Replace the Existing Fence or Install One in Front?

If your neighbour's fence is damaged, leaning or simply no longer fit for purpose, you may be wondering whether it's better to replace the existing fence or install a new one directly in front of it. While putting up a second fence can seem like the quickest and easiest option, it often creates more problems than it solves.

Having seen this situation arise many times, replacing the existing fence is usually the better long term solution.

Why Homeowners Consider Installing a Fence in Front

There are several reasons why someone might choose to install a new fence in front of an existing one:

• The neighbour does not want to replace their fence.
• There is uncertainty about ownership and responsibility.
• Installing a second fence appears quicker and easier.
• The existing fence still provides some level of boundary definition.

At first glance, adding a new fence on your side of the boundary can seem like a sensible compromise. However, there are some significant drawbacks that are often overlooked.

The Maintenance Nightmare Between Two Fences

One of the biggest issues with installing a fence in front of an existing one is what happens to the space between them.

Even a small gap can quickly become a breeding ground for weeds, bindweed, brambles and ivy. Over time, vegetation grows through, under and over both fences, making maintenance increasingly difficult.

From experience, keeping this area clear often becomes an awkward and time consuming task. In many cases, the only practical way to remove weeds is to lift fence panels, prop them up and work in the narrow space between the fences. Few homeowners want to spend their weekends carrying out this type of maintenance year after year.

The problem becomes even worse when climbing plants become established. Ivy and bindweed can cause damage to both fences while creating an untidy appearance on both sides of the boundary.

The above image shows a fence installed in front of another.  This has caused weeds to grow between the fences and cause the fence to rot.  It was impossible to weed between them and the fence had to be replaced.

Rodents Love Hidden Spaces

Another issue that is rarely considered is pest control.

The enclosed gap between two fences creates a sheltered environment that can attract rodents and other unwanted pests. The combination of cover, warmth and overgrown vegetation can make these areas particularly appealing to mice and rats.

While not every double fence arrangement will experience this problem, creating inaccessible spaces around a property is rarely a good idea from a maintenance or pest control perspective.

Potential Boundary Disputes in the Future

One issue that is often overlooked when installing a fence in front of an existing boundary fence is the potential for future boundary disputes.

While you may fully understand that the new fence has been installed inside your property boundary, future owners may not. If your neighbours sell their property, the new owners will only see what is physically in front of them. In many cases, they may naturally assume that the visible fence is the boundary fence, or even that it belongs to them.

Property deeds and title plans do not always provide precise measurements. Many plans show general boundary positions rather than exact dimensions. As a result, future neighbours may assume that the space between the two fences forms part of their garden, particularly if the original fence is hidden from view.

Over time, this misunderstanding can create problems. The new neighbours may begin maintaining the fence, treating it as their own, painting it, attaching items to it, or carrying out work without realising that both the fence and the land beneath it belong to you.

In some cases, homeowners have found themselves in the uncomfortable position of having to explain that the fence their neighbours believe is theirs has actually been built entirely on private land within a neighbouring property. If the second fence has reduced your garden by a foot or more, the confusion can become even greater as years pass and memories of the original boundary position fade.

Replacing the existing fence rather than building a second one helps to avoid these issues. A single, clearly defined boundary line leaves far less room for misunderstanding and reduces the risk of future disputes arising when properties change ownership.

The above image shows a gap between a fence and a wall with a fence on after it has been cleared.  This was full of overgrowth and has caused the rails to rot on the fence.  It was also a pain to clear.

The Advantages of Replacing the Existing Fence

Cleaner Installation

A single fence line creates a neat, professional appearance without gaps or hidden areas.

Easier Maintenance

There is no inaccessible space where weeds, ivy and debris can accumulate.

Better Use of Space

Installing a second fence can reduce the usable width of your garden, particularly along long boundary runs.

Improved Appearance

A properly installed replacement fence usually looks better and adds more value to the property than a fence installed in front of an older, deteriorating structure.

Long Term Cost Savings

Although replacement may require more effort initially, it often proves more economical over time by reducing maintenance and preventing future problems.

When Might a Fence in Front Be Appropriate?

There can be situations where installing a new fence in front of an existing one makes sense. For example, if legal, ownership or access issues prevent the removal of the original fence, a second fence may be the only practical option.

If this approach is taken, consideration should be given to the gap between the fences and how it will be maintained in the future. Without a maintenance plan, the area can quickly become overgrown and difficult to manage.

The Bottom Line

Installing a new fence in front of an existing one can seem like an easy solution, but it often creates a hidden maintenance burden and potential future complications. The gap between fences can become overgrown with weeds and ivy, provide shelter for rodents, and create uncertainty about where the true boundary lies.

While every situation is different, replacing the existing fence is usually the cleanest, most practical and most cost effective solution. It avoids ongoing maintenance issues, prevents confusion over ownership and boundaries, makes better use of available space and delivers a far more attractive result.

When considering your options, it is worth thinking not just about how the fence will look on installation day, but how it could affect maintenance, ownership and neighbour relations years into the future. In most cases, a single well installed fence is the better long term choice.