How to compare demolition quotes without comparing apples and oranges

Why do demolition quotes for the same job differ so much?

Quotes for the same demolition differ mainly because they describe different jobs, not because one contractor is dearer than another. One may assume the slab stays, another that it goes; one may price a mini excavator for a tight access, another a standard machine that will not fit through the gate.

Other differences come from method and risk. A contractor that has seen the site, or detailed photos of it, can price propping a shared wall or protecting a neighbour's roof. One that has not seen it either adds a safety margin or leaves the item out and adds it later.

So the first job is not to rank the totals but to rebuild each quote into a common structure, point by point.

The eight points to line up before you look at the price

Use the same eight headings for every quote, and write down what each one says, or that it says nothing.

Only once the eight rows are filled in for every quote does it make sense to compare totals. The checklist version is in the post demolition quote comparison checklist.

How to compare scope and technique fairly

Scope and technique are where most of the price difference lives. If one quote includes removing the foundations and another stops at ground level, add the missing item to the cheaper quote mentally, or ask its author to price it, before comparing.

Technique deserves the same treatment. A mechanical demolition is faster on an open plot; a manual or combined one is slower but may be the only safe option next to neighbours, on a narrow street or inside a building. If one quote proposes machinery where another proposes hand work, ask each contractor why. The answer tells you who has understood the site.

When the quotes use different units, one per m² and another as a fixed total, convert them using the same area and scope. The guide why demolition cost per m² can mislead explains the traps, and the page demolition cost per m² shows when the unit is fair.

How to compare waste and asbestos handling

Waste is the line where cheap quotes most often cut corners, because the shortcut is invisible until later. A quote that says "rubble removal included" without mentioning sorting, an authorised manager or receipts gives you no way of checking what happens to the material, and no receipts means difficulty recovering the waste deposit.

Asbestos needs a specific answer. Only companies registered in the RERA may remove asbestos-containing materials, under a plan de trabajo approved by the provincial labour authority, and asbestos waste may never be mixed with the rest. In our jobs that work is done by a RERA-registered company working as our subcontractor. When comparing, check that each quote either prices the asbestos phase or explicitly excludes it, and who would carry it out. The page asbestos removal cost explains the factors, and our sister site covers the register itself in the RERA register explained.

Warning signs in a demolition quote

Some features of a quote are not proof of a problem, but they justify a closer look and a written question.

• No written scope, only a total and the word "demolition".
• No mention of waste destination or delivery receipts.
• Asbestos ignored on a building with a uralita roof, pipes or tanks.
• No protection measures for a building next to neighbours or a road.
• No VAT shown, or a request to pay without an invoice.
• A large upfront payment before any work or visible milestone.
• No exclusions listed, which usually means they will appear later as extras.
• A price far below the others with no explanation of how the saving is achieved.

Questions to send back to every contractor

Asking the same questions of every contractor puts the quotes on equal terms and shows you how each one works. Send them in writing so that the answers become part of the offer.

1. Have you seen the site or the photos of every side and the access? What did you assume about access?
2. Does your price include the ground slab and foundations? To what depth?
3. How will the waste be sorted, where will it go and will I receive the delivery receipts?
4. Is there asbestos in your assessment, and who removes it?
5. How will you protect the neighbours' property and the street?
6. What will the site look like on the day you leave?
7. Which costs are not included?
8. Which VAT rate applies, what are the payment stages and how are changes agreed?

For owners managing from abroad, add a ninth: how will you report progress? Photo updates at agreed points are the easiest way to follow a job without travelling.

Putting it together: choosing the right quote

The right quote is the most complete one at a price that makes sense for what it covers, from a contractor who has answered your questions clearly. That is often not the cheapest, but it is rarely the most expensive either.

Once you have filled in the eight points for each offer, the decision usually becomes obvious: one quote covers everything, one leaves out items you now know you will pay for later, and one is priced for a different job. The guide stage payments and written contracts for demolition covers the next step, turning the chosen quote into a written agreement.

To add our offer to your comparison, send the same information you sent the others through the demolition quote page or the quote form. Our quotes follow the eight points above, so they are easy to line up.

Comparing quotes when you live abroad

Comparing demolition quotes from another country adds two difficulties: you cannot easily check what each contractor saw, and the quotes may arrive in different languages and formats. Both can be managed with a little structure.

• Send everyone the same information. One set of photos, measurements and a written description of the job, shared with every contractor, makes the answers comparable from the start. The guide the information we need to quote your demolition lists what to include.
• Ask who saw the site. A quote based on a visit or a full photo set is more reliable than one based on a phone call. Note which quotes were prepared which way.
• Translate the scope, not just the total. If a quote arrives in Spanish, the scope and exclusions matter more than the headline figure. Ask for clarification in writing rather than relying on an automatic translation of key terms.
• Involve your técnico. Your técnico prepares the technical documentation and knows what the municipal file needs, so their opinion on which quote matches the project is valuable.
• Agree reporting. Ask each contractor how they will keep you informed during the works. Photo updates at fixed milestones work well when you cannot be on site.

Keep every answer in one e-mail thread per contractor. When you make a decision, that thread becomes part of the record of what was agreed.

Time zones and travel plans matter too. If you will be unreachable for part of the job, say so when you compare offers and ask each contractor how decisions would be handled in that period. A quote that comes with a clear answer to that question is worth more to an absent owner than a slightly lower one without it.