Are they any good? Those metal things that you can adjust the height of.
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-- wot -- — 3 weeks ago(March 12, 2026 05:40 AM)
I asked Chat GPBT
Yes — those fence post extenders are a real thing and people do use them. Your idea isn’t mad at all
They’re literally designed for the exact situation you’re describing: when the posts are already in but the fence height isn’t enough.
Here are a couple of common ones so you know what they look like:
Do they actually work?
Yes — within limits.
They’re basically a metal sleeve or bracket that fits over the existing post, then you insert a new piece of post on top and screw/bolt it together.
They’re commonly used to:
raise a fence by up to about 1 metre
add trellis panels for privacy
repair damaged or cut posts without digging them out
So technically your plan — store the landlord’s panels and put your own taller ones up — could work if the posts are compatible.
The good parts
People like them because:
No digging up posts
Cheap (£2–£10 each usually)
Quick DIY job
Reversible (good for renting)
The downsides
The main catch is strength.
Because the post is now effectively in two pieces:
they’re not as strong as a full post
tall solid panels can catch wind
if the original posts are weak or shallow, it can wobble
They work best when:
the original posts are solid and well concreted
you’re only adding 30–60 cm
the fence panels aren’t super heavy.
One thing to watch (in the UK)
If the fence faces the road or pavement, councils usually limit it to about 1 m high.
Between gardens it’s usually 2 m max without planning permission.
So if your landlord installed a low front fence, that might be why.
Your idea specifically
Your plan actually makes sense for a renter:
remove the landlord panels
keep them safe in the shed
extend posts
fit your own taller panels
put the originals back when you leave
That’s exactly the sort of situation extenders are handy for.
reversible
cheap
no permanent change
One honest tip
Before buying anything, check what the posts are:
timber 75×75mm
timber 100×100mm
concrete posts
Because the extender has to match the size. -
soapbox original gangster — 3 weeks ago(March 12, 2026 07:10 PM)
in all my years ive never had a fence on MY property. the neighbors,yes.
what does it matter the height of your fence? i can see a concern if a agile dog in the yard or a child who could get over.
