Help end medical misogyny. Sign our petition.

Help end medical misogyny.
Sign our petition.

Sign the petition

Please or to access all these features

Property/DIY

Join our Property forum for renovation, DIY, and house selling advice.

Mice infestation - how to reflect in price / sale negotiations?

112 replies

Weneednewnames · 28/05/2026 07:11

I'm buying a property that has thrown up a few issues, one of which is mice infestation. It's a bigger problem than I realised, minimum £10k to address it (but potentially much higher if there's electrical damage). I'm not willing to pay to eradicate a long-standing problem that long predates this purchase. How do I address this in negotiations?

Sorry this is so long!!!

The property was advertised at £375, and had lots of interest. It's a probate, currently empty. After a best & final process my offer of £390k was accepted. This says a lot about the desirability of the property as our local market is very slow right now.

I had a Level 3 survey which found extensive rodent infestation and then a pest control survey. I used a company that were recommended to me by a friend who found they were the only company that eradicated an embedded rat infestation in her property. In my case it's mice, not rats (good news) but it is very well established with "vast" evidence in loft and other evidence in kitchen (bad news).

The quote for fully dealing with this is massive - £400 for the extermination but 4k for identifying and sealing all entry points and 5k for loft cleaning, including clearing the infested insulation. Then another £2.5k to lay new insulation. The cost for removing insulation is high is because a) it's a massive loft (bungalow), b) has vermiculite insulation as well as standard fibreglass - huge pain to removek and c) is sodden with decades' worth of rodent urine and faeces (yuck). Further complication is that vermiculite insulation may contain asbestos. It's unlikely that it IS asbestos, but if it is, the removal needs to be specialist and will add another £15k to the cost because the loft is massive and there is a huge amount of it

What do I now? There are two options - which is either that the sellers deal with it before exchange, or that I do it after completion and it is reflected in the price.

If before exchange, I very much doubt that the sellers want to pay £10k for rodent treatment. However, without removing the infested insulation it's impossible to assess damage to electrical wiring, as this is laid below the insulation. AND the insulation needs to be tested for asbestos (£500).

If we wait til completion, I can't fully assess the risk & damage, and as I have pets who can't be in property during the treatment (and because I'm not willing to move while the infestation is in kitchen etc) then I would have to stay in my current rental for a couple of months til it's dealt with, which adds more costs and more time.

What is the best way forward here? Both options have massive costs - if sellers do it is £10k upfront, even I I cover the costs of laying new insulation. If I do it, the full cost, with new insulation and two months more in rented accommodation, is likely closer to £20k even if there is no electrical damage. That seems an absolutely massive price reduction for mice. But I don't want to accept a mouse-infested property!!

What do I do? How do I word the email to the EA? I am willing to walk away over it - the property also needs lots of other things done and my budget definitely cannot accommodate an extra 20k-40k for rodents.

(Also - yes, I could get other quotes and this could definitely be worth doing for the loft insulation clearance, but the extermination & proofing work (£5k) I strongly want to do with this firm since they seem to have the best chance of actually solving the problem. And the loft clearance is a big job - huge amount of vermiculite, rodent infested boards, rodent infested fibreglass insulation. So even a cheaper firm might only save £1-2k in best scenario).

OP posts:
DeftWasp · 21/06/2026 07:40

Weneednewnames · 21/06/2026 07:19

hello all, I always like it when a thread gets resolved, so just popping back to say that I withdrew from this sale. I didn’t ask for a price reduction but sent the rodent survey so that they could see it for themselves and said that without clear roof and asbestos costs it was too uncertain for me to proceed. I thought they might offer a reduction (or confirm I could do the surveys I needed) but they just said they were disappointed it hadn’t worked out and best of luck with my house search. It’s been re listed and so far doesn’t seem to have sold. I feel really uncomfortable about the way it worked out, and oddly guilty about not proceeding. But also massively relieved not to have continued at a price I’m certain I’d have regretted. Thanks for all the advice here, which helped keep my resolve strong and confirmed that I wasn’t overreacting.

