How do I register my new self-build address?

Registering an address is essential for your self-build — from getting utilities connected to meeting legal requirements. Here’s how to apply and what to expect.

In this article we cover:

• Why you need a postal address early in your self-build project
• Who assigns addresses and how the process works
• How to choose and suggest a name or number
• What documents you need to apply
• How long the approval process typically takes
• Typical costs and what can affect them

Registering an address for your self-build might seem way down on your project’s ever expanding to do list, but in actual fact, you should get on to it right away – ideally as soon as planning permission is granted.

Having an official address isn’t just a formality. You’ll need it to arrange services like electricity, water and broadband, and it’s often needed for legal paperwork, sales or marketing. Without it, things can slow down quickly.

If your project includes creating a new street or access road, the process becomes more complicated — so the sooner you apply, the better.

Postal addresses in the UK are issued by your local authority, typically through the Local Land and Property Gazetteer (LLPG) or the Street Naming and Numbering (SNN) team. These addresses are recorded in the National Land and Property Gazetteer (NLPG) and must comply with British Standard 7666.

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Can you choose a name or number?

In most cases, yes — you can suggest names or numbers, but your local authority has the final say. They’ll check that your suggestions make sense and aren’t too similar to anything nearby.

A good rule of thumb is to offer three name ideas in order of preference. This improves your chances of one being accepted. For numbering, your address will need to fit into the existing system. For example, if you’re building on an infill plot that sits between numbers 19 and 20, it may become 19A. If the neighbouring homes use names instead of numbers, you’ll need a name too

How to apply to register an address for your self-build

You can usually apply online, though some councils might ask for applications by email or post. There’s normally a fee involved.

You’ll need to include:

• A location plan showing how your site connects to the surrounding roads
• A layout plan with each plot clearly marked and the main access shown
• CAD drawings with geo-referencing (if you’re proposing a new street)
• A copy of your planning permission
• Drawings showing the full extent of your development

If you’re proposing a new building or street name, include at least three suggestions.

How much does registering an address for your self-build cost

The application fee varies depending on your location. (A brief online search uncovered a wide discrepancy from £60 to £186 to register a new individual address.)

How long does it take?

Straightforward applications are typically processed in 5 to 6 weeks. But if your site is complex, or if there’s a need for public consultation (especially for new streets), it could take longer.

Your local authority will also check for address conflicts in the area and may consult with other departments, like Highways.

Next steps

Once approved, you’ll get a decision notice confirming your new address, along with a plan showing any new streets or numbers. The local authority will also inform Royal Mail, the emergency services and other relevant organisations.

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