Start A Project

So you have decided to extend your home and have heard about a 6m scenario. How do you get your best 6m rear extension?

This is usually one of the key questions I receive as an Architect specialising in extending homes.

Learn the key things to note when planning a 6m rear extension, including how to navigate the approval process and avoid common pitfalls.

Straight to it, there are the key things to note.

  1. 6m to the original rear of the house (original not the existing)
  2. It must not link to any other extensions. (read more in the blog post)
  3. Your adjacent neighbours have the power of veto over the extensions.

The Main Problem with the Larger Residentials Extension Process.

First, It’s a great opportunity to get that extra meter to make all the difference with large stamp duties making moving a harder challenge.

Second, if you can crack these few complexities then it’s a great advantage for your home, creating much-needed living space and future value.

A big issue that pops up, again and again, is when a larger rear extension is used to get more space (up to 6m on a semi-detached) and is combined with a normal householder planning application. So this may be a 6m rear extension and trying to do a side extension that wraps around into the larger residential extension. So, how do you get your best 6m rear extension?

What do Local Councils think?

Councils find it hard to know if this is lawful. In permitted development, the larger residential process falls is quite black and white and rule-based. So when other elements touch it, it can create these complications. So Councils are pragmatic about combining applications, while others are actively blocking them. Harrow Council is historically difficult in these matters for example. In St Albans, we have successfully submitted hip to gable loft extensions, typically a permitted development application as a householder application. This would not be possible in Harrow for example.

Also in St Albans, we have combined larger and normal applications after each individual application is approved to combine them. St Albans will approve all of it as long as it is sensible. So you can get your best 6m rear extension sometimes.

Can Neighbours Block My 6m Rear Extension?

The next main problem we encounter is the neighbour issue.

We always advise you to seek agreement from your immediate neighbours. The Council will write to them to make sure they have no objections.

If you do get an objection, you can still get a larger residential extension. This is the top tip!

As long as the application does not prejudice your neighbour’s amenities. This means extending adjacent to the objecting neighbour by no more than 3m or what a normal extension may be or contextually what is agreeable normally at planning. A full larger residential extension can be achieved on the other side.

Final Top Tip for a 6m Rear Extension

Learning the key things to note when planning a 6m rear extension, including how to navigate the approval process and avoid common pitfalls.

If you need to get your best 6m rear extension and more, then it is possible. You just need a good architect that understands how to put things together.

Maybe there is an easier way, read this for an alternative.

For more advice on getting the best for your house, call Gordon on 02089546291

Further reading on Planning Portal


Thinking of your dream home improvement or how to start your project? 
Need your planning questions answered? Talk to an expert today.
Book a FREE 20 Minute Call with one of our home improvement Architects.

Connect with Yoop Architects...


Post Author: Gordon evans