The short answer
There is no single going rate for warehouse floor cleaning in Houston, and a rate quoted without seeing the floor is an estimate at best. Machine scrubbing is priced per job, and the range is wide: published industry figures run from a few cents per square foot for very large floors on frequent recurring programs to well over twenty cents per square foot for small, heavily soiled, one-time jobs. Both figures are accurate for different floors.
What you can count on is the shape of the pricing. Bigger floors cost less per square foot. Recurring visits cost less than one-time deep scrubs. Heavy soil costs more than dust. And a quote that leaves any of that out is not a quote you can compare.
What actually sets the price
1. Square footage
The biggest factor, but not a linear one. Every job carries the same fixed costs regardless of size: the walkthrough, the setup, the edge work, and the photos at the end. On a 10,000 square foot floor those fixed costs are most of the bill. On a 100,000 square foot floor they are a rounding error, and nearly all of the bill is the scrubbing itself.
2. Open floor vs. racked floor
Open concrete costs the least per square foot to clean. Racking adds edge work along every upright and hand-finishing in the corners of every aisle. The square footage is the same; the hours are not.
3. Soil load
Dust is the fastest soil to remove. Forklift tire marks need chemistry made for rubber and more time on the floor, and oil-soaked shop concrete needs a degreaser and more time still. A floor with drywall dust from construction takes extra dry pickup first. Tell the contractor what is on the floor, or send a photo of the worst area. It changes the number more than anything except size.
4. First scrub vs. maintenance
A floor that has never been machine-scrubbed is giving up years of buildup on the first visit. It takes longer and uses more chemistry than any visit after it. That first scrub is the most expensive visit the floor will ever have. Every visit after it is cheaper, because there is less to remove.
5. Frequency
A standing program, weekly to quarterly, gets a fixed per-visit price below the one-time rate. The visit is scheduled in advance, the floor never returns to the “needs a deep scrub” state, and the cost becomes a predictable line item. For a distribution floor with daily forklift traffic this is usually the cheapest way to own a clean floor over a year.
6. Timing
Nights and weekends should be normal hours for a floor-scrubbing company, not a surcharge. The windows you can give the contractor, between shifts, overnight, a shutdown weekend, shape the schedule more than the price.
Why the per-square-foot rate falls with size
Think of the job as two parts: a fixed cost to show up and set up, and a variable cost per square foot of scrubbing. On a small floor the fixed part dominates, so the effective rate per square foot is high. As the floor grows, the fixed cost is spread across more feet and the effective rate falls toward the variable cost alone. That is why a 100,000 square foot shell can be quoted at a small fraction of the per-foot rate of a 10,000 square foot shop, and why a contractor who quotes both at the same rate is losing money on one or overcharging on the other.
One-time vs. recurring: the math of soil
A one-time deep scrub removes everything that has accumulated since the last one. If that is five years, the job is slow and the price reflects it. A recurring program removes a week or a month of soil per visit, so each visit is short. The per-visit price is lower, and over a year the floor is clean every day instead of clean one day a year.
The comparison most facility managers find useful: the first deep scrub is the cost of getting the floor back. The program is the cost of keeping it.
What a good quote includes
A quote you can actually compare has one number and lists what is inside it:
- A walkthrough or photo review and a written scope of which areas are included
- Equipment, brushes, and pads matched to the floor type
- Chemistry matched to the soil (tire-mark cleaner, degreaser, or neutral cleaner)
- After-hours, weekend, or between-shift scheduling
- Disposal of recovery water to a sanitary drain on site
- Edge and detail work along walls, racking, and fixtures
- Before-and-after photos
Then ask what it does not include. Common exclusions worth knowing about: moving product or pallets, mechanical removal of cured adhesive or heavy mortar, strip-and-wax on VCT, and anything above the floor.
Red flags
- A per-square-foot rate quoted without seeing the floor. It will change once the floor is seen.
- “Plus conditions.” That line is where the surprise on the invoice comes from.
- An after-hours surcharge. Nights are normal working hours for floor work, not premium hours.
- No mention of where the water goes. Recovery water belongs in a sanitary drain, never a storm drain or the parking lot. A contractor without a disposal plan may discharge it outdoors.
- No photos. The result should be documented without being asked.
How Maddox prices it
Maddox quotes every job individually, from a $500 minimum visit, within one business day. The quote includes everything in the list above. Recurring programs are priced per visit, below the one-time rate, on month-to-month terms after the first 90 days. Send the square footage, the floor type, and a photo of the floor to receive a single figure and the reasoning behind it.