Grid tools show your map ranking at many points around your office, producing a colourful heat map. They are genuinely useful and they are the most over-interpreted tool in local visibility, because they make small, meaningless changes look dramatic.
What a grid actually shows
The tool checks your rank for a keyword from a set of coordinates laid out around a centre point, then colours each point by position. The result is a picture of how your visibility falls away with distance.
Two things follow immediately. Your rank genuinely does differ street by street, because proximity is a dominant ranking factor. And a single overall rank number for a map keyword is therefore fictional. That is the legitimate insight these tools provide.
Why it is useful
- It shows your real catchment. How far your visibility extends from each office, which is strategic information.
- It exposes gaps. A direction where you fade out unexpectedly early can indicate a strong competitor rather than distance.
- It compares offices on a consistent basis.
- It identifies competitors actually appearing in your area, empirically.
- It tracks change over months, which is the only timescale it should be read on.
Why it is over-interpreted
The failure modes are consistent and mostly caused by the tool being so visually compelling:
- Normal volatility read as change. Map rankings fluctuate constantly. A grid that shifts from an average of 4.2 to 3.8 has probably not changed at all.
- Grid size dictates the picture. A tight grid over your immediate area looks excellent; a wide one looks alarming. Neither is more true, so keep the settings fixed or comparisons are worthless.
- Chasing points you cannot win. You will not rank in a suburb ten miles away with no office there. Distance is not a defect to be fixed.
- Confusing rank with patients. Rank at a coordinate where nobody lives, or in an industrial estate, is decoration.
- Vanity keywords. Tracking terms nobody searches produces flattering maps and no patients.
- Reporting the average grid rank as a headline figure, which compresses out everything informative.
Reading one properly
- Fix your settings: same centre, same grid size, same spacing, same keywords, same schedule. Change nothing between runs.
- Centre on the office, and size the grid to the area you realistically serve.
- Track terms patients actually use, informed by your Search Console and profile search-term data.
- Read monthly, not weekly.
- Look at shape, not average. Where does visibility end, and in which directions?
- Compare against a baseline captured before you made changes.
What it cannot tell you
- Whether anyone searched from those points.
- Whether appearing led to a call or an appointment.
- How you appear to a real person with search history and a specific device.
- Anything about referrals, payer directories, or AI answers, which are most of this course.
That last point sets the tool in proportion. Grids measure one surface. A practice can improve its grid and gain nothing, or leave the grid unchanged while insured referrals rise because its payer listings were corrected.
Use it as a diagnostic
The right posture: treat a grid as a diagnostic you run occasionally, not a scoreboard you watch. Use it to answer specific questions, such as whether a new office has established a catchment, or why one location underperforms another.
Then judge success on the five numbers from earlier in this chapter, led by new patient enquiries. Call tracking is next.