Corner plots can look like the dream when you’re thinking about extending.
You’ve often got more land to the side, more space around the house and what feels like an obvious opportunity to make a small property much bigger.
And then you start looking at the planning rules.
Suddenly that lovely side garden may also be a second street frontage. The boundary you thought you could build towards might need to stay open. And what looked like a straightforward side extension starts to become a much more interesting planning exercise.
I recently spoke to homeowners with exactly this problem.
They own a small 1930s semi on a corner plot and are planning to eventually move into it themselves. The house works as a rental, but for them it is simply too small. The aim isn’t to create a huge house. They want to make it comfortable, practical and somewhere they can live happily as they get older.
The corner plot looked like the opportunity
Their first thought was probably the same one most of us would have:
We’ve got all this space at the side, surely we can build into it?
An architect had already prepared some initial proposals, but the design had been kept fairly tightly within what were understood to be the planning constraints.
The clients wanted to know whether it could be pushed a little harder.
Could the extension come further forward?
Could they create more of a wraparound extension?
Could they make better use of the side of the house rather than leaving valuable space outside?
And, importantly, was the planning guidance being treated as an absolute limit when there might actually be some room for discussion?
Planning isn’t always black and white
One of the difficult things about domestic planning is that people understandably expect there to be a simple rule:
“You can build this far.”
“You must stay two metres from here.”
“This elevation is the front.”
But corner plots often aren’t that simple.
You can read a policy and form one interpretation, while the planning officer may take another view based on the character of the street, the prominence of the extension or which elevation they consider most important.
I’ve had projects where a principle appeared to have been established at pre-application stage, only for it to be questioned again once the full application was submitted.
That is why I would be wary of designing a whole project around the assumption that one planning interpretation is guaranteed.
Should you get pre-application advice?
For this project, the clients asked whether they should make a pre-application enquiry to the council before doing anything else.
My instinct was actually to go straight to a planning application.
Why?
Because by the time you’ve developed the design enough for the council to give useful pre-application advice, you have already done a large proportion of the design work.
And a pre-app response still isn’t a planning approval.
With a proposal like this, I’d rather work out what the clients actually want, take the scheme as far as I think is realistic, and then submit it.
The planning officer might come back and say:
- pull the extension back slightly
- reduce part of it
- don’t take the two-storey section that far
- retain more space to the boundary
That’s not necessarily a disaster.
Planning applications often involve a bit of dialogue and adjustment.
The important thing is that you have started with the scheme you actually want rather than designing something overly cautious from day one. That’s exactly what we discussed on this project.
When would I use a pre-app?
There are certainly situations where I would.
If there is a really big question of principle, particularly something that could completely change whether a project is viable, getting early planning input can be worthwhile.
But I wouldn’t automatically recommend a pre-app simply because a house is on a corner.
Sometimes it just adds another stage without giving you the certainty you were hoping for.
Start with the layout, not the planning line
Before getting too bogged down in planning, I think there is another question to answer:
What is actually the best house we can create here?
In this case, the previous design had tried to accommodate a lot of different requirements, including maintaining space for a car.
But that had resulted in the extension stopping short, even though maximising the living space was one of the main objectives.
That is where concept design becomes really useful.
Rather than drawing one answer, I’ll usually look at several.
Some might be deliberately ambitious.
Some might be much simpler.
And somewhere between those extremes is often the scheme that feels right.
For this project we’ll be looking at the whole house, including the kitchen, utility space, downstairs WC, bedrooms and bathroom, rather than seeing the extension as a separate box stuck onto the side.
Don’t assume bigger is automatically better
The temptation with a corner plot is to fill the space.
But a good extension isn’t necessarily the biggest one planning will allow.
We still need to think about:
- how you arrive at the house
- whether the kitchen works properly
- where furniture actually goes
- whether you can still get into the garden
- where the utility room belongs
- how much natural light reaches the original rooms
- and whether you’re spending a lot of money creating floor area you don’t really need
One of the reasons I like drawing furniture onto concept plans is because it very quickly exposes whether a room actually works.
A kitchen isn’t successful because it looks big on a plan.
It needs to accommodate the fridge, sink, hob, storage, table and the way people actually move through it.
Think about the house you’re going to need in ten years
Another interesting part of this project is that the owners aren’t extending for a young family.
They’re downsizing.
They currently live in a much bigger house and want something more manageable, but they don’t want to squeeze themselves into a property that feels like a compromise.
They’re also thinking ahead about avoiding unnecessary stairs and creating a house that will continue to work as they get older.
That changes the design brief completely.
It isn’t about getting the maximum number of bedrooms.
It’s about getting the right spaces in the right places.
And that’s why I think it is worth doing the design work before becoming too fixated on exactly where a planning line might sit.
So, how do you get a corner plot through planning?
My approach would be:
- Understand what you actually want from the house.
- Look at several design options rather than immediately settling on one.
- Understand the local planning constraints, but don’t necessarily treat every guideline as the starting point for the design.
- Put forward a scheme that is ambitious but still defendable.
- Be prepared to negotiate and amend it if the planning officer has concerns.
And most importantly, don’t assume that having a corner plot is either a planning disaster or a licence to build everywhere.
Every site is different.
Sometimes that side garden really is your golden ticket.
Sometimes it isn’t.
The job is to find out how far you can sensibly push it.
Thinking about extending a corner plot?
If you’ve got a house with a large side garden and you’re wondering whether you can extend into it, a concept design workshop can be a really useful first step.
We can look at the house, test different layouts and work out what is worth pursuing before you spend money developing a full planning scheme.
