Faulkner Surveyors for Boundary Line Extension Cardiff

If you are planning to build a Boundary Line Extension Cardiff near your neighbor wall whether it’s a side extension, a new wall, or anything that could affect your neighbour’s property, you need a Faulkner party wall surveyor.

We are here to help and manage the legal side between you and your neighbours.

What are your neighbour’s legal rights during a boundary line extension Cardiff?

Your neighbour has more rights than many people realise when you’re working near a shared or boundary wall.

Under the Party Wall Act, they must be officially notified if your work affects the boundary or involves digging or building close to their structure.

Once notified, they have the right to:

1. Ask questions or request more detail about your plans

2. Appoint their own party wall surveyor (at your expense)

3. Disagree with the works , which doesn’t stop your project—but it does trigger a dispute resolution process through appointed surveyors

4. Request protection , like extra safeguards or monitoring, if they’re worried about damage

Theses are the steps to keep peace between you and your neighbor, its not about saying “no” to your building work, its about all building works are done fair and properly.

How does a party wall surveyor determine boundary lines?

Working out where a boundary really sits isn’t always as simple as looking at a fence or guessing based on the garden layout.

Over time, things shift—fences get moved, hedges grow, and sometimes what’s there now doesn’t match what’s on paper.

That’s where we come in. At Faulkner Surveyors, we start by checking the basics—things like your title deeds and land registry plans.

Then we come out to take a proper look at the property itself. We look at the walls, fences, old markers—whatever’s there that might give us a clue.

If things still don’t quite line up, we might check old maps, planning files, or even old photos to see what’s changed.

And when it really needs to be exact, we’ll use measuring tools or laser equipment to get it right down to the centimetre.

We not take the side, it all about giving the right information for both you and your neighbor so building work can go without stress

How much space should you leave between your wall and the boundary?

There’s no hard rule about how much space you need to leave between your wall and the boundary. But in Cardiff, it’s generally a good idea to leave about one metre.

Because that small gap makes life easier. It gives you room to walk around your building to paint, fix things, or clean the gutters—without needing permission to step onto your neighbour land.

Leaving a small gap can help you avoid problems later. It stops things like rainwater flowing into your neighbour’s garden or fences going in the wrong place. It also keeps things friendly and avoids awkward chats.

Most importantly, it reduces the chances of arguments later on.

In some cases, like with small plots or terraced houses, you might want to build right next to the boundary. If that happens, it’s best to talk to a party wall surveyor early and let your neighbour know before you start.

It keeps everything above board and avoids problems down the line. The exact allowance also depends on Cardiff Council’s planning rules, so we always check that too.

How can a Faulkner party wall surveyor help with property boundary disputes?

Boundary disputes can get stressful fast—even if they start with something small, like a fence slightly over the line or a wall built a little too close.

We start by looking at the paperwork—things like title deeds, land registry plans, or any old documents that might help.

Then we come out and take a proper look at the site to see what’s actually happening on the ground.

We talk to both parties, calmly and fairly, without taking sides.

Once we have all the details, we make a simple report that explains where the boundary probably is – or how to fix the issue if it’s not clear.

Most of the time, we are able to help neighbors come to an agreement without needing to bring in solicitors.

We keep very honest and respectful information so work can go forward without any drama