Concrete Estimates From the Map vs on Site: When to Drive Out

Every concrete contractor has driven 40 minutes to measure a driveway for someone who was just curious, then never heard back. Free estimates are part of the trade, but they do not have to eat every afternoon. Here is how owners split the work between the satellite map and the site visit.

What a free estimate really costs

Count it honestly: 30 to 60 minutes of driving, 20 to 40 minutes on site, then writing the quote. Call it two hours. If half your estimates never book, every job you win carries two hours of estimates that went nowhere. At a $75 an hour value of your time, a driveway job quietly carries $150 to $300 of unpaid estimating.

What the map does well

Satellite images are good at the main question a homeowner has: about how much? Outline the driveway, the patio or the walk and the area comes out within 5 to 10 percent on open ground. With a starting price and a rate per square foot, that becomes a price range:

• A 600 square foot driveway outlined on the map: about $6,000 at $2,400 for the first 200 square feet and $9 after
• With tear-out of the old driveway: about $7,500
• A 300 square foot patio: about $2,800 in broom finish, about $4,600 stamped

A homeowner who sees that range at night either knows it fits their budget or knows it does not. Both answers save you a trip.

What the map cannot see

The visit is still where you protect the job. Things no satellite image shows:

• Slope and drainage, and whether the new slab can shed water away from the house
• Soil, soft spots, old fill, or a high water table
• What is under the old slab: thickness, rebar, a buried utility, tree roots that lifted it
• Access for the ready-mix truck, and whether you need a pump or buggies
• City rules for driveway approaches and sidewalks
• Recent changes if the image is a year or two old

These are the things that turn a $6,000 job into a $7,200 job, or a profitable job into a loss. They belong in the visit and in the written quote.

How owners split it

1. The customer gets a range first, from your website or your receptionist, using your rates and the measured square feet
2. Only customers who accept the range book a visit. You see the address, the square feet, the add-ons they chose and the price they saw before you go
3. On site you confirm, check the points above, and adjust the price in writing if something changed
4. You take the deposit that day or by text that evening

Contractors who work this way usually do fewer estimate visits, but more of them book, because the price talk already happened.

Measuring tips for the map

• Trace the concrete, not the lawn edge. Zoom in far enough to see the joints
• Driveways: from the garage door to the street, apron included. The city approach may need its own permit
• Patios: outline against the house wall, and add steps separately
• Trees and shade hide edges. When in doubt, the visit decides
• Old images: ask the homeowner if anything changed recently, like an addition or a new pool

Keep the range honest

Show a range, not one number. The calculator shows about 10 percent below and 15 percent above the computed price, which leaves room for what the visit finds. If you regularly find more work on site than the range allowed, raise your rates rather than surprise people.

An example week

Picture a crew that gets 12 estimate requests in a week. Without a price up front, the owner drives to all 12, spends about 24 hours on it, and books four. With a range shown online first, five of the 12 decide the price is not for them and never ask for a visit. The owner drives to seven, spends about 14 hours, and still books four, because the people who dropped out were never going to buy at his price. Ten hours back is a full extra day of pouring, every week, in the busiest part of the season. These numbers are an example; run your own from last month's estimates.

Put it on your site

The concrete estimate software puts this on your own website: the homeowner outlines the job on the satellite map, adds tear-out, rebar or color, sees your range and books the visit. Try it on the concrete driveway cost calculator. Read how much to charge for concrete per square foot to set the rates behind it.