Guerrilla marketing: the mechanism, documented examples and how to plan one

Guerrilla marketing substitutes surprise, imagination and physical context for media budget. Instead of buying attention, you place a single idea somewhere people are not expecting it, in a form they will photograph and pass on, so the audience and the press carry it further than the spend could. The term comes from Jay Conrad Levinson's 1984 book of that name, written for small businesses competing against larger advertisers. Three things make it work rather than just being cheap: the surprise, the use of the location as part of the message, and a reason for somebody to take a picture.

This page covers what qualifies, the formats that repeat, documented examples with the mechanism behind each, and the planning and permissions that decide whether yours goes well.

What qualifies, and what is just a cheap advert

A flyer under a windscreen wiper is low cost advertising. It becomes guerrilla marketing only when the placement itself carries meaning. Three tests:

• Surprise. It appears where advertising is not expected.
• Context. The location, object or moment is part of the message, not just a surface.
• A reason to share. Somebody who sees it wants to show somebody else, which is where the reach comes from.

If you can move the idea to a billboard without losing anything, it was a billboard idea.

The five formats

Format	What it is	Best for
Ambient	The message placed on an existing everyday object so the object completes it	A simple product claim that can be shown rather than argued
Installation	Something physical built in a public space that people walk into or around	Brands with a story that needs a minute of attention
Stunt	A one off event staged to be covered by press and filmed by onlookers	Launches, and categories where press coverage is the real prize
Street level	Projection, stencils, wild posting, costumed teams, sampling in unexpected places	Local businesses and city specific campaigns
Experiential	A temporary space where the public does something with the product	Products that are better experienced than described

Two things sometimes grouped in here that are worth separating. Ambush marketing, where you market around an event you have not sponsored, carries real legal exposure at major events. And paying people to pose as ordinary customers is deception: in the United States the FTC's endorsement guides require a material connection to be disclosed, and the disclosure is what separates a street team from a scam.

Documented examples, and the mechanism in each

The Blair Witch Project website, 1999

The film's marketing presented its fiction as a missing persons case on the open web before audiences were used to that. Mechanism: use a medium in a way the audience has no defences against yet, and let curiosity do the distribution.

UNICEF's dirty water vending machine, New York, 2009

A branded vending machine on a street offered bottles labelled with waterborne diseases, selling nothing anyone wanted to drink. Mechanism: make an abstract statistic physically present, in a familiar object, so the point lands without a word of copy.

Red Bull Stratos, 2012

Felix Baumgartner's stratospheric jump was built as a live event rather than an advertisement, the culmination of years of athlete and stunt programming. Mechanism: fund something genuinely worth watching and let the brand be the thing that made it possible.

Fearless Girl, New York, 2017

State Street Global Advisors and McCann placed a bronze statue of a girl facing the Charging Bull in the financial district, tied to a fund focused on companies with women in leadership. Mechanism: put an object in a place that already carries meaning, so the existing landmark becomes half of your message.

HBO's Westworld town at SXSW, 2018

A full scale version of the show's setting was built for festival attendees to walk through and be met by actors in character. Mechanism: turn the audience into participants, in a place where thousands of people with cameras are already looking for something to film.

The common thread is not budget, since those five span a student film crew and a global asset manager. It is that each one used a place or an object that was already loaded with meaning.

How to plan one

1. Write the one sentence somebody should be able to say after seeing it. If it takes two sentences, the idea is not ready.
2. Choose the location before the execution. The place is the creative brief: a station, a queue, a kerb, the space outside a competitor, an object everybody touches.
3. Sort the permissions. Private land needs the owner, public space usually needs the council or the transport operator, projections and flyposting are restricted in many cities, and chalk, paste and stickers can bring fines for criminal damage. One phone call in advance is cheaper than a removal notice on the day.
4. Plan the photograph. Decide the angle that makes it legible in a square crop on a phone, and have your own photographer and a short film there.
5. Give it a destination. A short URL, a QR code, a specific landing page or a unique phone number, so the attention has somewhere to go and something to count.
6. Brief a press list with the images the same morning, because earned coverage is usually the larger half of the result.
7. Arrange the removal. Who takes it down, when, and who cleans up. A stunt that leaves litter becomes the story.
8. Prepare for it working. Stock, staff and a phone that gets answered. Demand arriving at a closed door is the most expensive outcome available.

How to measure it

• Earned coverage: named outlets, their audience, and whether the brand appears in the headline or just the picture caption.
• Branded search volume in the days around it, against the fortnight before.
• Traffic to the unique destination, and enquiries from it.
• Footfall or redemptions at the locations involved, compared with a location you left untouched.
• Social posts that are not yours, counted by hand if necessary. That number is the clearest measure of whether the share mechanism worked.

When to choose something else

Guerrilla work suits a simple, visual claim and a brand that can take a bit of mischief. Choose a different approach when the message needs detail or disclosure, when you operate in a regulated field where advertising copy is approved in advance, when the location would be a sensitive one, or when your audience is a few hundred named businesses, in which case direct contact reaches all of them for less.

This page covers unconventional, location led campaigns and how to run one. For campaigns built around media buying and repeated messaging, broader campaign planning covers that ground, and for everyday publishing a content calendar does the job.

The guerrilla marketing questions worth an answer

Is guerrilla marketing legal?

The idea is, and specific executions depend on permissions. Private property needs the owner's consent, public space is governed by local rules on structures, projections and flyposting, and events protect their sponsors vigorously. Ask first, and keep the written permission with you on the day.

Does guerrilla marketing work for small businesses?

It was written for them. A local business has advantages here: it knows the streets, the queues and the moments in its own town better than a national brand ever will, and one well chosen location in a small market can reach most of the customers worth reaching.

How much does a guerrilla campaign cost?

The structure matters more than the figure: production of the physical thing, permissions, a photographer and a film, staff on the day, press outreach and removal. Price those six lines for your own idea, since production and permission costs vary by city.

What is ambient marketing?

The subset where the message is applied to an existing everyday object or surface so that the object completes the idea: a handrail, a drain cover, a cup, a step. It is the cheapest format and the most dependent on a genuinely good idea.

How is this different from experiential marketing?

Experiential campaigns are built to be entered and participated in, usually with permission and a budget. Guerrilla work is defined by surprise and by using the context, and the two overlap whenever an installation is also unexpected.

The unexpected place a recommendation appears

A guerrilla stunt works because people did not expect it. Photos, press and posts about it then become the written record that an assistant draws on later.

That gives a campaign an afterlife. Weeks later, ask an assistant about your category and see whether the stunt gets mentioned, and whether the description matches what you intended. Pages that explain the idea in plain words, in your own site and local press, are what get repeated. Which write ups carried the story is visible in AI Knows Us, which lists the sources.