How a demolition take-off should cite its basis

People search for demolition estimating software because quotes fail in the same way: a size, a mix, or a dump rate with no source. The number looks finished. It is a guess. This note is how to write a take-off a supervisor can defend.

The rule

If it is not written, it is not a fact. Every figure needs a source next to it. No source means it is assumed — say so out loud in the number, or do not send the number.

Known vs assumed — examples

• Known: length and width from a dimensioned drawing note you have in the job folder.
• Known: storey count from a walk with a written elevation.
• Assumed: mix copied from the last bungalow. Mark it assumed until this building is opened.
• Assumed: dump rate from last month’s invoice for a different site. Mark it assumed.
• Not a measurement: a phone photo. A photo is evidence that a wall exists. It is not a length.
• Not a measurement: ‘it looks about 18 metres.’

Checklist before the number leaves the cabin

• Footprint: source written (drawing / tape / instrument).
• Height or storeys: source written.
• Mix or material: known or marked assumed.
• Dump cost: written rate or marked assumed.
• Scrap steel: written basis or marked assumed.
• Anything blank: do not send. Fill it or say it is open.

What RazeForce does

DemTools is the field instrument: measure on site so the number leaves the plot with a basis. RazeForce is where that number sits with the rest of the job. We do not invent a rate for you.

What we will not do

• We will not design the charge, spacing, or the cut.
• We will not treat a pretty picture as a take-off.
• We will not turn an assumed mix into a known fact in the software.

Educational. Not a certificate. Not a live job. Follow the law and the people named on your site.