Advice on a proposed rear extension, please.

[Philipc]

Hello folks

I want to build a single storey room at the side/rear of my house.  A simple, wooden framed, dwarf brick wall conservatory.  No knocking through walls etc. It would be within one metre of the boundary (my neighbour is fine with this). The room would project one metre out from the side of the house.  The house faces onto a road.  The room would be 4.5 metres long.  See attached sketch.

 

I assume planning permission will be required, but I’d like to 'second guess' the likely outcome of any such application, before I waste too much time/cash.   Or indeed whether there are things I could consider, which might make any application more likely to succeed?

 

What does Build Hub think?  

 

Thanks in anticipation. 

 

[DevilDamo]

From a Planning perspective, you will require Prior Approval or Householder approval.

 

If it meets the definition of a conservatory, it would be exempt from Building Regulations.

[Philipc]

Thanks for this response

 

"If it meets the definition of a conservatory, it would be exempt from Building Regulations"

 

By this you mean if it met the definition of a conservatory, it would not require planning permission?  forgive my ignorance of the terminology.  

[DevilDamo]

No. You will require Planning. You will not require Building Regulations if it meets the definition of a conservatory…

 

https://www.planningportal.co.uk/permission/common-projects/conservatories/building-regulations

 

Planning and Building Regulations are completely different things.

[TommoUK]

7 hours ago, Philipc said:

Hello folks

I want to build a single storey room at the side/rear of my house.  A simple, wooden framed, dwarf brick wall conservatory.  No knocking through walls etc. It would be within one metre of the boundary (my neighbour is fine with this). The room would project one metre out from the side of the house.  The house faces onto a road.  The room would be 4.5 metres long.  See attached sketch.

 

I assume planning permission will be required, but I’d like to 'second guess' the likely outcome of any such application, before I waste too much time/cash.   Or indeed whether there are things I could consider, which might make any application more likely to succeed?

 

What does Build Hub think?  

 

Thanks in anticipation. 

 

Probably permitted development if it’s single storey and less than 3m height at the eaves. This doesn’t require planning permission if you meet the requirements. Look up “permitted development - side extensions” on the planning portal.

Edited August 30, 2024 by TommoUK

[DevilDamo]

1 hour ago, TommoUK said:

Probably permitted development if it’s single storey and less than 3m height at the eaves. This doesn’t require planning permission if you meet the requirements.

A little contradictory there. It is not PD. It would require Prior Approval or Householder approval.

[TommoUK]

There is only a requirement for Prior Approval for certain types of Permitted Development.  Prior Approval is a further step, between PD and full planning permission.  If this extension meets all the other criteria it’s not mandatory to seek prior approval. 

Edited August 31, 2024 by TommoUK

[DevilDamo]

@TommoUK The OP’s hasn’t stated whether they’re attached or detached. However, their proposed extension is more than 4m deep. It therefore requires Prior Approval or Householder approval. It could not be any more straight forward.

[TommoUK]

I stand corrected. Good point. I guess the work around is to reduce the extension within the prescribed limits if they don't want prior approval.