Demolition Estimating Services
247 Estimation provides demolition estimating services that break a teardown into priced parts. Every output ships in 2 to 4 business days. It includes a marked-up plan set, a sorted spreadsheet, and tonnage numbers for every load leaving the site. Send your drawings and documents to get a bid built on measured amounts, not a round-number guess.
What a Demolition Estimate Measures
A demolition estimate starts with three numbers. First, the total volume of what comes down. Second, the crew and machine hours needed to bring it down. Third, the combined price for labor, hauling, and dump fees. These numbers come from structural drawings, site surveys, and hazmat reports. Every part gets checked against the phasing plan before the first truck rolls in.
Four project types make up most of the work:
Complete Building Teardown:
All walls, floors, roof, and below-grade elements cleared as one package
Selective Interior Strip-Out:
Walls, ceilings, flooring, and MEP pulled out while the shell stays up
Structural Modification:
Partial cutting of framing, slabs, or bearing walls with shoring and engineering sign-off
Site Clearance:
Pavement, curbing, fences, retaining walls, and buried utilities within the footprint
Each type calls for different machines, crew sizes, and waste paths.
Structure Types and How They Shift the Estimate
The material holding a building up sets the method, the hours, and the machine class. Five types cover most projects.
Wood-Frame Structures
Wood-frame buildings run $4 to $8 per square foot for machine teardown. Most single-family homes and low-rise apartments land here. Mixed wood goes to landfill as construction waste, which carries a higher tipping fee than sorted loads.
Masonry and Brick Structures
Masonry runs $7 to $12 per square foot. Block and brick walls are heavier per foot than wood framing. That means more truck trips and a bigger landfill bill. Older masonry may hold lead-based mortar that needs testing before machines move in.
Reinforced Concrete Structures
Concrete runs $10 to $18 per square foot. Slabs call for breakers, decks call for pulverizers, and below-grade walls call for shears to cut rebar. Concrete weighs about 150 pounds per cubic foot, so hauling drives the largest single expense on these projects.
Steel-Frame Structures
Steel-frame buildings often land at $2 to $4 per square foot after scrap credits. Steel brings $150 to $350 per ton at current scrap rates. A 200-ton building can return $30,000 to $70,000 in salvage. That value cuts the hauling and dump fees total inside the bid. High-reach excavators with magnet heads handle most multi-story steel work.
Hybrid and Multi-Material Structures
Most commercial buildings mix two or more of the above. Steel columns carry concrete decks. Masonry curtain walls wrap a steel skeleton. Each layer needs its own method and its own waste path in the takeoff. One flat per-square-foot number hides the real price split between machine work, sorting, and separate dump-fee streams.
Equipment That Drives the Daily Rate
Machine choice sets the day-rate on the labor total. The takeoff pairs the right machine to the right phase.
Implosion fits a small set of large buildings in tight urban settings. Controlled charges bring the building down in a planned sequence. Permitting, vibration monitoring, and dust controls push this method well above standard teardown on a per-square-foot basis. Most projects never call for it.
- Hydraulic Excavators (20 to 80 ton): Main machine for most teardowns. Swapping between bucket, breaker, shear, and pulverizer keeps one machine working across mixed surfaces.
- High-Reach Excavators: Used on multi-story buildings where a standard boom cannot safely reach upper floors. Carry a higher day-rate than standard units.
- Skid Steers and Loaders: Handle interior targeted work, debris sorting, and loading into haul trucks. Common on smaller sites.
- Crushers and Concrete Processors: On-site crushing cuts hauling volume and produces recycled fill for backfill, which offsets tipping fees.
Scope Items on a Demolition Takeoff
The takeoff sorts the job into 10 measured parts:
- Superstructure: Walls, roof systems, and floor slabs, sized by area and building type
- Substructure: Footings, grade beams, basement walls, and slabs, sized by volume
- Interior Selective: Partitions, ceiling grids, floor finishes, and fixed units, counted per piece or area
- MEP Systems: Ductwork, conduit, piping, fixtures, and machine units, counted per piece and linear foot
- Hazmat Abatement: Asbestos, lead paint, PCBs, and bad soil, sized by affected area
- Utility Disconnection: Electric, gas, water, sewer, and telecom, counted per service
- Debris Hauling: Loads by debris type, with tonnage figured per the volume method below
- Salvage and Recycling Credits: Scrap steel, copper, and reusable parts, sized by weight and current market return
- Site Grading: Rough grade, backfill, and final condition per the owner’s needs
- Permits and Testing: Environmental survey, engineering review, and permit fees by area
Each part carries its own unit. Lumping them together hides the price drivers that shape whether a bid wins or loses.
