In a Finchley house split into flats, the mice you hear may live under the floor of the flat above, behind the meter cupboard in the shared hallway, or in the void over the flat below. Your front door marks where your home ends; it means nothing to a mouse.
Mouse control is £190 for a flat and £240 for a house. Book mouse control using the form, or call 0800 955 2347.
When a Victorian or Edwardian house near the Northern line was divided into flats, the new walls and doors went in on top of the old structure. The floor void between the ground and first floors, the space behind the skirting and the runs where pipes and cables climb through the house were left connected. A mouse nesting in one of those spaces can reach the kitchens of two flats without ever crossing a landing.

If you live upstairs, droppings in your kitchen may belong to mice living in the void above the ground-floor ceiling, which is effectively under your floor. If you live downstairs, the scratching overhead may be in that same void. Either way the mice are in a space neither flat can see into, and both households are likely to be feeding them without knowing. How mice travel between flats explains the routes.

The shared entrance hall is where the gas and electricity meters for every flat usually end up, often in a cupboard under the stairs or boxed in beside the front door. The cables and pipes feeding those meters run under the floor and up through the building, and the holes cut for them are rarely filled. A meter cupboard nobody opens between readings is a quiet, dark spot with a route to every flat. Droppings on the floor of that cupboard are worth reporting.
The signs of mice has pictures in words of each of these. Larger droppings in the ground-floor flat or around the bins outside may mean rats rather than mice.
When you book a visit, say which floor your flat is on, how many flats share the house, which rooms have signs and whether neighbours have noticed anything. If the meter cupboard or hallway has droppings, say so, because those are shared areas and whoever manages the building may need to arrange access.
Clear the cupboard under the sink and the base cupboards along the outside or stairwell wall, and move the fridge forward if you can. If the meter cupboard is locked, find out who has the key.
You will be told what was found and where the mice seem to be coming from. How long it takes depends on the building and how established they are; how long mouse treatment takes explains more. Get in touch again if new droppings appear after a quiet spell.

Once the mice have gone, the gaps where pipes and cables pass between flats and into the meter cupboard are what matter. Holes inside your own flat can be sealed with rodent proofing in Finchley; holes in the hallway, meter cupboard or structure are the freeholder's to authorise. Why mice keep coming back explains why one untreated flat can undo the rest.
The Barnet-wide page, Mouse Control Barnet, covers mice in the borough's other building types.
The mice go, but the hole where the heating pipe rises through your kitchen floor stays open, so rodent proofing seals small accessible gaps inside your flat for £180 for up to one hour.
Mouse control in Finchley is £190 for a flat and £240 for a house. In a converted house each flat is priced separately, so if the ground-floor and first-floor flats both book it is £190 each; a whole interwar semi is £240. The price covers dealing with the mice in the home you book for, and shared areas such as the hallway are for the building's owner to arrange.
| Treatment | Price |
|---|---|
| Mouse Control – Flat | £190 |
| Mouse Control – House | £240 |
You may. In a converted house the void between the floors is shared, and mice move through it. Watch the cupboards on your lowest floor and book a visit if droppings appear.
It gives the best chance of the mice not coming back from an untreated flat. Each flat books and pays for its own treatment, so it helps if the flats, or the managing agent, agree a time.
The hallway and its cupboards are common parts, which in a leasehold house are normally the freeholder's to look after. Tell them or the managing agent, and mention it when you book your own flat.
Mice gnaw cable sheathing, so it is worth having an electrician look at anything chewed. Mice and wiring has more on the risk.
A whole semi is £240 and the route is usually the party wall and floor void shared with next door rather than flats above and below. How mice are getting in covers the house routes.
In a converted flat the void above your ceiling is often under the upstairs floor, and mice can live there without coming into either flat much. Where mice nest explains why voids suit them.











Tell us which floor you are on, how many flats share the house, where you have found droppings, and your postcode. For neighbouring streets, see Friern Barnet.
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