Mice in a House That Became Two Homes
A conversion rarely starts from a clean sheet. A kitchen goes into what was a back bedroom or the ground-floor back room, its waste cut through an outside wall, and water and heating pipes dropped through floors or chased into walls built for nothing of the sort. Every one of those openings is wider than the pipe passing through it. Add the ventilated void under the ground floor that the Pest Control Willesden page describes, and a mouse has a way up and a way across without ever going outdoors.
Kitchens in former back rooms
A kitchen fitted into an old back room usually has units against a chimney breast, alcove cupboards to either side and boxed-in pipework in a corner. The alcove cupboard against a disused flue is warm, quiet and hardly ever emptied, and the boxing often stops short at floor level. Droppings turn up at the back of that cupboard, or behind the fridge, long before anyone hears a thing. Where mice nest lists the other spots worth a torch.
The communal hall, the meter cupboard and the bins
Most conversions keep the original front door and a shared hall, with gas and electricity meters in a cupboard under the stairs and post, bikes and recycling boxes stacked around them. That hall touches both flats. A gap beside the meter tails, an unfilled hole where a cable was taken up to the top flat or a worn front threshold gives mice the run of the building, and bin bags left out overnight give them a reason to stay.
Loft conversions and the top flat
Where the roof has been converted, eaves cupboards open onto whatever roof space is left, and cables and pipes for the new rooms were run through joists and ceilings. The top flat then has quiet voids of its own above the flat below, and how mice reach a loft explains why height is no obstacle.
Who Arranges What in a Converted House
If you rent, tell the landlord or managing agent as well as booking, because anything beyond your own front door is not yours to treat. If you own the flat, the hall, stairs and often the cellar are the freeholder's responsibility under the lease, so that is who needs to know about droppings in the meter cupboard. A booking covers the flat it is made for, so where both flats have signs, arrange them around the same time, and whether mice travel between flats is worth reading first.
Where to Look in a Flat Above a Flat
- Droppings along the back edge of an alcove cupboard beside the chimney breast
- Nibbled packets in a cupboard that backs onto the stairs or the communal hall
- Dark grain-sized droppings on the floor of the meter cupboard or under the stairs
- Scratching in the ceiling of the lower flat in the evening, over the kitchen
- Shredded paper or disturbed insulation in an eaves cupboard in a converted loft
The signs of mice describes droppings, smells and gnawing properly. Anything larger, or noise that begins in the garden or the cellar, may mean rat control in Willesden instead.
First Steps Before Anyone Comes
- Move cereal, rice and pet food out of paper packets into tins or hard plastic tubs
- Sweep along the kickboards and behind the cooker each evening
- Ask the other flat whether they are finding the same thing, and tell the landlord or agent either way
- Leave holes open for the moment: sealing a route while mice are active can shut one inside a ceiling
- Keep poison out of a shared building, where a mouse can die in a void between two homes
Around the Visit
When you book
Say whether the address is a flat in a converted house or the whole house, which floor you are on, whether there is a cellar or a loft conversion, and where the droppings are. Mention the shared hall and meter cupboard if signs reach there, and whether the other flat has mice.
Getting ready
Empty the cupboard under the sink and any cupboard where droppings have appeared, and make sure the meter cupboard and the loft hatch can be opened. If yours is not the only flat involved, arrange access with your neighbour beforehand.
Afterwards
How long the work takes depends on the building and on whether mice are still arriving from elsewhere inside it, which how long mouse treatment takes goes into. Come back to us if fresh droppings appear after a quiet week or two.
Stopping Them Coming Back to a Converted Flat
The holes that matter in a conversion are mostly the ones the conversion made. Fill the spaces where waste and heating pipes pass through walls and floors, close the open end of the pipe boxing, and have the hole around the meter tails dealt with by whoever looks after the building. Small reachable gaps inside the flat are what rodent proofing is for, and why mice keep coming back explains what happens when they are left open. Shared houses in neighbouring Kilburn run into the same pattern, and Mouse Control Brent covers the borough.
