Property Features That Can Devalue Homes by Up to 20%

9 May 2025

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If you’re planning to sell your property or just curious about its value, getting a professional estate agent’s valuation is key. While many homeowners highlight what they love about their homes, some overlooked features may be turn-offs for potential buyers and could devalue your property by up to 20%.

Property expert Danny Johnson from Danny Buys Houses shares insights from his extensive experience buying and selling homes.

1. Outdated Windows

No one wants a home that’s draughty or fails to retain heat.

  • Single-pane or old windows suggest poor energy efficiency
  • Most buyers expect modern, double-glazed windows
  • Replacing them is a costly upgrade, so it lowers the home’s value

2. Unattractive Brickwork

Older homes from the 60s and 70s often have dated or unattractive brick colours.

  • This can put off buyers instantly
  • Danny says it could devalue a home by up to 10%

3. Poorly Executed Additions

Bad DIY jobs are one of the biggest red flags for buyers.

  • Low-quality extensions or visible construction flaws
  • Unauthorised modifications without planning approval
  • These can lower your home’s value by up to 20%

4. Outdated Carpets

Today’s buyers prefer hardwood or laminate flooring over old carpets.

  • Worn, stained, or dated carpets feel unhygienic
  • According to Danny: “Outdated carpet can reduce the home’s value by at least 5%, depending on coverage.”

5. Bedroom Accessibility Issues

Homes where a bedroom is only accessible through another bedroom can be functionally problematic.

  • This layout flaw affects privacy and flexibility
  • Danny notes it can be seen as having one fewer bedroom

Final Thought

If you’re aiming to increase your home’s market value, it’s worth investing in professional renovations and rethinking any layout issues or outdated finishes. First impressions count, and buyers are quick to notice flaws.

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