Most commercial leases run three to five years with personal guarantees attached. That makes your location decision one of the largest financial bets you'll ever place — usually made after a couple of drive-bys and a chat with the listing broker. National chains never do it that way. Before Starbucks or Chick-fil-A signs anything, an analyst has scored the site on demographics, traffic, competition, and a dozen other signals.
The good news: almost all of that data is public. Here's the checklist, in the order that disqualifies bad sites fastest.
1. Check zoning first — it's the only instant dealbreaker
Everything else on this list is a matter of degree. Zoning is binary: either your use is permitted at that address or it isn't. County and city GIS portals publish zoning maps for free, and a quick call to the local planning office confirms what a zone code actually permits.
Don't rely on the fact that a similar business operated there before. Uses get grandfathered, codes change, and conditional-use permits don't transfer. Verify in writing before you spend another hour on the site.
2. Measure your trade area in drive time, not miles
A '3-mile radius' is meaningless if a river, interstate, or one-way grid cuts the circle in half. What matters is who can reach you in 5, 10, or 15 minutes of actual driving. This is why professionals use drive-time polygons (isochrones) built on the real road network.
Once you have that polygon, the question becomes: how many people live inside it, what do they earn, and is the population growing or shrinking? Census ACS data answers all three for free.
3. Count competitors — but read saturation, not raw numbers
Three coffee shops within a half mile sounds bad until you realize the corridor has the daytime population to support six. Zero competitors sounds great until you ask why nobody has tried. Compare competitor count against the population and spending power inside your trade area, not against your gut.
Also map the anchors: grocery stores, hospitals, schools, transit stops. Anchors generate trips, and trips generate walk-ins. Being 400 feet from a busy grocery store is often worth more than being on a prettier block.
4. Get the real traffic count
Every state DOT publishes AADT — annual average daily traffic — for major roads. It's the actual number of cars passing per day, not an impression. For most retail and food businesses, the difference between 8,000 and 30,000 cars a day is the difference between a slow ramp and a fast one.
Pair the number with access: a 30,000-car road with a median and no left turn into your parking lot performs like a much smaller road.
5. Sanity-check safety and the rent benchmark
Pull local crime data where the city publishes it, or FBI statistics for the jurisdiction as a fallback — and note which one you're looking at, because they answer different questions. Then benchmark the asking rent against HUD fair-market data for the ZIP so you know whether the landlord's number is in line with the neighborhood.
None of this replaces walking the site, talking to neighboring tenants, and hiring a good broker. But doing the data homework first means you walk in knowing which questions to ask — and which sites never deserved a visit.