Advice for building a shed

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25 Feb 2026
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I am looking to build a shed but need a little advice and google is not helping.

It will be 3m x 1.8 x 1.8 (to save a lot of cutting) ill be using 3x2 treated timber for the frame and feather boards for the faces.

My question really is about the base, i want to build it on wood decking. I put the decking down last year as it was just a mudhole and not a useable space. The deck frame is laying on paving stones so off the ground and i used a proper treated frame timber so i think it should take any extra weight. Currently used as a cooking area for BBQs and i want the shed to protect them from the elements in the winter.

I was originally going to get a pre made metal shed but the seller advised it needs to be anchored into concrete and that only timbre could be used on the deck but im reading some things that i should not be putting a shed onto decking so looking for advice.
 
Metal sheds are prone to condensation forming inside and "raining" on the contents, so you're probably best avoiding them.
Are you looking to store the BBQs or is this a place to use them in the winter as well?
 
Cheers, mainly to store, main use will be summer months. Potentially use in winter but i have never really been able to do this. I would prefer wood shed as it will be the same as the others i have.
 
how far off the ground is your deck ?? as that will come out off your 2.5m height to avoid planning permission for your shed
 
at its highest poit its 20cm off the ground.

Didnt realise planning permission is a thing in my own back garden
 

outbuildings "

6. Near boundaries​

If the outbuilding is within two metres of the property boundary the whole building should not exceed 2.5 metres in height.

 

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