protected or preserved. Labor is the primary cost driver, but disposal fees can be substantial depending on material types and local landfill rates.
Common Projects
- Kitchen and bathroom gut demolition
- Interior selective demolition for remodeling
- Complete structure demolition
- Concrete and asphalt removal
- Hazardous material abatement (asbestos, lead)
Pricing Factors
- Square footage and scope of demolition
- Type of materials being removed (drywall, tile, concrete, structural)
- Presence of hazardous materials (asbestos, lead paint)
- Number and size of dumpsters required
- Salvage and recycling requirements
- Protection of adjacent areas and finishes
Materials List
- Dumpster and roll-off container rental
- Plastic sheeting and dust barriers
- Protective floor covering (floor protection board, hardboard)
- Personal protective equipment (PPE)
- Dust control equipment (negative air, HEPA)
- Hand tools (sledgehammers, pry bars, reciprocating saws)
Estimating Tips
- Always inspect for hazardous materials before bidding — asbestos and lead abatement require licensed contractors and dramatically increase costs.
- Price dumpster costs separately and estimate conservatively — demolition always generates more debris than expected.
- Include dust containment and floor protection costs for selective demo in occupied or finished spaces.
- Factor in labor for careful disconnection of plumbing, electrical, and HVAC before demo begins.
- Add time for sorting recyclable materials if the project or jurisdiction requires construction waste diversion.
Estimate Demolition Jobs in ContractorIQ
Snap a photo of the job or describe it, and ContractorIQ itemizes the materials and labor, priced for your market.
FAQs
Common questions about demolition estimating
Demolition is typically priced per square foot at $2-$8 for interior selective demo (drywall, flooring, cabinets) and $4-$12 per square foot for structural demolition. Complete building demolition is often priced as a lump sum. Disposal costs ($400-$800 per dumpster) are a significant additional expense.
A complete demolition estimate includes labor for removal, equipment rental, dumpster and disposal fees, dust containment and protection, utility disconnection, hazardous material testing or abatement (if applicable), and a contingency for unexpected conditions (10-20%). Always specify exactly what is being removed and what is being preserved.
A standard 20-yard dumpster holds approximately 400-500 square feet of interior demolition debris. A 30-yard dumpster is better for larger projects. For a full kitchen demo, plan on one 20-yard dumpster. For a whole-house gut, plan on 2-4 dumpsters depending on the home's size. Always overestimate rather than underestimate.