Setting Your Service Area Radius Profitably

Drive Time Is Your Most Expensive Unbilled Hour

Windshield time is the only major cost in a service business that is invisible on every invoice. Materials are on there. Labor is on there. The ninety minutes you spent getting to a job across the metro and back is not, and because it is invisible, it does not factor into whether you take the job.

It is also worse than it looks, because drive time is doubly expensive. You pay the direct vehicle costs - fuel, tires, brakes, maintenance, insurance, depreciation - and you lose the billable hour you could have sold instead. If your day holds a fixed number of productive hours, every hour of driving does not just cost money, it removes inventory you cannot restock.

The goal is not to shrink your map. It is to know what each ring on it actually costs, so that when you take a far job you take it deliberately and priced correctly, rather than because it was on the phone and saying yes felt like growth.

Calculate Your Real Cost Per Drive Hour

Two components. First, vehicle cost per mile: take twelve months of fuel, maintenance, tires, repairs, insurance, registration, and either lease payments or an honest depreciation estimate, then divide by miles driven for the year. Most operators who do this for the first time find the number well above what they assumed, because they were mentally tracking fuel and nothing else. The current IRS standard mileage rate is a reasonable sanity check if your own records are incomplete.

Second, opportunity cost per hour: your billable rate, or if you are a crew, the loaded cost of everyone sitting in the truck. This is the bigger of the two numbers by a wide margin for most trades. A two-person crew driving forty minutes each way has burned more than an hour of paid labor before touching a tool.

Put them together in a hypothetical. Say your vehicle costs 65 cents a mile and your billable rate is $95 an hour. A job 25 miles out is 50 round-trip miles, about $33 in vehicle cost, plus roughly an hour of driving at $95 in foregone billable time - call it $128 of cost before you have done anything. On a job worth $400 that is nearly a third of the ticket. On a job worth $900 it is annoying but fine. That comparison, not the mile count, is the actual decision.

Draw Three Zones, Not One Circle

A single radius forces one answer to a question that has three. Use zones instead, and define them by drive time rather than distance - twenty miles on a highway and twenty miles through city traffic are completely different jobs.

Zone one is your core: roughly under twenty minutes drive time. You take everything here, standard pricing, and this is where your marketing dollars go. Zone two is extended: twenty to forty minutes. You take these with a trip charge or a minimum job size, and ideally you cluster them on specific days. Zone three is exception-only: beyond forty minutes. You take these only when the job is large enough, the customer is a repeat or a referral source, or it lands next to something else you already have booked.

Write the zones down and put the drive-time boundary on paper, because the point is to make the decision before the phone rings. In the moment, with a customer on the line and an open Thursday, everyone talks themselves into the far job. A written rule is what protects you from your own optimism.

Trip Charges and Zone Pricing That Do Not Scare People

You have three honest mechanisms. A flat trip charge by zone, disclosed before you dispatch. A higher minimum job size for outer zones - often better received than a fee, because the customer sees it as a threshold rather than a surcharge. Or simply a higher hourly or per-job rate for outer zones, quoted as a single all-in number.

Whichever you pick, disclose it on the phone, before the visit. Surprise fees on an invoice cost you more in reviews and repeat business than the fee is worth. Phrase it as a fact rather than an apology: We do serve that area - jobs out there have a $65 trip charge, or a $350 minimum. Would you like me to get you scheduled? Said plainly, most customers accept it without comment. Said apologetically, they hear it as negotiable.

One thing not to do: quietly padding the estimate to cover drive time without saying so. It makes you look expensive against local competitors for reasons the customer cannot see, and it means you never learn whether people would have paid the trip charge if you had simply asked.

Route Density Beats Radius

The real lever is not how far you go, it is how many jobs you do per trip out. Three jobs within a mile of each other forty minutes away can be more profitable than three scattered jobs fifteen minutes away, because the expensive drive is amortized across all three instead of paid three separate times.

The practical implementation is day-of-week zoning: north side Tuesdays and Thursdays, south side Mondays and Wednesdays, Friday for whatever needs catching up. It sounds rigid and it works, because it gives you something specific to offer on the phone. Instead of the vague when can you come out, you say I am out your way Thursday - morning or afternoon? That question closes better than an open calendar does.

Emergencies break the pattern and should. Price them accordingly. The point of zoning is not to refuse urgent work, it is that your routine work should not be scheduled as though every day is an emergency.

Supply Runs Are Hidden Radius

There is a second radius most operators never map: the distance from a job to the place you get parts. A job fifteen minutes away that sends you on an unplanned thirty-minute round trip to a supply house cost you more than a job thirty minutes away where everything came off the truck. This is the mileage that never makes it into anyone's mental math because it does not feel like traveling to the job.

Three fixes, in order of return. First, stock the truck for the top ten items in your most common job types - the parts you fetch repeatedly are the parts to carry. Second, know which suppliers sit near which zones and buy on the way out, not as a separate trip from the shop. Third, buy in a way that does not require a counter visit at all, whether that is a delivery account, an online distributor, or a sourcing service that finds wholesale pricing and gets material shipped to you. Our Supply Sourcing product does that last one, but the savings is real regardless of who does it, because the point is removing the trip, not who books it.

Log your supply-run miles for a month alongside your job miles. Operators are routinely surprised - it is not unusual for parts fetching to account for a substantial share of total driving, and unlike drive time to a customer, none of it is even indirectly billable.

How to Say No Without Losing the Relationship

Turning down a job feels like leaving money behind. It usually is not. A job that runs a thin margin after real drive cost also occupies a slot that a closer, better job could have filled, and it puts you further from the next call if something goes wrong on a job you already have.

Say no by handing them something. That is out past where we work, but call Rivera Plumbing over there, they are good. This takes twenty seconds, leaves the customer better off, and builds the referral relationship that sends work back to you. Never end the call with a flat no when a name costs you nothing.

Build that reciprocally. Find two or three operators in your trade in adjacent areas and agree to trade edge-of-map jobs. Each of you gets denser routes, and both of you get a stream of pre-warmed referrals from someone the customer already trusted enough to call. This is one of the highest-return relationships a local service business can build and it requires no budget at all.

Review the Map Quarterly

Your zones are a hypothesis, not a permanent fact. Every quarter, pull your completed jobs, tag each with its zone, and compare average profit per job and profit per hour including drive time. The second number is the one that tells the truth.

Look for two specific patterns. If an outer zone is producing consistent, well-sized work, it may deserve to be promoted - and that is a marketing signal too, since demand is telling you where to advertise. If an inner zone is producing lots of small, low-margin jobs, the fix is usually a minimum job size, not a boundary change.

Fuel prices move, traffic patterns shift, a new supplier opens, and the town that was forty minutes away gets a highway extension. Re-running this four times a year takes about thirty minutes and keeps your map matched to the territory you are actually working.