How much does a loft conversion add in value to a property?

A loft conversion can significantly increase the value of a property, with average figures in the UK generally ranging from 10% to 25%. However, the exact amount of value added depends on several factors:

Location:

Properties in areas where space is at a premium (like London) tend to see a higher return on investment. For example, a loft conversion in Central London could add almost £200,000, while in the North East, it might be around £38,000 for a similar space.
Type of Conversion: Different types of loft conversions offer varying amounts of added space and value.

Velux/Rooflight conversion:

Typically adds up to 10% value.

Dormer conversion:

Can boost value by up to 20%.

Hip-to-gable conversion:

Adds up to 15-20% to property value.

Mansard conversion:

In high-value areas, can raise property value by 20-25%.

Quality of the conversion:

High-quality materials, finishes, and a well-designed layout that complements the existing home will maximize the added value.

Added functionality:

A loft conversion that includes an additional double bedroom and an en-suite bathroom is often cited as providing the highest value increase, potentially adding around 20-25%.

Headroom and Usable Space:

A loft conversion with good head height and usable space will be more appealing and add more value than an awkward or restricted space.

Local Market Trends:

It’s important to consider the “price ceiling” for properties in your area. If your converted property would exceed the maximum price for similar homes in the neighbourhood, the added value might be limited.
In many cases, a loft conversion can provide a good return on investment, making it a financially sound home improvement, especially when compared to the costs of moving house.

See also: Types of loft conversion