Garage vs. Loft Conversion: Which Adds More Value in the UK?

When UK property owners want to create more room and add value to their homes, two popular considerations are garage and loft conversions. But in terms of investment and ROI, many are left questioning — garage conversion or loft conversion UK: Which adds more value? The answer cannot be summed up in one word. 

There are a number of factors to consider. It includes your home layout, where you live, planning permissions, etc. In this post, we’re going to compare the two options so you can determine which is the right conversion for you.

What Is a Garage Conversion?

A garage conversion is converting a garage into usable living space. Garages can be attached to your house or separate from your house. It is usually less necessary for structural changes than for loft conversions.

Typical uses include:

• Home office
• Playroom
• Guest bedroom
• Small studio flat

What Is a Loft Conversion?

Loft conversion allows you to convert the available dead space under your roof into a living or usable space. These conversions are usually a bit more technical, particularly when dormers or structural work are required.

Common uses include:

• Master bedroom with en-suite
• Home office
• Studio or hobby room
• Cost Comparison

Garage Conversion: Often the more affordable option, ranging from £10,000–£20,000 depending on finishes and workmanship.

Loft Conversion: This is more expensive, with standard dormers or mansard styles generally coming in at between £25,000–£50,000.

Converting lofts is more expensive. But it can also generate a higher return on investment. You can make it easier by hiring professionals.

Planning Permission & Building Regulations

• Garage Conversions: Often fall under permitted development rights, making the process smoother. You’ll still need to follow building regulations.
• Loft Conversions: Also, you may not need full planning permission if the size increase meets certain limits. But structural work often involves more scrutiny.

Always consult local authorities or a professional like JGB Services Ltd to confirm planning requirements.

• Garage: Converting your garage means sacrificing off-street parking or storage. You can face the downside of the decisions. Especially in urban areas where there is a shortage of parking.
• Loft: Utilises previously unused space without compromising outdoor or utility space, making it more attractive in most scenarios.

Garage Conversion Value UK

On average, a garage conversion adds around 10-15% to your home’s value in the UK. It’s a cost-effective option when you’re working with a limited budget or when your garage is underused.

Loft Conversion ROI UK

A loft conversion can add up to 20-25% to your property’s market value, especially if it includes a bedroom and bathroom. In areas with high property prices like London or the South East, this can equate to a six-figure boost.

Which Adds More Value: Loft or Garage Conversion?

Here’s a quick comparison table to help you understand. Have a look 

So, if your goal is maximum ROI, the answer to “which adds more value: loft or garage conversion?” is clear — a loft conversion usually offers greater value. This is particularly true in homes where an additional bedroom would significantly increase the asking price.

• If your garage is rarely used for parking.
• When your budget is limited, but you need extra living space.
• If you want a faster, less disruptive build.

When to Choose a Loft Conversion

• When your home lacks enough bedrooms.
• If you don’t want to lose storage or parking.
• When you want to significantly boost the property’s value long-term.

Final Thoughts

Both conversions offer value, but the best choice depends on your home’s layout, your needs, and your investment goals. While garage conversion value UK is notable, the loft conversion ROI UK often edges it out in terms of return and desirability.

Looking to start your project? JGB Services Ltd provides expert garage and loft conversions tailored to your space, budget, and vision. Let’s bring your dream space to life — and boost your home’s value in the process.