Flooring invoices: a photo can’t show how much

A unit turns over and the flooring invoice arrives: “replace carpet and pad, 62 square yards”, with a photo of the stained carpet and a photo of the new one. Both photos may be real. Neither says how much carpet was laid, and on a flooring invoice the quantity is what sets the price. A photo shows that a floor changed. It doesn’t show 62 yards. This piece covers what the photos can show, why a fair quantity usually runs above the size of the room, and how to check the number. It is not legal advice.

Start with your own arithmetic

One square yard is nine square feet. Multiply each room’s length by its width, add the rooms, and compare the total with the invoice. Here is a made-up example:

• Bedroom one: 10 by 12 feet, 120 square feet.
• Bedroom two: 11 by 11 feet, 121 square feet.
• Living room: 12 by 16 feet, 192 square feet.
• Total: 433 square feet, or about 48 square yards.

The invoice says 62 square yards, which is 558 square feet. That is about 29 percent more than the rooms. It isn’t proof of anything yet, for the reason in the next section. It is a question to ask, and you can only ask it once you have done the sum.

Check the unit as well. A line that says “62” without saying yards or feet can’t be checked at all, and the two differ by a factor of nine.

Why a fair number is bigger than the room

A contractor who bills more material than the floor measures is not necessarily padding the job. Flooring comes in fixed sizes and rooms don’t.

• Carpet comes in roll widths. Twelve feet is the common residential width, according to a consumer flooring guide we read. A room wider than the roll needs a seam and a second piece, and the rest of that piece may be left over.
• Trimming takes material. The Carpet and Rug Institute’s residential installation standard, CRI 105, says carpet shall be cut “allowing at least 3 inches along each wall for trimming”. A room exactly twelve feet wide therefore doesn’t fit neatly on a twelve-foot roll.
• Seams and pile direction limit the cuts. CRI 105 says to keep seams to a minimum and that adjacent pieces of the same carpet are required to have the same pile direction unless otherwise specified, so offcuts can’t always fill a gap.
• Patterns cost more. The same standard notes that “patterned carpet requires additional material for proper pattern matching”.
• Plank comes in cartons and gets cut. One consumer guide suggests allowing 5 to 7 percent for simple rectangular rooms, 8 to 10 for irregular ones, and 10 to 15 for diagonal or herringbone layouts. Another suggests 3 to 5 percent for simple carpet jobs and 8 to 15 for patterned or complex ones.

Those percentages are guides, not a standard. We didn’t find an industry rule for the right allowance, and CRI 105 doesn’t set one. Carpet can honestly run above them when a room’s width and the roll don’t suit each other. So the useful question isn’t “is this over 10 percent?” It is “show me how you got this number”.

What the photos can show

• That a floor changed. A before and an after of the same room, from the same corner, show new material went down.
• Which rooms were done. If the invoice bills three rooms, there should be pictures of three rooms, with something in each that ties it to this unit.
• Sometimes what was installed. A clear shot of the roll or carton label can name the product.
• Sometimes when. If the file still carries the camera’s own clock, the date should fall on the job.

What they can’t

• The quantity. Nothing in a picture of a finished floor gives you square yards. A closet may or may not have been done, and the camera usually can’t tell you.
• What was bought versus what was laid. Leftover material isn’t in the after photo.
• The grade. Two carpets at different prices can look the same in a phone picture. That is why the label matters more than the room shot.
• What is underneath. A photo of finished carpet doesn’t show whether the pad was replaced as billed. A photo during the job, with the old carpet up, can.

