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Print & Out-of-Home

Billboard advertising: formats and prices

Six words, one image, and two seconds of attention. Outdoor is the most disciplined medium there is, and the discipline is where most campaigns fail.

Oct 15, 2025 2 min read 431 words
Billboard advertising: formats and prices

Key points

  • Six words is the working limit for a roadside poster.
  • Location quality varies far more than price does; inspect before booking.
  • Outdoor builds recognition, not response; judge it accordingly.

Outdoor advertising is seen at speed, in passing, by someone doing something else. Every rule in the medium follows from that.

Six words

A roadside poster is read in one to three seconds. That allows a headline of about six words, a logo, and one image.

Anything more is not read. Telephone numbers, web addresses, lists of services and body text are wasted on a poster passed at 50 kilometres per hour.

If you cannot say it in six words, outdoor is the wrong medium for that message. Choose a different message, not a smaller typeface.

The formats

FormatSizeTypical use
Large-format billboard18 sqm and abovebrand, high impact
Standard poster8 to 9 sqmthe workhorse
Pedestrian panel1.5 to 2 sqmurban, closer reading
Transport shelter1.7 sqmdwell time, more words possible
Digital screenvariesrotating, flexible
Column and pillarvariesurban, traditional

Formats with dwell time, so shelters, stations and pedestrian areas, permit more text because the viewer is waiting rather than passing.

Location matters more than price

Two sites at the same rate can differ enormously in value. Before booking, look at the actual location or ask for a photograph.

What to check: the approach distance and whether the site is visible for more than a moment; whether it faces the traffic flow or is seen at an angle; competing posters immediately adjacent; obstruction by trees, signs or parked vehicles; and lighting, since an unlit site is invisible for a large part of the year in winter.

Site lists sold as packages frequently include several poor locations to make up numbers. Ask which specific sites you are getting and inspect the ones you can.

Design for the distance

Text height should be roughly proportional to viewing distance. A rough guide: 25 mm of letter height per 10 metres of viewing distance.

High contrast is essential. Subtle colour relationships that work on screen disappear at distance and in poor light. Test by viewing the artwork as a thumbnail on a phone from arm's length; if it fails there, it will fail on the road.

What outdoor is for

It builds recognition through repetition among people who pass the same site daily. That makes it excellent for brand presence in a defined area and poor for direct response.

Measuring it by enquiries attributed to a poster will always disappoint. Measure by recognition, by name search volume, and by regional holdout.

Booking practicalities

Rates are negotiable, particularly for late availability and longer periods. Ask what is unsold for the coming cycle.

Production is separate from site rental and is usually a modest addition. Confirm who prints, posts and removes, and what happens if a poster is damaged.

Frequently asked questions

How long should a poster campaign run?

Two weeks minimum, four is standard. A single week rarely accumulates enough exposures to register.

How much does it cost?

Depending on format and location, £150 to £900 per site for a two-week period in regional markets.

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