Sealing the gaps rats and mice use is simple in a house you own outright. In a Finchley conversion, the outside wall, the air bricks, the hallway and the space under the floor may belong to the freeholder, and working on them needs the right person's say-so first.
Rodent proofing is £180 for up to one hour of work on small holes. Book rodent proofing online or call 0800 955 2347.

Most of the gaps rodents use are in the fabric of the building rather than inside a flat. In a leasehold house divided into flats, that fabric normally belongs to the freeholder, and the lease will usually say that leaseholders cannot alter the structure or the outside walls. So before any work is booked, it is worth being clear who can agree to it.
Gaps around pipes under your own sink, behind your kitchen units or where a cable enters your own cupboard are generally yours to deal with, whether you own the lease or, with the landlord's agreement, rent the flat. These are the jobs a leaseholder can usually book directly.
A cracked air brick at the base of the front wall, a hole where the ground-floor waste pipe leaves the building or a gap in the meter cupboard in the hall are usually the freeholder's. Ask the freeholder or managing agent to agree the work, or to book it themselves. Where the leaseholders share the freehold, one of them can usually agree it for the building, but check how your company or agreement works.
If you rent, the landlord's permission is needed for work to the building, and the landlord may need the freeholder's as well. Tell your landlord which gaps you think are involved and let them arrange it. Pest Control Finchley sets out who normally arranges what in a converted house.

Victorian and Edwardian houses near the stations tend to share a set of weak points, most of them low down at the back and side. The most common entry points gives the fuller list.
Air bricks have to keep letting air through to the floor, and stopping rats at air bricks explains how that is done without blocking them.
The £180 is for up to one hour of work on small, reachable holes and gaps. In a conversion that might be the gaps around the ground-floor pipes and a damaged air brick, depending on how many there are and how easy they are to get at. Repointing a crumbling wall, rebuilding a rotten door frame or relaying broken paving is for a builder, and a faulty drain is for a drainage contractor or the water company. You will be told if that is what the building needs.

Proofing belongs after the rats or mice have been dealt with. Sealing a gap they still use can shut them inside a floor void between two flats, where they gnaw a new way out, often into someone else's kitchen. Book rat control or mouse control first; before or after treatment explains the order.
When you book, tell us whether you own, rent or manage the building, whether the freeholder has agreed to work on the outside or common parts, and where you think the rodents were getting in. Move bins away from the side wall and make sure the meter cupboard and under-sink cupboards can be opened. Afterwards you will hear which gaps were closed; which holes rodents are using helps if you spot new signs.
For the gaps found in other kinds of Barnet housing, see Rodent Proofing Barnet.
Rodent proofing in Finchley is £180 for up to one hour of work sealing small holes and gaps. It is the same for a flat or a house; how much gets done depends on how many small gaps there are and whether they can be reached in the hour. Building repairs are outside it, and work on a converted house's outside walls or common parts needs the freeholder's agreement first.
| Treatment | Price |
|---|---|
| Rodent Proofing | £180 – up to 1 hour, small holes |
For gaps inside your own flat, usually yes. For air bricks, outside walls or the hallway, check your lease and ask the freeholder or managing agent, then book once they have agreed.
The hall and its cupboards are common parts, so it is normally for the freeholder to arrange and pay, often through the service charge. Tell the managing agent, if there is one, what you have found.
The three of you are the freeholder, so work on the structure is a joint decision. It helps to agree it in writing and let one person book and give access.
No. They ventilate the timber floor, and blocking them can lead to damp and rot. A damaged one can be covered in a way that keeps the air moving, as proofing pipe and utility gaps also explains for pipes.
Smaller than most people expect, and what size hole a mouse can get through gives the detail. Gaps around pipes between flats are often wide enough.
It closes the gaps into your part of the building, but it cannot stop mice already living in a shared void. It works best once every affected flat has been treated.











Tell us whether you own, rent or manage the building, whether the freeholder has agreed to the work, where the gaps are, and your postcode.
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