Transform your loft into valuable living space
Whether you need an extra bedroom, home office, or a peaceful retreat, a loft conversion is one of the smartest ways to add space and value to your home.
What is a loft conversion?
A loft conversion transforms your unused attic space into a functional room. It's one of the most popular home improvements in the UK, adding valuable floor space without extending your property's footprint. From cosy bedrooms with en-suites to bright home offices with stunning views, loft conversions offer endless possibilities. They typically add 10-20% to your property value, often paying for themselves when you sell.
Types of loft conversions
The right type depends on your property, budget, and how much space you need.
Dormer Loft Conversion
The most popular option. A box-like structure extends from the roof slope, creating maximum headroom and floor space.
Mansard Loft Conversion
A near-vertical rear wall with a flat roof, maximising space. Popular in terraced houses and conservation areas.
Hip to Gable Conversion
Extends the sloping hip roof to create a vertical gable wall, perfect for semi-detached and detached homes.
Velux / Rooflight Conversion
The most affordable option. Adds roof windows without changing the roof structure, ideal if you have good head height.
How much does a loft conversion cost?
Costs vary based on the type of conversion and your location. Expect to pay £1,200-£2,000 per m² for construction, with London prices 20-30% higher.
Velux / Rooflight
Dormer Conversion
Hip to Gable
Mansard Conversion
Planning & building regulations
Many loft conversions fall under Permitted Development rights. However, building regulations approval is always required, covering:
Minimum head height
At least 2m over half the floor area
Structural floor strength
Existing joists often need reinforcing
Fire safety & escape routes
Protected stairway and fire doors required
Staircase design
Must meet safety regulations
We handle all technical drawings and building regulations applications, with 98% building regulations and planning approval achieved.
Book a free consultationWhy choose Hosannahs for your loft conversion?
From first survey to final sign-off, we're with you every step.
Expert Design
Maximise space and light with clever architectural design
Approval Success
98% building regulations and planning approval achieved
Full Drawings
All technical drawings for building control
Builder Network
Trusted contractors for competitive quotes
Loft conversion FAQs
Everything you need to know about converting your loft.
Loft conversion costs typically range from £30,000 to £90,000 depending on the type and specification. Velux conversions start around £30,000, dormer conversions from £45,000-£65,000, and mansard conversions from £60,000-£90,000. London prices are typically 20-30% higher.
Construction typically takes 6-12 weeks depending on the type and complexity. The design and drawings phase usually takes 2-4 weeks, and building regulations approval a further 4-6 weeks.
Many loft conversions fall under Permitted Development rights, meaning no planning permission is required. However, building regulations approval is always required. We'll confirm which applies to your project during your free consultation.
A well-designed loft conversion typically adds 10-20% to your property value, often paying for itself when you sell. An extra bedroom with en-suite can add even more in high-value areas.
You need at least 2.2m of head height over half the floor area for a comfortable conversion. We'll measure this during your free survey and advise on the best conversion type for your space.
Most lofts can be converted, but the type depends on head height, roof structure, and available space. We'll assess your loft during a free survey and recommend the most suitable and cost-effective option.
Ready to convert your loft?
Book a free consultation and get expert advice on your project.