2024 Guide: Loft Conversion Cost in the UK

Embarking on a loft conversion in the UK? It’s vital to understand the various factors that influence cost, including conversion type and features such as en-suites or balconies. Let’s delve into the elements that determine project pricing, helping you budget effectively.

Key Considerations for Loft Conversions

A typical fully finished loft occupies 35-50% of the home’s ground floor area so there is a lot of potential to increase usable living space by converting your existing roof space.

Estimating Costs for Varieties of Loft Conversions

Costs can vary according to specs offered:

  • Basic Spec: A simple finish.
  • Standard Spec: A moderate-quality finish.
  • Premium Spec: A high-quality finish with top-end materials.

London typically sees higher loft conversion costs due to regional pricing variations.

Standard Loft Conversion Costs

RegionTotal Build Cost (Low)Total Build Cost (Mid)Total Build Cost (High)Cost Per Sq Metre (Low)Cost Per Sq Metre (Mid)Cost Per Sq Metre (High)
East Anglia£46,500£50,800£55,100£1,560£1,705£1,850
London£55,000£61,500£68,500£1,850£2,070£2,300
Midlands£45,000£49,200£53,400£1,520£1,660£1,800
North England£45,200£49,300£53,500£1,510£1,650£1,780
Northern Ireland£44,000£46,700£50,600£1,430£1,560£1,690
Scotland£45,000£49,200£53,400£1,500£1,640£1,780
South East£50,500£56,500£63,000£1,850£2,070£2,280
South West£46,000£52,300£57,500£1,560£1,750£1,930
Wales£45,500£50,800£55,000£1,520£1,700£1,840
Average£47,000£52,000£56,800£1,580£1,740£1,910
ex VAT

Velux Loft Conversion – The most straightforward and affordable option, involving the installation of Velux windows within the existing roof space, without making changes to the roof structure.

Dormer Loft Conversion – Extends the roof outward, creating additional space and height; dormers can span the full width of the property or be smaller, depending on space needs.

Mansard Loft Conversion – Involves reshaping the roof to form a near-vertical wall and flat roof, offering the most space and ceiling height.

Hip-to-Gable Loft Conversion – Replaces the sloping side of the roof with a vertical gable end, increasing usable roof space and head height.

Gable-to-Gable Loft Conversion – Similar to a hip-to-gable conversion, but extends the gable end across the full width of the property.

Shell Loft Conversion – Provides the structural framework and space, leaving the internal finishes for the homeowner to complete.

Roof Lift Loft Conversion – Involves raising the entire roof to create more headroom and floor space, typically requiring significant structural changes.

Modular Loft Conversion – A prefabricated approach where loft sections are built off-site and then assembled on-site.

Standard Loft Conversion – Mostly involves internal alterations without major changes to the roof or structure, like roof lifts or complete rebuilds.


Frequently Asked Questions

What is the financial outlay for a typical loft conversion in the UK?
Expect to spend between £50,000 and £70,000, variable by region and specs.
Is it necessary to move out during a conversion?
Not usually, although disruptions are common.
How much headroom do I need for a conversion?
At least 2.2 metres from floor to ceiling at its highest point.
Can terraced or semi-detached homes accommodate a loft conversion?
Yes, with necessary consents, particularly for shared walls.
What are the key fire safety concerns?
Compliance with fire safety regulations is critical, including the installation of fire-resistant doors and smoke alarms.
How does a loft conversion impact house value?
Typically, it significantly enhances property value by creating additional liveable space.
Are there any unforeseen costs?
Potential exists, especially without thorough planning and unexpected structural needs.
What permits might I need?
Planning permissions, particularly for major exterior changes, and a party wall agreement if applicable.
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