£190 or £240 depending on the building. But flats have a mouse problem of their own kind, and it is worth understanding before you book.
A flat is £190. A house is £240. The £50 difference is about the size and layout of the property.
For mice specifically, flats have a particular complication: they are rarely a single-property problem. Mice move readily through the service voids and ceiling spaces that connect units.
| Flat — £190 | House — £240 | |
|---|---|---|
| Rooms | Fewer | More |
| Loft | Rarely | Usually |
| Garage or shed | Rare | Common |
| Ground-floor perimeter | Limited | Full |
| Underfloor voids | Sometimes | Often in older properties |
| Service penetrations | Fewer | More |
Mice in a purpose-built or converted block are frequently a building-wide issue rather than a flat-specific one, and the reason is architectural.
Modern and converted blocks are threaded with service voids, riser cupboards, ceiling spaces and boxed pipe runs that connect one unit to the next. A mouse needs a pencil-width gap, and those routes are full of them. So mice in your kitchen may be living in a void that also serves the flat above and the one next door.
Treating your flat deals with your flat. If the population is in the communal riser, it will be back — and no amount of money spent inside your own front door changes that.
Proofing is disproportionately valuable in a flat for exactly this reason. You may not be able to fix the building, but you can make your own unit considerably harder to get into.
Read nextMouse Proofing Harrow – What Does the £180 Service Cover? →See our complete service, published prices and treatment information.
View Mouse Control Harrow →A house has more places for mice to be, and the loft is the one people forget.
A loft is warm, undisturbed, and full of insulation that makes excellent nesting material. It connects to the rest of the house through cable and pipe runs, and it is where a substantial proportion of house mouse populations actually live — while the evidence appears two floors down in the kitchen.
The £240 covers the property including the loft and any attached garage. Those are not extras.
| Property | Treatment | With proofing |
|---|---|---|
| Flat | £190 | £370 |
| House | £240 | £420 |
No. Mice range through a building, so treating properly means addressing the property rather than a room.
No. It is part of the house and part of the £240.
Tell us. Adjacent properties with a shared problem are worth discussing, particularly in a terrace or a block.
One price that never varies by property type — wasp nest treatment across Harrow is £90 fixed cost, guaranteed.
£190.
£240.
A house has more rooms, more perimeter, usually a loft and often a garage.
Blocks are threaded with service voids and ceiling spaces connecting units, so the population may not be inside your property at all.
No. It is part of the house and part of the £240.
Often yes — you may not be able to fix the building, but you can make your own unit much harder to enter.
Usually as a flat. Tell us the layout if it has its own street entrance.
No.
Tell us the property type — and if it is a flat, whether neighbours have reported the same thing.
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