Do I Need Planning Permission for Air Conditioning in London?

Thinking of installing air conditioning in your London home? You're not alone. With increasingly warm summers and the need for year-round comfort, many London homeowners are turning to domestic air conditioning. But one of the most common questions we get at Arcas Air Conditioning is:

"Do I need planning permission for air conditioning in London?"

The answer depends on a few key factors, including where you live, the type of property, and the system you're planning to install. In this guide, we break it down for homeowners—especially those living in flats or conservation areas across London and Greater London.

When You Typically Don’t Need Planning Permission

In most cases, installing a small domestic air conditioning system in a house that is not listed or in a conservation area may fall under “permitted development rights.” That means you likely won’t need planning permission if:

• You live in a standalone house (not a flat)
• The condenser unit is installed on the rear or side of the property
• The unit is not visible from a public highway
• The unit doesn’t protrude excessively from the wall
• It doesn't exceed certain noise levels (especially at night)

However, things become more complicated if you're in a flat or conservation area.

What If You Live in a Flat in London?

Installing air conditioning in a flat usually does require planning permission in London, especially for external condenser units. You’ll also likely need freeholder consent (if you’re leasing) or to go through the building’s management company. This is because alterations to the building’s exterior—even minor ones—can affect the building's structural integrity or appearance.

Tip: In some cases, portable or indoor-only units (with no external condenser) may be a workaround if planning permission is not granted.

Planning Permission for Conservation Areas in London

If your property is in a conservation area, stricter rules apply. The purpose of these areas is to preserve historical or architectural interest, so any external alterations (like placing a condenser unit) are carefully regulated.

You will likely need to apply for planning permission if:

• Your air conditioning unit will be visible from the street
• You are altering the external façade of the property
• You live in a listed building

Every London borough has slightly different rules, so it’s best to check with your local planning authority (LPA). You can typically do this online through your borough’s council website.

What About Noise Regulations?

Noise is another consideration. Even if you don’t need planning permission, your unit must comply with noise pollution regulations. Most modern systems, especially from trusted brands like Daikin, Mitsubishi, Fujitsu, Panasonic, Samsung and Toshiba, are designed to run quietly, but placement still matters—especially in built-up areas of London.

How Arcas Air Conditioning Can Help

As a London-based installer, we’re familiar with the specific regulations and requirements for properties across the capital. We can:

• Advise whether planning permission is required for your home
• Recommend suitable systems for flats and houses
• Help with documentation or liaising with your council if needed
• Install quiet, efficient systems with minimal disruption

Want to Avoid Planning Complications?

We offer a range of discrete and compact systems that are ideal for listed buildings, flats, or homes in conservation areas. We also install indoor-only solutions where planning restrictions apply.

Contact Us Today

If you’re considering air conditioning installation in London , don’t guess—get expert advice. We’ll assess your property and provide clear guidance on what’s allowed.

• Website: www.arcasairconditioning.com
• Phone: 07723 651551
• Areas Covered: All of London & Greater London
• Emergency Support: Available 24/7