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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Neighbours Garden Office

349 replies

Soontobesingles · 29/04/2025 15:19

My neighbours have recently started having work done to add an office/summer house thing to their garden. No planning permission and it is absolutely massive - to the point it will put 1/2 my lovey sunny garden in shade. I have told them that it is too high and they need planning permission. Builders insisting they don’t as something to do with a slope in the garden but rules are about height from foundations. Anyway, I have said I will report if it isn’t sufficiently reduced and both neighbour and builders are going mad saying £1,000s already spent on materials and plans, labour etc. AIBU to say I don’t care an will report? My garden is my sanctuary and many of my plants will die if shaded year round.

OP posts:
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Iwanttoliveonamountain · 29/04/2025 20:32

I wouldn’t bother discussing it with your neighbours. Use planning portal.co.uk. You can click on your local authority to find out the specific rules but if it’s within 2 m of your boundary it can’t be high than 2.5 m itself. Let’s just say they were given bad information by the builder.

100Bees · 29/04/2025 20:33

I know a diagram will help. In your case, as long as the building doesn't cover more than 50% of the curtilage around the property, this is permitted development.

Neighbours Garden Office
CountryCob · 29/04/2025 20:44

Soontobesingles · 29/04/2025 15:42

It’s 4.5m and it is on our property boundary. As in at the edge of the shared fence. These are tiny London townhouses with small gardens not mansions.

At that scale would it need a party wall agreement?

Datafan55 · 29/04/2025 20:45

ThisOldThang · 29/04/2025 20:32

If planning permission allows it, then I can't really see why you think you have a right to control your neighbour's property. If you didn't take potential developments into account when you bought your property, you're a bit of a fool, aren't you?

@MyNameIsX - I was actually going to mention that in my original reply. It always seems that the NIMBYs squeal and moan about extensions and then ten years later they've all done exactly the same thing. I expect you still think you're somehow superior to the people you're now copying. 🙄

It's like when a Lidl or Aldi opens a store and they all loudly complain about the lowering of the tone and impact upon house prices, but then end up shopping there.

For a start, the entire thread is about whether it is permitted or not, with many thinking it wouldn't be, and the OP saying in her first post 'no planning permission'.

And second, things such as a 4.5m structure that puts half of OP's garden in the shade ... Well, I think you can work out why OP might be 'policing it'.

Tangerinenets · 29/04/2025 20:46

We built a summer house a few years ago and the lady behind complained saying it was too big and too close to our house. It doesn’t affect her in any way, shape or form. It is in the same place as the previous garage was that was falling down. Someone from the council came and agreed it didn’t affect her and we didn’t need planning permission but asked us to lower the pitch of the roof. It wasn’t a massive job so we did just that. It actually looks bigger now as the roof is flatter. If the roof hasn’t been done yet then it’s no problem to lower the pitch.

ThisOldThang · 29/04/2025 20:51

Datafan55 · 29/04/2025 20:45

For a start, the entire thread is about whether it is permitted or not, with many thinking it wouldn't be, and the OP saying in her first post 'no planning permission'.

And second, things such as a 4.5m structure that puts half of OP's garden in the shade ... Well, I think you can work out why OP might be 'policing it'.

The OP has stated that there is a slope and her garden is stepped down, so it's presumably quite a steep hill.

I'm guessing that this is the Crystal Palace area of London with housing built upon very steep gradients.

As per @100Bees's excellent diagram, it could easily be 4.5 metres at the boundary and still the correct height based upon the horizontal from the highest point.

DrPrunesqualer · 29/04/2025 20:52

A diagram / section through to show the slope would be helpful but
if neighbours land is higher than yours the max ht is taken from the highest point. If you land slopes away from your neighbours then their building will invariably be higher than the max allowed as seen on your land OP because you are lower than them.

Minimili · 29/04/2025 20:55

LakieLady · 29/04/2025 16:40

The people across the road from me have done exactly the same, also on a sloping site.

A former colleague lives in the house that backs on to them. They were livid, as the slope means that the "garden office" rises several feet above his fence and shades his garden. They contacted the council, who said that it didn't need planning permission, partly because it had no cooking facilities and therefore couldn't be used as a dwelling, and that height wasn't an issue because the building was within the permitted height at the front.

