Air conditioning installation in Willesden

Three types of property, three different jobs

Willesden does not have one housing type, which is why quoting it over the phone is unreliable. NW10 covers at least three distinct situations.

Victorian and Edwardian terraces. Bay-fronted, solid-walled, usually with a back addition and a narrow garden. No side access, so the condenser goes at the rear — either at ground level near the back door, or bracketed above the addition roof. Pipe runs are longer than they look because the route has to go around rather than through.

Interwar semis. Towards Dollis Hill and Neasden the stock changes to 1930s semi-detached with side alleys and cavity walls. These behave like Edgware: easier access, tidier penetrations, shorter runs.

Converted and purpose-built flats. A large and growing share of NW10. Technically simple, administratively not — freeholder consent plus planning permission, because flats have no permitted development rights anywhere.

The survey exists to work out which of these you have and what it means for cost. Two houses on the same street can differ by £1,500 depending on where the condenser can physically go.

The back addition problem

Most Victorian terraces here have a two-storey rear back addition — the narrow projecting section containing the kitchen and, upstairs, the bathroom or box room. It creates the single most common design decision in NW10.

Mounting the condenser on the addition’s flank wall keeps it off the ground and away from the garden, which is usually what people want. But that wall is often within a metre of the neighbouring boundary, which affects the permitted development position, and it is frequently directly below a bedroom window — theirs or yours.

The alternative is ground level in the garden, which is easy to service and quiet from upstairs, but takes up space in a garden that may already be small.

Neither is automatically right. I will show you both positions at survey with the trade-offs spelled out, rather than picking whichever is quickest to install.

Honest advice about whether you need it

Willesden gets a fair number of enquiries I end up talking out of a full system. A north-facing bedroom that is uncomfortable four nights a year does not justify £2,500. A well-placed fan and better shading might genuinely be the right answer.

Where air conditioning earns its money in NW10:

• Loft conversions, which routinely hit 28 to 30 degrees in July and cannot be fixed with ventilation alone
• South and west-facing rooms with large glazing, especially in the newer flat developments
• Home offices, where equipment and a closed door create heat all day
• Anyone with hay fever, because the filtration is a genuine year-round benefit independent of the cooling

If your situation is not on that list, say so on the phone and I will give you a straight opinion before either of us spends time on a survey.