You did the right thing, clearly they are in no rush to sell - but they will probably loose out in the long term as the problem is not going away and the property market is poor at the minute. Good luck finding something better!

Thingamebobwotsit · 21/06/2026 08:34

You did the right thing. Just taking the infestation, well established ones are a real hassle to get rid of, and with all the other issues it wouldn't have been worth the grief. Don't feel guilty. The executors have chosen to roll the dice again, not you. They could have reduced - but may also have faced accusations of not trying to achieve best value on the estate. You just don't know what goes on behind closed doors.

Have you found anything else yet? Good luck in your search.

Duvetdayforme · 21/06/2026 08:35

Pull out

ChimpanzeeThatMonkeyNews · 21/06/2026 10:35

The mice are bad enough, but the asbestos is an absolute disaster.

JohnofWessex · 21/06/2026 11:23

Presumably the mice issue needs to be mentioned to potential buyers now/

Gonnagetgoingreturnsagain · 21/06/2026 11:45

Weneednewnames · 21/06/2026 07:19

hello all, I always like it when a thread gets resolved, so just popping back to say that I withdrew from this sale. I didn’t ask for a price reduction but sent the rodent survey so that they could see it for themselves and said that without clear roof and asbestos costs it was too uncertain for me to proceed. I thought they might offer a reduction (or confirm I could do the surveys I needed) but they just said they were disappointed it hadn’t worked out and best of luck with my house search. It’s been re listed and so far doesn’t seem to have sold. I feel really uncomfortable about the way it worked out, and oddly guilty about not proceeding. But also massively relieved not to have continued at a price I’m certain I’d have regretted. Thanks for all the advice here, which helped keep my resolve strong and confirmed that I wasn’t overreacting.

Well done for you to sticking to your resolve and listening to replies here!

An ex boyfriend of mine told me years ago when he bought I think a pre fab house that had had mice in the walls. He resolved it and sold it on though. It was a cheap house to buy. He then bought a lovely dockside flat at a reasonable cost with no issues at all.

So you will find something eventually/soon. Good luck!

DeftWasp · 21/06/2026 12:10

JohnofWessex · 21/06/2026 11:23

Presumably the mice issue needs to be mentioned to potential buyers now/

Technically, legally, yes, but of course they can throw away the survey and say nothing - chances of them getting caught is pretty slim.

user1471538283 · 21/06/2026 14:02

You are not stupid, you weren't to know about mice!

I viewed all sorts in my quest for a bungalow. One was marketed as needing updating and the electrics were older than me (I'm not young).

I've bought a probate bungalow that needs work and that stresses me out enough without the thought of a mouse infestation.

I think you are being smart to walk away. There will be another just right for you!

BalticTellin · 21/06/2026 14:38

Thank you for updating OP, and best of luck finding another property.
I think you were absolutely right not to proceed.

Laura95167 · 21/06/2026 15:18

DeftWasp · 21/06/2026 12:10

Technically, legally, yes, but of course they can throw away the survey and say nothing - chances of them getting caught is pretty slim.

But if OP wanted to put it on social media im sure we could help it go viral..

Iamthemoom · 21/06/2026 15:34

edited on update!

GertieLawrence · 21/06/2026 17:29

Weneednewnames · 21/06/2026 07:19

hello all, I always like it when a thread gets resolved, so just popping back to say that I withdrew from this sale. I didn’t ask for a price reduction but sent the rodent survey so that they could see it for themselves and said that without clear roof and asbestos costs it was too uncertain for me to proceed. I thought they might offer a reduction (or confirm I could do the surveys I needed) but they just said they were disappointed it hadn’t worked out and best of luck with my house search. It’s been re listed and so far doesn’t seem to have sold. I feel really uncomfortable about the way it worked out, and oddly guilty about not proceeding. But also massively relieved not to have continued at a price I’m certain I’d have regretted. Thanks for all the advice here, which helped keep my resolve strong and confirmed that I wasn’t overreacting.

So relieved to hear this OP. You definitely don’t need your new start to be overshadowed by worrying problems. Mice give me the heebie jeebies so badly.

New posts on this thread. Refresh page