Addresses, Postcodes and Map Pins That Find You

A customer opens a directory, finds your listing and taps the map. The pin lands in the middle of a field, or on the next street, or at the back of a building with no door. They turn up late, frustrated and, if you are lucky, call you. If you are unlucky, they give up.

Getting the address and the pin right is one of the least glamorous and most valuable pieces of listing care. This article explains how addresses become pins, why errors happen and how to prevent and fix them.

From text to a point on a map

An address is text. A map needs coordinates. The step that turns one into the other is called geocoding. Wikipedia describes it as the process of taking a text description of a location, such as an address or the name of a place, and returning geographic coordinates.

The directory takes the address you give, matches it against reference data about streets and properties and places a marker. If the reference data is good and the address is clear, the marker lands in the right spot. If not, it lands nearby, or somewhere else entirely.

Wikipedia lists common causes of inaccuracy.

• Estimated positions along streets. Some systems assume that odd and even numbers sit on opposite sides and spread properties evenly along a street, which rarely matches reality.
• Uneven property distribution. Properties cluster, so the estimated point may be far from the actual building.
• Out-of-date reference data. New streets and buildings may not yet exist in the data.
• Street geometry. Curved streets treated as straight lines produce points off the real road.
• Ambiguous addresses. The same street name exists in several towns.

None of this is your fault, but the consequences fall on you.

How UK postcodes help, and where they stop

In the UK, postcodes are a powerful aid. Wikipedia explains that a postcode has two parts: an outward code, which identifies the postcode area and district, and an inward code, which comprises a sector and a unit. A postcode unit generally represents a small group of properties, with most covering about fifteen addresses, though some cover a single property or a large organisation.

That means a postcode narrows a location to a street or part of a street. It rarely identifies a single door. For a building with several entrances, a business inside a shopping centre or a unit on an industrial estate, the postcode may point to the general area but not the entrance.

Use the full, correct postcode. A wrong digit can move your pin to a different town. Check it against an official source, such as the postal service's lookup, and against the postcode on your own post.

Write the address in a consistent format

Directories, search engines and people all do better with a consistent address. Choose a format and use it everywhere.

A typical UK format:

• Building name or number and street
• Locality or town
• County, if used
• Postcode
• Country

Schema.org's PostalAddress type breaks an address into parts: street address, locality, region, postal code and country, with the country recommended in a standard two-letter code. Following the same logic in your listing, even if you only fill in a single address field, helps systems read it.

Avoid unnecessary variations: "St." versus "Street", "Unit 3" versus "3" or "Flat B" versus "B Flat". A system may handle them, but consistency removes doubt. Do not add extra text to the address field, such as "next to the post office". Put directions elsewhere.

Check the pin

After saving your address, look at the map.

1. Zoom in. Is the marker on your building, or near it?
2. Check the side of the street. Is it on the right side, with the right entrance?
3. Look for obvious errors. In a field, in a river, in the next village?
4. Check from a customer's perspective. If someone navigates to the pin, where will they end up?
5. Test with a navigation app. Does it take you to your door?

Most directories let you drag the marker or adjust the position. Move it to your entrance, and save.

Add directions where the pin is not enough

Some places are hard to find even with a perfect pin.

• Hidden or rear entrances. "Entrance on Mill Lane, behind the pharmacy."
• Shared buildings. "Second floor, buzzer 4."
• Industrial estates and retail parks. "Unit 7, follow signs for Block C."
• Seasonal or temporary access. "Use the side gate in winter."
• Landmarks. "Opposite the library."

Put these in the description or the directions field, if there is one. Keep them short and accurate.

Handle new buildings and unusual addresses

If your premises are new, converted or unusual, geocoding may struggle because the reference data has not caught up.

• Check that the postcode exists and covers your building.
• Provide a landmark or coordinates if the directory accepts them.
• Ask the directory to correct the location if the edit tools do not work.
• Revisit after a few months, when the reference data may have updated.

If you have multiple units or addresses at one site, make sure each is distinct.

Avoid ambiguous place names

Many town names repeat. A listing in "Newport" or "Richmond" without a county or country may be matched to the wrong place. Always include enough of the address for the system to disambiguate: county, postcode, country. Wikipedia lists ambiguous addresses as a standard source of geocoding error.

Keep it consistent everywhere

The address in your directory listing should match the one on your own website, your map profile, your invoices and your other listings. Mismatches can confuse customers and systems. If you move, update everything promptly, and keep a note of every place that shows your address. If you have previous addresses on old listings, correct or close them.

Do not publish an address you do not want visited

Not every business wants customers at the door. If you work from home, consider a service-area listing without an address, as described in our article on service-area businesses. If you must show an address, make sure it is a place that customers can safely and legitimately visit.

Watch for changes

Roads change. Buildings change. A new one-way system, a closed bridge or a changed entrance can make your location harder to find. Review your pin and directions once or twice a year, and after any change to access. Add temporary notices where needed.

A worked example

A small physiotherapy clinic moves into a converted warehouse. The directory places the pin on the road at the front of the building, but the public entrance is round the back in a car park. Patients keep ringing to ask where to go.

The practice manager zooms in on the map, drags the marker to the rear entrance and saves. She checks that the postcode is correct, formats the address consistently across the directory, her website and her map profile, and adds a line to the description: "Entrance and free parking at the rear, off Mill Lane. Look for the green door." She tests the pin with a navigation app on her phone.

Over the next month, calls asking for directions drop, and a patient comments in a review that finding the clinic was easy.

A checklist

• Full address in a consistent format
• Correct postcode, checked against an official source
• Enough detail to avoid ambiguity
• Pin checked and moved to the entrance
• Directions for hidden entrances
• Tested with a navigation app
• Matching address on every listing
• Review twice a year

Listings here record a country and city rather than a street address or map pin, so use the steps above for the directories and map profiles that do show one. The categories page here helps you find the right listing type, the search page finds listings by words, and the submit page starts yours, which you edit from your account.

When customers still cannot find you

If you keep getting calls from lost customers, treat it as data. Ask them where they ended up and what they were following. If most come from one app, check how that app shows your pin. If they arrive at the right street but cannot find the door, add a photograph of your entrance to the listing and a description of its colour, signage and nearest landmark. If they use public transport, add the nearest stop. Over a few weeks, the pattern of calls tells you exactly what the listing is missing, and each fix removes a whole category of problem.

Photographs as navigation

A picture of the front of your building taken from the pavement, in daylight, is one of the best navigation aids you can give. Take one from each direction customers might approach. Label them if the directory allows, such as "View from the bus stop" or "Entrance from the car park". Keep them current: if you repaint the door or change the sign, replace the photograph. Customers use these images to confirm that they have arrived, and a good one saves a phone call.

Frequently asked questions

Can I enter coordinates directly? Some directories allow it. Check the edit tools.

What if two businesses share my address? Use unit numbers or floor details, and add directions.

Does my pin affect where I appear in search? Location matters for local matching, so an accurate pin helps you appear for the right places.