However, it does have a toilet and shower room. Within weeks of it being finished, it was listed on airbnb, with a kettle, toaster and microwave clearly visible in the pictures. Former colleague was livid, and got on to the council, who said it still doesn't count as a dwelling because the microwave etc doesn't constitute "cooking facilities".

For years, it was used regularly by airbnbers, who often seemed to rock up in two cars in a street where parking is very limited. On more than one occasion, I had people knock on my door, sometimes very late at night, because they've mislaid the number for the keysafe and can't get in, and the owners were away. Thankfully, they rarely have guests these days and it's no longer listed on airbnb.

They managed to piss off loads of people at our end of the road though, especially as they've now got planning permission to extend the house sideways which will near double the size of it.

I don't think YABU, OP, but sadly I doubt if there's anything you can do about it.

That sounds like my worst nightmare.

I had neighbours try to do similar but they had so many complaints that luckily it was dealt with and although they didn’t have to pull it down they were stopped from renting it out of having anyone staying in it overnight so at least the noise stopped.
Everyone in neighbouring houses were so relieved the noise and comings and goings had ended that we just put up with the extension afterwards, it caused a lot of drama and arguments and no one spoke to the people who built it afterwards.

DrPrunesqualer · 29/04/2025 20:56

DrPrunesqualer · 29/04/2025 20:52

A diagram / section through to show the slope would be helpful but
if neighbours land is higher than yours the max ht is taken from the highest point. If you land slopes away from your neighbours then their building will invariably be higher than the max allowed as seen on your land OP because you are lower than them.

This attached from an online discussion confirms what I and others have said about measuring the height from the highest point.

Neighbours Garden Office
heroinechic · 29/04/2025 20:56

@Datafan55 many posters think it isn’t PD because the OP said it was 4.5m in height, however, OP also thought that the height should be measured from the foundations rather than the highest point so the measurement she has taken is likely not the relevant measurement. She also hasn’t clarified whether the measurement was taken from her garden or from her neighbours garden, or what roof pitch the building has. There’s a lot of variables!

Tripleblue · 29/04/2025 20:56

I sympathise. What selfish silly people. It will be looking into your living and sleeping area windows too as well as taking the light away.
Put a desk against a windowsill upstairs, looking into your garden/their office so they can have some company.
Selfish thoughtless stupid individuals. The damage the not so bright do is terrible.
Report it. Nobody needs an overbearing monstrosity overlooking their garden.

MintSnail · 29/04/2025 20:57

Slope/ elevation is material, if their garden is below the height of yours then it gives them more height to play with. It sounds like they have broken the permitted development rules though. Report it to your local planning team who will visit and sort it. If they are useless I can recommend https://www.gardenlaw.co.uk/ forum for getting some pointers in how to get it sorted. Generally nuisance angles are more successful than right to enjoy your property. You will probably also need z full land survey of your garden to show the elevations etc and demonstrate where the rules have been broken. Bl00dy good luck 💪

Garden Law advice on fences, trees and boundaries

Garden Law:a web page covering legal issues relating to walls,boundaries,trees,hedges,pets and neighbours together with a garden chat page to share your experiences

https://www.gardenlaw.co.uk

Tripleblue · 29/04/2025 20:58

Tangerinenets · 29/04/2025 20:46

We built a summer house a few years ago and the lady behind complained saying it was too big and too close to our house. It doesn’t affect her in any way, shape or form. It is in the same place as the previous garage was that was falling down. Someone from the council came and agreed it didn’t affect her and we didn’t need planning permission but asked us to lower the pitch of the roof. It wasn’t a massive job so we did just that. It actually looks bigger now as the roof is flatter. If the roof hasn’t been done yet then it’s no problem to lower the pitch.

Edited

Karma will come and get you 😊

MasterpiecesofthePuzzle · 29/04/2025 20:59

SharpOpalNewt · 29/04/2025 17:53

Maybe you should have kept your neighbours informed. A pub down the garden sounds like a bloody nightmare to live next to.

If it doesn't meet planning rules the council can ask them to demolish it.

It does meet planning. Did you read it?

Minimili · 29/04/2025 21:00

Barney16 · 29/04/2025 16:49

Off topic but I have missed BizzyLizzy, cos she's been deleted and now I'm very curious.

I was curious as well and wondering the same. I tried to search the user name but the posts have been removed now.

I was hoping someone could give us the gist of what was posted without breaking the guidelines.