Debris Volume and Disposal Calculation
Disposal is the most underestimated part of a demolition bid. A miss of even 20 cubic yards of concrete adds thousands in surprise landfill fees.
The math follows a fixed path. Take the building’s floor area and multiply it by the debris factor for its type: 3.0 cubic feet per square foot for concrete and masonry, 4.5 for wood-frame. Turn the total into truckloads using the hauler’s rated capacity. Apply the local tipping fee per ton for each debris type. Sorted loads of clean concrete often qualify for a lower fee or a scrap credit. Mixed loads always pay the highest rate.
Splitting waste on site into concrete, metal, wood, and general bins cuts the per-ton bill. A priced estimate that separates sorted from mixed streams gives the contractor a lower net total.
Cost Variables That Move the Bid
Three things drive most of the gap between two bids on the same building. These are building type, hazmat presence, and site access.
Home vs Commercial Pricing
Home teardown runs $5 to $17 per square foot, with most jobs landing between $6,000 and $25,000 total. That range folds in permits, utility cuts, hauling, and grading on top of the $4 to $8 machine base. Commercial teardown runs $4 to $25 per square foot. Selective strip-outs on commercial estimation projects add 25% to 50% above base teardown.
Hazmat Cleanup Costs
Asbestos runs $2 to $25 per square foot of affected area. Lead paint runs $8 to $15. Buildings put up before 1980 carry the highest odds of both. A pre-teardown survey, usually $1,500 to $5,000, pins down the hazmat figure before it catches the bid off guard.
Regional and Access Factors
Dense urban sites with tight entry and high tipping fees run above suburban lots. California and New York carry some of the highest fees in the country. Inland states like Texas and Ohio usually run 10% to 15% below coastal numbers.
Insurance and Bonding
Demolition contractors carry general liability, pollution liability, and often a performance bond. Leaving bonding out of a bid that requires it misses the real total. Most public and many private contracts demand a trade-specific bond before work starts.
Mechanical Teardown vs Deconstruction: Estimating the Difference
Two paths exist for bringing a building down. Each one shapes labor, timeline, and dump fees in a different way.
| Factor | Mechanical Teardown | Deconstruction |
|---|---|---|
| Method | Heavy machines bring the building down in bulk | Hand work takes it apart piece by piece to save usable parts |
| Speed | Faster per square foot on most projects | 2 to 3 times more labor hours than machine work |
| Cost per SF | Lower upfront, higher dump fees | Higher labor, offset by salvage returns and lower landfill fees |
| Salvage Revenue | Limited to bulk scrap metal after sorting | Recovers hardwood, fixtures, timber beams, copper, and steel at higher piece value |
| LEED Eligibility | Needs post-teardown sorting to earn waste diversion credit | Supports LEED v4.1 credit by diverting 50% or more of debris from landfill by weight |
| Best Fit | Open lots, tight timelines, low-value buildings | Urban infill, high-value parts, green targets, tax credit eligibility |
Concrete makes up about 40% of demolition waste by volume, metals 15%, and wood 10%. Showing the gross clearing price next to the net number after salvage and scrap offsets gives the owner the full picture.
CSI Classification and Trade Placement
Demolition sits under CSI Division 02, Existing Conditions, section 02 41 00. Selective interior work, hazmat cleanup, and site clearance each carry their own subsection. Keeping each part in the right division stops overlap with concrete estimation or earthwork when several trades share one bid package.
Regulations That Shape the Takeoff
Permit rules and hazmat laws draw the boundaries before a single wall gets marked.
NESHAP: Requires an asbestos check on business and public buildings before any demolition permit gets filed. The results set the hazmat figure in the estimate.
OSHA Subpart T: Covers engineering surveys, utility clearance, floor-by-floor staging, and bracing during partial work. Meeting these rules adds crew hours and machines to the labor total.
State and Local Permits: Most areas require a separate demolition permit. Fees run $100 to $10,000 based on building size and historic status. Some cities require 10 to 30 days’ advance notice.
