Expanding into a new town is one of the most expensive bets a home services business makes. Most of what you need to decide whether a market is worth it is already public. You just have to know which numbers to pull and how to weigh them against each other.
Most owners start with population, because it's the easiest number to find. However, it's the wrong one to lead with. Population only tells you how many people live somewhere. It won't tell you how many of them can say yes to a $9,000 repipe, or whether three established competitors already have the map pack locked up before you've signed a lease. What follows is a simplified framework we actually use for our expansion studies, so that you can run a version of it yourself.
Start with the housing stock
Plumbing demand follows the age and ownership of homes, not the size of the population. Two numbers do most of the work, and both are sitting in public Census data:
- Owner-occupancy rate. Owners pay for repairs; renters call a landlord. A town with roughly 65% owner-occupancy has a much larger pool of people who can actually say yes to a repipe, a water heater replacement, or a full repair job. A town dominated by rentals can look big on paper but produce almost no real demand.
- Share of homes built before 2005. Original supply lines, fixtures, and water heaters start needing replacement around the 20–25 year mark. A town full of pre-2005 homes keeps generating replacement work year after year.
A town of 40,000 people living mostly in new-build rentals can be a poorer market than a town of 18,000 people in older homes they own. Population hides that difference. These two numbers show it.
Layer in income
Demand isn't enough by itself. Homeowners also have to be able to choose quality over the lowest bid. Median household income tells you whether a market can support premium jobs like tankless conversions, whole-home repipes, and water treatment, or mostly bare-minimum patch repairs. A town can clear the housing-age bar and still be a low-margin grind if nobody can afford anything beyond the cheapest fix.
Then measure the competition
Most owners skip this step, and it's the one that sinks expansions. A market with great demand and high income can still be a bad bet if someone already owns it.
Two signals matter here:
- How many active contractors already serve the area. The question isn't whether there are other plumbers, because everywhere has other plumbers. It's how many are actively competing for the calls you'd be chasing.
- How locked-up the local map pack is. Search "plumber near me" from the target town and look at the top three Google Maps results and their review counts. An incumbent with 500+ reviews has spent years building a lead you can't out-market in a quarter. One with 80 reviews is a fight you can win.
The 10-minute check: run that search from inside your candidate town, not from your home base, since map results shift with location. Write down the review counts on the top three results, then compare them to the shops further down the list. You're reading the gap, not a fixed number. Where we've measured it, the three at the top carry thousands of reviews each while about half the field sits under a hundred, and that spread is what a dug-in pack looks like. Where the top three are close to the middle of the field, in the low hundreds with no regional name among them, a new address and a steady review habit put you in real contention.
So a town can have great demand and still be a trap if one incumbent already owns the map pack. The ones worth entering are where real demand meets a field you can realistically break into. That's rarely the richest town on your list, and rarely the emptiest one either. The Map Pack Trap walks through a worked example of two towns with identical demand and opposite competition, plus how to read the top three beyond just their review counts.
A hypothetical: two candidate towns
Take two candidate towns, built from the kind of numbers you'd actually pull for a real expansion decision.
| Metric | Meadow Creek | Fairview Heights |
|---|---|---|
| Population | 42,000 | 19,500 |
| Owner-occupancy | 51% | 71% |
| Homes built before 2000 | 22% | 68% |
| Median household income | $58,000 | $84,000 |
| Top 3 map-pack review counts | 610 / 480 / 390 | 95 / 60 / 40 |
On population alone, Meadow Creek looks like the obvious pick, with more than double the people. But run it through the actual framework:
| Factor | Meadow Creek | Fairview Heights |
|---|---|---|
| Housing demand (owner-occupancy + home age) | 2 / 5 | 5 / 5 |
| Income depth (can they afford premium jobs?) | 3 / 5 | 4 / 5 |
| Winnable competition (map-pack entrenchment) | 1 / 5 | 4 / 5 |
| Total | 6 / 15 | 13 / 15 |
Meadow Creek's population advantage collapses once you account for who actually lives there (mostly renters, in newer homes) and who already owns the map pack (three incumbents with a combined 1,480 reviews). Fairview Heights is smaller, but it's the one you can win. More owners who can say yes, aging infrastructure that keeps needing work, and a top three you can realistically outrank within a year.
That's what "demand you can serve times competition you can beat" looks like in practice. Neither half of the equation is optional.
The framework
Before you commit to a new service area, work through this in order:
- Pull owner-occupancy and pre-2005 housing share for every candidate town within your target radius (typically 18–25 miles from your existing location), including towns you don't already have a hunch about.
- Check median household income to see whether the demand supports premium work or just bare-minimum repairs.
- Run the 10-minute map-pack check from inside each town and record the top three review counts.
- Score each candidate. Even a rough 1–5 on demand, income, and winnable competition gives you a ranking faster than gut feel alone.
- Confirm a real office address exists in your top choice. A P.O. box or virtual office won't support a Google Business Profile. You need a private address to register one, and the Business Profile is usually the single biggest driver of new local calls.
- Rank your shortlist by total score, not by population. The winnable market usually isn't the biggest one.
A few signals this quick version doesn't capture: local travel considerations, referral density, and local trade networks. We cover those in Beyond the Census.
FAQ
How far should I expand from my current location? 18–25 miles is the typical range for a satellite office. Far enough to reach a genuinely new market, close enough to manage from your existing base. However, you should treat it as a starting point rather than a hard rule. A town 22 miles out with a 45-minute commute through heavy traffic behaves like a much farther market than the raw mileage suggests.
What data should I actually look at before picking a new service area? Start with owner-occupancy rate, the share of housing built before 2005, and median household income, which are all free on the Census Bureau's data site. Those three numbers predict real plumbing demand far better than total population does.
How do I know if a market is too competitive to enter? Search your trade "near me" from inside the town and compare the top three Google Maps results' review counts against the rest of the field. Every market has competitors, so the count alone tells you nothing. Where the leaders sit in the thousands while half the field is under a hundred, that gap is a multi-year head start most local shops can't match. A top three that's only a little ahead of the middle, with no regional name in it, is the one worth entering.
Do I need a physical office to expand into a new town? Yes, if you want to rank in local search. A Google Business Profile requires a real, staffed address. A P.O. box or virtual mailbox doesn't qualify. In a market where nobody knows your name yet, that address is usually the single biggest driver of new local call volume.
Is population the best way to size up a new market? No. It's the most misleading number available, because it counts people who will never become customers, like renters in new construction. Owner-occupancy and housing age get you much closer to real demand.
How long does it take to properly evaluate a new market? Done by hand, this is a real research project. Pulling Census data, running map-pack checks, and scoring several candidate towns runs several hours per town if you're thorough. Our expansion studies compress those hours of work into a single ranked report covering every candidate area at once.