Northumberlandgirl · 29/04/2025 21:03

Height:
A garden office must be single-story with a maximum eaves height of 2.5 meters. The overall height, including the roof, can be up to 4 meters for a dual-pitched roof, or 3 meters for any other roof type, unless it's within 2 meters of a boundary, where the overall height is limited to 2.5 meters.

Location:
The garden office cannot be placed forward of the principal elevation of the house (generally the front of the house). It also cannot be closer to a public road or footpath than the main house.

Coverage:
The total area of buildings, including the garden office and any other existing outbuildings, cannot cover more than 50% of the land surrounding the "original house" (which includes any extensions or outbuildings built on the property since 1948).

Use:
The garden office can be used for a variety of purposes like a home office, study, or workshop, but it cannot be used as a living accommodation, such as a bedroom or a self-contained dwelling.

Exceptions:
If the garden office is used as a sleeping accommodation, it will require planning permission. Also, if it is within the curtilage (the grounds) of a listed building, planning permission will be required.

In summary, a garden office can be built under permitted development in London, but it must comply with the specified height, location, coverage, and use restrictions. If any of these rules are not followed, you will need to apply for planning permission.

Planning Permission - Outbuildings - Planning Portal
Outbuildings are considered to be permitted development, not needing planning permission, subject to the following limits and con...

Planning Portal

Planning Permission Requirements for Garden Rooms - Crown Pavilions
Your garden room must be single-story and have an eaves height of no more than 2.5m from ground level. Including your roof, you ca...

Crown Pavilions

Garden Rooms in London — Architecture for London

Architecture for London

Show all
Generative

DrPrunesqualer · 29/04/2025 21:04

MintSnail · 29/04/2025 20:57

Slope/ elevation is material, if their garden is below the height of yours then it gives them more height to play with. It sounds like they have broken the permitted development rules though. Report it to your local planning team who will visit and sort it. If they are useless I can recommend https://www.gardenlaw.co.uk/ forum for getting some pointers in how to get it sorted. Generally nuisance angles are more successful than right to enjoy your property. You will probably also need z full land survey of your garden to show the elevations etc and demonstrate where the rules have been broken. Bl00dy good luck 💪

OPs garden is at a lower level to her neighbours. Hence the new building whilst within permitted development rights ( assuming it is ) within her neighbours garden it would be higher on OPs side.
That is acceptable

Tripleblue · 29/04/2025 21:04

heroinechic · 29/04/2025 20:56

@Datafan55 many posters think it isn’t PD because the OP said it was 4.5m in height, however, OP also thought that the height should be measured from the foundations rather than the highest point so the measurement she has taken is likely not the relevant measurement. She also hasn’t clarified whether the measurement was taken from her garden or from her neighbours garden, or what roof pitch the building has. There’s a lot of variables!

What matters is they built something looking into her garden and taking the light away from the garden and some of the house.
Scum

HollidayRanger · 29/04/2025 21:04

Minimili · 29/04/2025 21:00

I was curious as well and wondering the same. I tried to search the user name but the posts have been removed now.

I was hoping someone could give us the gist of what was posted without breaking the guidelines.

It was an AI bot

Allseeingallknowing · 29/04/2025 21:13

eqpi4t2hbsnktd · 29/04/2025 16:00

We reported our neighbours for their hideous oversized rear extension... the council did nothing.
I would repot them but be prepared to fall out with them and nothing actually get done.

Repotting the neighbours? Seems a bit extreme!

Lassango · 29/04/2025 21:13

Complain to your local councillor (if you have a good one) and ask them to raise it with the Planning Department for you. Councils tend to actually deal with complaints from Councillors.

Londonrach1 · 29/04/2025 21:15

I'd report. If doesn't need planning it's not an issue but sounds like it does

DiaryofaProvincialLady · 29/04/2025 21:15

Soontobesingles · 29/04/2025 15:24

DH measured and it is way above the regs. They are trying to gaslight by arguing about the slope in their garden, hoping we will calm down. We have lived here years and always got on with them so think they are surprised we are so cross.

That's not what gaslighting means.

Outrageistheopiateofthemasses · 29/04/2025 21:15

Absolutely yes, you should report this.

heroinechic · 29/04/2025 21:15

@Tripleblue well that’s what matters to the OP, but that doesn’t matter to anyone else if the development falls within the permitted development rules

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