What Is Geofencing Advertising?
Geofencing lets you show ads to people who physically enter a specific location — like a competitor's store or a trade show. Here's how it works.
2 min read · Updated 2026-05-10
Short answer
Geofencing advertising draws a virtual boundary around a physical location and shows ads to people who enter that boundary on their phone. When someone walks into your competitor's store, you can show them an ad for your business.
How geofencing works
- You define a geographic area on a map (a "fence") — could be a single building, a neighbourhood, or a radius around a point
- When someone with a mobile device enters that area, their device ID is captured
- Your ads appear on that device — in apps, on websites, or in a browser
The ads can show immediately (while they're in the fence) or later (retargeting people who were in the fence).
Common uses for small businesses
Competitor conquesting — fence your top 3 competitors' locations and show ads to their customers. A car dealership might fence rival dealerships. A gym might fence a competitor's gym.
Event targeting — fence a trade show, farmers market, or local event and reach attendees who are likely to be your customers.
Neighbourhood targeting — fence specific residential streets or apartment complexes within your service area.
Your own location — retarget visitors to your own store after they leave. Someone who walked in and didn't buy can see follow-up ads.
What it costs
Geofencing campaigns typically cost $1,000–$2,500/month minimum through specialised platforms (like GroundTruth or Simpli.fi). It's not a small-budget tactic — it makes sense once you have a marketing budget and want to add a sophisticated layer.
For local businesses on tight budgets, location-targeted Google or Facebook ads are a more accessible starting point and accomplish something similar at lower cost.
Is it right for your business?
Geofencing works best for businesses with:
- A high average transaction value (auto dealerships, real estate, home improvement)
- A clear geographic competitor or event to target
- A marketing budget above $1,500/month
If you're just starting out, focus on Google Business Profile and local citations first.
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