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The Quote Was 11% Lower. The Project Wasn't.
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Why Unit Price Is the Wrong Starting Point
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The Deep Cause: We Don't Specify the Product Tightly Enough
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The Hidden Costs That Actually Hit
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Why the 'Cheap Material' Trap Is Backwards
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The Day the Spreadsheet Caught On Fire
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The Cost of Not Changing
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Here's What You Need to Know
The Quote Was 11% Lower. The Project Wasn't.
I'm the procurement manager at a 42-person design-build firm. I've managed our materials budget of roughly $210,000 annually for six years, negotiated with more than 30 vendors, and logged every purchase order in our project cost system. That last part matters, because it's how I know exactly where the money goes.
When we specified the surfaces for a medical office lobby, one of my first tasks was to compare material quotes. The Daltile White Ice Quartz quote was mid-pack. Another supplier came in 11 percent lower on the material line. I almost told the designer to switch. Then the project manager asked a question that should be standard but isn't: 'Is that including fabrication and installation, or just the material?'
It was just the material. That simple question surfaced the real issue: we were treating tile cost as if it ended at the price per square foot. It doesn't. This article is about the total cost of ownership, and how I stopped getting burned by the gap between the quote and the real cost.
Why Unit Price Is the Wrong Starting Point
The obvious problem: everyone compares the line item. 'This slab is cheaper per square foot, so let's use it.' That approach ignores the items that can make up 30 to 50 percent of the final cost.
Total cost of ownership, or TCO, includes more than the material. For tile and quartz projects, I now include:
- Material cost per square foot, plus waste and breakage
- Fabrication, edge work, and seam treatment
- Substrate prep and surface repair
- Adhesives, grout, sealants, and adhesive remover when prep or rework is needed
- Labor hours for installation
- Rush freight or double freight if mistakes happen
- Cleanup and disposal
Once you list it, it seems obvious. The problem is that people compare only line one. Vendors know this. Some quote low on material to win the order, knowing they'll make money on fabrication and ancillary fees later. I'm not saying that's malicious. It's just how the industry works.
The Deep Cause: We Don't Specify the Product Tightly Enough
'Daltile White Ice Quartz' is not a complete specification. Is it a 2-centimeter slab or 3-centimeter? What edge profile? What finish? What substrate is approved? Where do the seams run?
This is where the Daltile products catalog becomes a cost-control tool. The catalog doesn't just show color; it lists actual product data. When I specify from the catalog, I get a consistent reference to communicate exact product dimensions, finish, and part number. That eliminates ambiguity. Then every vendor quotes the same thing. You can't compare a quote with a custom edge profile against one with a basic square edge and call one 'cheaper.' That's not a price difference, it's a scope difference.
What most people don't realize is that the person who writes the vaguest request gets the widest range of quotes. That range isn't market variability. Each vendor is guessing what you actually want, and they guess differently.
The Hidden Costs That Actually Hit
Let me walk through our specific overrun. Our budget was $14,200 for a small commercial tile and quartz installation. Final invoice: $17,500. That 23 percent gap is not unusual. The breakdown:
Adhesive remover and surface prep. The original wall had old mastic residue. We didn't budget for adhesive remover, scraping, a second skim coat, and the labor. It was $680 we never saw on the first quote. A bottle of adhesive remover costs around $16, but the labor to use it isn't $16.
Waste and repeat freight. Geometric floors mean cuts. The 10 percent waste allowance was eaten by one wall layout error. The crew used up the extra material on a section that had to be redone, and then we ordered more Daltile tile and paid freight twice.
Time. Everyone forgets time. Every change order required site visits, emails, and spreadsheet updates. I don't bill my hours to the project, but the delay pushed our crew off schedule.
Why the 'Cheap Material' Trap Is Backwards
People think cheap materials cost more because you get what you pay for. Actually, the causation usually runs the other way: expensive mistakes happen when you choose based on material price alone. The price difference between two quality products is often smaller than the cost of one installation mistake.
This is where I changed my mind. I used to believe the smartest move was to get five quotes and take the lowest line item. Over time, I've found a better approach: get three detailed quotes and ask each vendor what isn't included.
The Day the Spreadsheet Caught On Fire
This may sound small, but it's the moment my approach changed. I was on the job site in July, wearing a white tank top because the warehouse AC was down and the temperature was 94 degrees. I was trying to update the cost tracker on a laptop that was not cooperating. The app froze. I actually searched 'how to force quit on windows' while sweating through every budget line I'd logged. Ctrl+Alt+Delete doesn't end a hung app; you need Task Manager. My assistant had to show me.
In that moment, I realized I'd been doing the same thing with project budgets: willing to close one window, but not the underlying problem. I was so deep in unit-price comparison that I'd lost sight of the total project cost. The spreadsheet crash wasn't the bug. My cost model was.
The Cost of Not Changing
Sticking with 'who's cheaper per square foot' has a measurable cost:
- Rework risk. Once the slab is fabricated with the wrong edge profile, you pay for material and labor again. I watched a colleague spend $1,200 on a redo because the edge profile didn't match the cabinet reveal. The original quote didn't include the edge type.
- Change orders. Undefined scope means the installer defines it later, at a higher rate.
- Vendor churn. Constantly switching to save 2 percent burns trust. A vendor who knows you is more likely to flag a conflict before it becomes a change order.
I have mixed feelings about 'relationship' arguments in procurement. On one hand, a 2 percent saving can be real money. On the other, I've been the person chasing a three-week delay for a small discount. The delay cost us more than the discount. The math was invisible at bid time.
Here's What You Need to Know
So what do I actually do now?
- Use the Daltile products catalog to lock down the exact product. Don't just specify 'Daltile White Ice Quartz.' Note the finish, slab size, edge profile, and approved substrate. That gets you apples-to-apples quotes.
- Require itemized line items. Template, fabrication, install, waste, cleanup. If a vendor won't break down the quote, that's a red flag.
- Calculate TCO before you compare anything. I use a simple sheet: unit price plus fabrication, accessory materials, waste, estimated rework risk, and my team's time. It takes 45 minutes and has saved far more than that.
- Adjust your waste allowance for the layout. Long runs, patterns, and diagonal layouts need around 15 percent. I used to use 10 percent and paid the difference.
Does this mean you should never choose the lower unit price? No. It means you should know what that lower unit price is buying. And no, this system isn't glamorous. But it turned a 23 percent overrun into a 4 percent contingency on our last three projects.
About that spreadsheet crash: I learned how to force quit on Windows the hard way. The useful lesson was simpler. If the total cost isn't in your spreadsheet, the spreadsheet is just a price list.