Square-foot pricing only works if the square footage is right. Guess a driveway at 600 square feet when it is really 950 and your carefully set rate is now off by more than a third. The good news is that most of the measuring for a residential wash can be done from your desk in a few minutes, as long as you know what to include and what to check. This post covers how to measure flatwork from the satellite map, how to estimate house wall area, the pieces people forget, and how to sanity-check a number before it goes on an estimate.
Measuring Flatwork From the Satellite Map
Concrete shows up clearly on satellite imagery, which makes flatwork the easiest thing to measure remotely. Pull up the address, find the driveway, and trace its edges point by point. Then do the same for the front walk, any side walk to the backyard gate, the patio and the pool deck if there is one. Keep each area as its own outline so you can price and list them separately.
With the measure map in the software, you outline the area on the satellite view and it gives you the square footage. Trace on the concrete edge, not the edge of the grass. Overhanging trees can hide part of a driveway, so look for where the concrete re-appears on the other side and connect the lines. If the imagery is old and the customer says they added a patio, ask them for its rough size or a photo.
A typical two-car driveway might land somewhere between 400 and 900 square feet, but do not assume. Long rural drives and wide three-car pads can easily be double that. Measure every job, even when it looks like the last one.
Estimating House Wall Area
Siding is harder because satellite only shows the roof. The standard shortcut is perimeter times height. Measure around the outside of the house on the map (the roof outline gives you a close enough footprint for most homes; trim a little for overhang). Multiply by the wall height: roughly 9 to 10 feet per story for most homes, plus the triangular gable ends.
Say the perimeter is 180 feet and it is a single-story ranch with 9-foot walls. That is about 1,620 square feet of wall before gables. A two-story with the same footprint is roughly double. Many operators do not bother subtracting windows and doors, because those still get rinsed and the time saved is small.
Check street view for the details the map hides. A walkout basement turns the back of a "one-story" house into a two-story wall. Stone or brick sections may not get the same treatment as the vinyl. A screened porch adds soffits and screens. Note anything unusual on the property so the crew knows what you saw when you priced it.
Many companies price houses by size bracket or by story rather than strict square footage. That works too. The measurement still tells you which bracket the house belongs in.
The Areas People Forget
Most underpriced wash jobs are underpriced because something was left off, not because the rate was wrong. The usual missing pieces are side walks along the garage, the strip of concrete behind the garage door, steps (which are slow), the curb and gutter in front of the house if the customer wants it, and retaining walls.
Steps deserve their own line. Five concrete steps with risers can take as long as 200 square feet of open driveway, because the surface cleaner does not fit and the work is done with a wand. Price them by the step or by time, not by area.
Pool decks often have coping, pavers or a cool-deck coating that need gentler handling. Pavers bring their own extras: joint sand washing out, and the customer asking about re-sanding or sealing afterward. If you do not offer those, say so on the estimate.
Finally, ask about the backyard. A customer who says "driveway and patio" may picture the small concrete pad by the back door, or the 600-square-foot entertaining area by the pool. The map shows you which one is there.
Turning Square Feet Into a Price
Once the areas are measured, the math is simple, but keep it honest. Multiply each area by your rate for that surface, then compare the total against your time-based check. As an example, a 750 square foot driveway at an illustrative 20 cents a square foot is $150. If your crew does about 800 to 1,000 square feet an hour on that kind of concrete, the job is around an hour on the surface, plus setup, edging and rinse. Does $150 cover that hour plus the drive? If not, your minimum applies.
Production rate depends on the concrete. Heavily stained, never-cleaned concrete goes slower and may need pre-treatment. Smooth, recently cleaned concrete goes faster. A yearly repeat customer is often cheaper per foot to clean than a first-time job, which is one argument for offering a small discount on annual service.
Write down what you assumed. If the estimate says 750 square feet of driveway and the crew finds 1,100 because part of it was hidden under a tree, you have a clear, polite basis for adjusting the price before the work starts. Our pricing guide goes deeper on setting the rates themselves.
When to Go Look in Person
Remote measuring handles most residential flatwork and standard houses. Some jobs still need a visit. Commercial lots and drive-thrus often have access issues, curbs, grease and drainage questions that the map cannot answer. Roofs need a look at the material, pitch and condition. Wood decks and fences need you to judge whether the wood is sound enough to wash.
Heavy staining is another reason to look. Rust from irrigation water, oil, and battery acid stains are separate treatments, and pricing them blind leads to arguments.
If you have to go out, make the trip count. Measure everything, take photos, note the spigot and any hazards, and price on the spot. Techs who are allowed to write estimates in the crew app can build and send the quote before they leave, which beats writing numbers on a clipboard and typing them up that night.
Keep the Measurements With the Property
A measurement you took once is worth keeping. Next year's driveway wash is the same driveway. Save the measured areas and your notes on the property record so the repeat estimate takes a minute instead of a fresh measure.
That record also helps when the customer calls with a different request. If you measured the house and the driveway last year and they now want the fence, you already have most of what you need, plus the photos and notes from the last visit. Over a few seasons, a property file with measurements, notes and photos becomes one of the most useful things your office has. The pressure washing software overview shows where measurements, notes and photos live for each property, and it all starts with measuring carefully the first time.
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