The DIY jobs you really shouldn’t do before selling your home

It’s natural to want to make your home look as good as possible when putting it on the market, but if you do the wrong kind of DIY, you could be shooting yourself in the foot.

We recently partnered with property experts from across the UK to reveal the DIY jobs that can actually reduce the value of your home.

Converting a bedroom is one of the biggest no-nos when selling, as it could reduce your market value by 20% (up to £46,000 on an average home)

Read below for a comprehensive list of DIY jobs that you really shouldn’t do before listing your home, as they could end up knocking thousands of pounds off your house price.

1) Going open plan - £70,000 off (up to 30% of the property value)

While open plan rooms can make your home feel more spacious, if you make a mistake during the conversion, you could completely ruin the property.

Holly Herbert, Head of Content at, says: “If you’re considering an open-plan layout, you need to make sure you do the proper research and have several professionals assess the plans and the property before you take any action. You could cause irreparable structural damage and leave your house unliveable.

Alex Willocks, owner of Burbeck Interiors, believes that such damage could be disastrous to your property value, with reductions of up to 30%. With the average UK home costing £232,000, this means that it could cost you nearly £70,000.

2) Meddling with key appliances - £12,000 off (up to 5% of the property value)

Some jobs simply must be left to the professionals, particularly when they involve your gas or electric systems.

Alex says: “When it comes to key appliances, don’t do it yourself, especially if you are selling. Any mistakes will cause delays and can be expensive to fix, and permanent damage will drastically reduce the value of your property. Bring in the professionals - it will save you money in the long run.”

If amateur DIY efforts mean your house has to be rewired, Holly estimates this could reduce its value by around 5%.

3) Installing poor quality windows or doors - £12,000 off (up to 5% of the property value)

Windows and doors are key contributors to that all-important kerb appeal, so low-quality products can really affect saleability.

Holly says: “Adding poor windows will absolutely lower your house value, as they usually look off-putting and will mean spending more money in the future - whether by trying to keep the house warm if they aren’t insulated, or having to replace them to make them more efficient. With the cost to replace these, you could see a 5% drop in market value.”

4) Adding a poor quality conservatory or sunroom - £12,000 off (up to 5% of the property value)

Conservatories or sunrooms can definitely make your home more appealing, but if they are built poorly or are badly placed, then your property value can suffer.

Holly says: “Conservatories are one of the most expensive house upgrades, with one of the lowest pay-offs. They can even decrease your house value if they are not fitted to a high standard. If there any issues with leaking, clouded or cracked glass, or if there is little privacy in your garden, you could see a 5% decrease in market value.”

5) Adding quirky tiling - £10,000 off (up to 4% of the property value)

Tiling only suits certain homes and it can quickly look old-fashioned, which is extremely off-putting to some buyers.

Paul Keighley, the Residential Partner at Bramleys Estate Agents, says: “Keep any tiling neutral and to a minimum, as it is expensive to alter when upgrading. If a potential buyer visits a property to find tiles in multiple rooms that they hate, they will think of how much it will cost to remove and they might be unlikely to make an offer.”

Alex estimates that tiles could reduce your asking price by around £10,000.

Do you have any tips for people trying to sell their home? Let us know @scssofas