Checks before you pay

1. Ask for a measurement by room, with the unit stated. CRI 105 says correct measurements and a detailed diagram are essential before an installation can be planned or estimated, so a carpet company should have them.
2. For carpet, ask for the seaming diagram. It is the honest explanation for a quantity above the room size. If the contractor can show which piece went where, 29 percent over may be exactly right.
3. Measure one room yourself. You don’t need to measure them all. If one room’s figure is wrong, ask about the others.
4. Compare same-plan units. If you manage several units with the same floor plan, this is your strongest check. The same rooms should come to about the same quantity, though a different roll width or layout can move it. Keep earlier invoices filed by unit, and compare this one with the last install in this unit too.
5. Get materials, pad, labor, removal and haul-away on separate lines. A single lump sum can’t be compared with anything. Haul-away may have its own paper trail: the dump ticket.
6. For plank, do the carton sum. Cartons billed times the coverage printed on the carton gives the material bought. Compare that with the room total, and ask what happened to anything left over. If you paid for it, it may be worth keeping for a later repair.
7. Ask for a photo of the label on the roll or carton, showing the product named on the invoice.
8. Ask for the original photo files, not pictures pasted into an invoice PDF, which have usually lost their camera record. Why, and how to ask for the originals.
9. Drop this job’s photos in with the company’s earlier ones. The checker marks any two files in the same batch that are the same file, even under different names. A “finished floor” photo reused from another unit shows up that way, if it is the same file. A new photo of some other floor won’t, which is why the measurements matter more than the picture.

If you charge any of it to the tenant

The invoice that was good enough to pay may not be good enough to deduct from. If a tenant damaged one room, a whole-unit lump sum leaves you unable to show what that room cost.

Colorado is the sharpest example. Under C.R.S. 38-12-103(11)(a), keeping deposit money to replace carpet throughout a unit needs “substantial and irreparable damage to the carpet that exceeds normal wear and tear and did not preexist the tenancy”. Replacing a portion is allowed when that portion has such damage. Under (11)(c), a landlord “shall not deem carpet to be substantially and irreparably damaged if the carpet has not been replaced with new carpet within ten years” before the lease ended or the premises were surrendered. Nevada lets a landlord claim “only such amounts as are reasonably necessary” for its listed purposes, which include repairing damage caused by the tenant other than normal wear (NRS 118A.242(4)).

So a by-room invoice does two jobs: it lets you check the quantity, and it lets you separate one burned room from the rest of the unit. How the carpet’s age affects the amount is a separate question, covered in carpet damage photos and the carpet’s age.

Whether someone used AI on the photos

A picture of a clean new floor is easy to generate now, and some generators write a mark into the file saying so. The checker reads those marks in photos, and the notes some phone editors leave when generative AI was used to alter a photo. A file with no such mark is not proven real. Most fakes and most genuine photos look the same to a file reader once they have been through a chat app or a screenshot. And for this kind of job, even a perfectly genuine photo doesn’t say how many yards went down.

The limits, stated plainly

• A quantity above the room size is not evidence of fraud. Roll widths, trimming, seams and patterns can all explain it. Our 62-yard example is made up, and we don’t know how often flooring invoices are inflated.
• The roll width and the waste percentages come from consumer flooring guides at flooringclarity.com, read in November 2026. They aren’t an industry standard. We could not find a manufacturer’s published waste figure.
• The installation points are from CRI 105, the Carpet and Rug Institute’s residential standard (2019 copyright), read in November 2026. It covers how carpet should be installed. We did not find a line in it requiring a contractor to hand a customer the diagram, so treat that as something you ask for, not something you are owed.
• The Colorado lines are from the 2026 Colorado Revised Statutes, and the Nevada line is from the Nevada Legislature’s current chapter 118A, both read in November 2026. Colorado’s subsection (12) excludes some mobile home rentals from (11). We did no case-law research, and other states are not covered here.
• A photo with no camera record is not a fake. Text messages, chat apps and many portals remove the record from genuine photos every day.
• Our checker gives no confidence score and does not judge a picture by looking at it. It reads what is in the file, in your browser, and uploads nothing. A file with no AI marker is not proven real.
• This is not legal advice.

Related: what a contractor’s “after” picture actually proves, and AI receipts on contractor invoices.

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