Pre-Demolition Engineering Survey: A licensed engineer reviews the building, maps load paths, and flags anything that needs shoring or staged work.
Utility Verification: Power, gas, water, sewer, and telecom lines must be capped and signed off before work begins. Disconnection adds $5,000 to $14,500 when no rebuild is planned within 2 to 5 years.
Why Contractors Choose 247 Estimation
Trade-Focused Teams
Every demolition takeoff goes to a team member who handles this division daily. The output matches the way a demolition sub puts a bid together in the field.
Digital Plan Measurement
All dimensions come from Planswift or Bluebeam markups. No hand scaling, no rounding. Every number traces to a spot on the plan.
Disposal Built Into Every Line
Tonnage, tipping fees, and sorted vs mixed pricing each sit on their own row. The final number shows the gross total and the net total after salvage offsets, side by side.
Fast Turnaround and Free Updates
Standard delivery runs 2 to 4 business days after documents arrive. Rush options cover tighter windows. Addenda and changes get folded in at no extra charge on open orders.
Who Uses a Demolition Takeoff
Demolition subcontractors, general contractors, developers, homebuilders, hazmat advisors, architects, insurance adjusters, and government agencies all put this output to work.
- Subcontractors plug the measured amounts into a bid that covers every clearing method and machine shift.
- General contractors add this trade to a multi-trade package and keep clearing figures visible in the full budget.
- Developers set teardown vs renovation side by side during early planning using matched line items.
- Homeowners and builders set a firm clearing budget before new construction begins, rather than guessing from a lump quote.
- Environmental advisors pull the hazmat section to build cleanup bids and rules filings.
- Architects test whether a renovation budget can carry the targeted work or whether full clearing and rebuild is the better path.
- Adjusters confirm damage claims on insured buildings against an itemized breakdown.
- Government agencies use documented takeoffs to meet buying rules and audit needs on public-funded work.
How 247 Estimation Builds a Demolition Takeoff
The process runs through five stages. Each one feeds the next.
Document and Survey Review
The team goes through structural drawings, site plans, and any hazmat or hazmat reports. This step confirms what comes down, what stays, and what needs licensed abatement.
Quantity Measurement
Every building part, site feature, and MEP run gets measured in Planswift or Bluebeam. Each number links to a marked spot on the drawing set.
Disposal and Hauling Calculation
Debris volume gets figured out by building type using the cubic-feet-per-square-foot method. Truck loads, tipping fees, and scrap credits each appear on their own row.
Local Data Assignment
Every measured quantity gets a rate tied to the project’s ZIP code. Machine, crew, hauling, and dump fee numbers come from RSMeans and current regional data.
Verification and Delivery
The finished work gets checked against past project data and the original documents. This step catches missed parts or a mismatch with the hazmat report. 247 Estimation runs this review on every job before it goes out.
Errors That Inflate a Demolition Bid
Flat-Rate Debris Pricing: Treating all waste as one mixed load instead of splitting concrete, metal, and wood into sorted streams overpays on tipping fees across the board.
Bundled Hazmat and Teardown: Mixing hazmat work into the machine total hides a task that needs licensed crews, its own insurance, and a separate waste path.
Missing Insurance and Bonding: Leaving pollution liability or a bond out of overhead misses the true bid on business and public work that requires both.
Flat Machine Assumption: Putting one day-rate on every phase ignores the different units that slab breaking, steel cutting, and site grading each demand.
Pre-Submission Quality Checks
Four reviews catch most errors before a demolition bid goes out. Each one holds a takeoff number against its source document.
- Environmental survey vs hazmat figure to confirm every flagged item appears in the estimate
- Floor area vs debris formula to make sure the tonnage matches the building’s actual makeup
- Phasing plan vs machine list to confirm the right unit sits on the right phase at the right rate
- Bond and insurance needs vs overhead to make sure the bid carries every rule’s cost the contract asks for
Every review runs on every job before delivery.
Get Your Demolition Estimate Built on Real Quantities
Send your drawings, survey reports, and documents to receive a demolition estimate broken into measured parts, dump fees math, and salvage credits. 247 Estimation checks every output against past project data before it ships. Reach the team through the contact page or ask for a free sample to see the output format before placing an order.