A beautiful garden can be one of the main selling points when viewing a house. But while a garden may look well-kept and stylish, beneath its pretty facade there could be some warning signs that it may cause you trouble later down the line.
"When people are buying a home, the garden is often treated as a nice extra rather than something to properly inspect," Luke Dejahang, outdoor living expert at Crown Pavilions, explains.
"Buyers tend to focus on whether it feels spacious enough or how much sun it gets, but it can actually tell you a great deal about the property as a whole.
“A well-kept garden often suggests a home that has been properly cared for, while neglected or hurriedly patched-up areas can sometimes hint at more serious issues beneath the surface."
The most obvious red flags for gardens are dangerous plants and weeds, such as fast-spreading Japanese Knotweed or invasive runners like Russian vine or Himalayan balsam.
"Beyond obvious issues like Japanese Knotweed, potential buyers should look out for signs of poor drainage, water pooling after rain, soft or sinking ground, cracked patios, leaning fences, damaged retaining walls, rotting or old wooden decking and large trees planted too close to the house," Luke explains. "These are all worth noting because they can point to underlying problems that may not be immediately visible during a viewing."
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Here are the garden red flags to look out for that may make you think twice about investing in a new home.
1. Poor drainage
Poor drainage can be a real headache later on – so it's important to ask the right questions and look out for signs. Key indicators could be water puddles on the patio, muddy patches on the lawn and sunken ground.
"Poor drainage can lead to persistent waterlogging and a garden that becomes difficult to use," Luke explains. "It can also increase the risk of moisture-related issues around the property."
2. Invasive self-seeding plants
"While not as notorious as Japanese Knotweed, there are many vigorous plants, such as bamboo (the running varieties), that can spread rapidly and be extremely difficult to eradicate," Nick Woodhouse, creative director of gardens at Woodhouse & Law, explains.
"If you spot them creeping through borders or emerging from neighbouring gardens, it's worth investigating further before committing to the property."
Download a plant recognition app, like Picture This, ahead of your viewing to help identify garden plants.
3. Cracked patios or walls
"Cracks or movement in paving and walls can worsen if left alone and may develop into more significant structural concerns," Luke advises.
"In some cases, what looks like a simple cosmetic fix can turn into a much larger project once the real issue is uncovered, so it is always better to investigate early rather than deal with it after the sale has gone through."
4. Gardens that are completely overlooked
"While planting can provide privacy over time, neighbouring windows that look directly into the garden can be difficult to overcome," Nick explains. "Creating privacy often requires carefully positioned trees or built structures, all of which take time and investment to establish."
We have a guide on how to make an overlooked garden feel more private if you do want to take on the challenge.
5. Rotting decking
Rotting decking can be a harder job to resolve than many initially think.
"Rotting decking can become unsafe and costly to replace, while large trees or roots can create problems with drains, boundaries and ground movement, which can be far more disruptive to put right later on," explains Luke.
6. Excessive shade
A garden that receives very little direct sunlight can dramatically affect how you use the space and what will grow in it successfully.
Nick explains: "North-facing gardens aren't necessarily a problem, but if they're also surrounded by tall buildings or dense evergreen trees, you may find yourself limited to much narrower planting opportunities and with fewer opportunities for sunny seating, entertaining or growing vegetables."
7. Potential boundary disputes
"It is also worth paying close attention to where the boundaries sit and whether they look clear and agreed," Luke explains. "Overgrown hedging, misplaced fences or unclear boundary lines can lead to disputes with neighbours later on, and those situations can quickly become stressful, time-consuming and costly to resolve."
Even a small uncertainty around the boundary can cause bigger problems further down the line if it is not properly understood before purchase.
8. If the garden is too trend-led, it's no longer practical
With the rise of social media, the pressure to make a garden look more 'Instagrammable' has risen — but Luke insists this is a trap and practicality should always be front of mind.
"Gardens shouldn’t be designed for Instagram; they should be designed for everyday living," Luke explains.
"Think about entertaining, working from home, children’s play, relaxation and maintenance before committing to expensive design features. Considering many premium outdoor structures remain in place for 15-25 years, practical decisions often provide the greatest long-term value."
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