Loft Conversion Styles
There are many Loft Conversion styles to suit your home
There are many different styles of loft conversions and dormer windows, each offering different benefits depending on the layout of your home, the space you wish to create and any planning considerations. On this page, we’ve outlined the most common options and included practical guidance on where each type typically works best.
With the right design, a loft conversion can become anything from a spacious master bedroom with an en-suite to multiple additional rooms. Our role is to help translate ideas into well-considered designs that maximise space, natural light and how the new rooms connect with the existing home.
Popular Loft Conversion styles
Below are some of the most common loft conversion styles and how they are typically used.
Velux / Rooflight Loft Conversion
A Velux or rooflight conversion uses roof windows installed into the existing roof slope without altering the external roof structure. This is often the most straightforward and cost-effective option.
Best for:
Homes with sufficient existing head height and good roof volume.
Benefits:
- Minimal structural alteration
- Usually permitted development
- Lower cost and shorter build time
- Maintains original roof appearance
Considerations:
- Limited increase in usable floor space
- Layout flexibility can be restricted
Rear Dormer Loft Conversion
A rear dormer extends vertically from the rear roof slope, creating additional headroom and usable floor space.
Best for:
Creating larger bedrooms, en-suites or multi-room layouts.
Benefits:
- Maximises internal space and head height
- Excellent natural light opportunities
- Often permitted development (subject to limits)
Considerations:
- Changes the external appearance
- May require planning in some cases
Hip-to-Gable Loft Conversion
This style converts a sloping hip roof into a vertical gable wall, increasing internal volume. It is often combined with a rear dormer to maximise space.
Best for:
Semi-detached and detached properties with hipped roofs.
Benefits:
- Substantial increase in usable space
- Improved staircase positioning
- Unlocks difficult roof layouts
Considerations:
- Planning permission often required
- Higher build complexity and cost
Pitched Dormer Conversion
A pitched dormer features a small pitched roof structure that projects from the main roof slope, designed to reflect the style and proportions of the existing property. This approach prioritises visual balance and architectural character while still providing additional headroom and natural light.
Best for:
Homes where maintaining the original appearance of the property is important, including period and character properties.
Benefits:
- Blends naturally with traditional architecture
- Improves natural light and headroom
- Enhances external appearance when well-proportioned
- Often favoured by planners in sensitive areas
Considerations:
- Provides less usable floor space than box dormers
- More complex detailing can increase build cost
- Internal layouts may be more restricted
Mansard Loft Conversion
A mansard conversion alters the roof structure to create a near-vertical rear wall and flat roof, maximising usable internal volume.
Best for:
Urban properties where maximum space is required.
Benefits:
- Maximum floor area
- Full-height rooms
- Strong long-term value uplift
Considerations:
- Planning permission almost always required
- Higher construction cost
L-Shaped Dormer Loft Conversion
An L-shaped dormer combines two rear dormers to form a large continuous floor area.
Best for:
Victorian and Edwardian terraced properties with rear extensions.
Benefits:
- Excellent space gain
- Allows multiple rooms or large suites
- Efficient use of roof volume
Considerations:
- Planning permission often required
- Greater visual impact
Arched / Eyebrow Dormers & Catslide Roof Conversions
Arched or eyebrow dormers introduce curved rooflines that soften the appearance of the roof and integrate naturally with traditional roof forms. A catslide roof extends the roof slope further down the property, creating additional internal space while maintaining a flowing roof profile.
Best for:
Character properties, listed-style homes, conservation areas and designs where visual integration is a priority.
Benefits:
- Highly sympathetic to traditional architecture
- Creates distinctive external character
- Can enhance kerb appeal
- Often visually softer than box dormers
Considerations:
- Reduced head height compared to flat-roof dormers
- More complex construction
- Planning approval may be required
- Typically higher build costs
Understanding your Loft Conversion options
The design, position and size of a dormer really depends on two factors:
1. Roof Position
Whether the conversion sits to the front, side or rear of the property affects appearance, available space and planning requirements.
2. Space Requirements
Some homeowners prioritise maximum floor area and head height, while others prefer minimal external change and a simpler build.
Larger dormer styles generally provide the greatest increase in usable floor space and layout flexibility. Smaller dormers and rooflight conversions preserve the original roof shape but offer more limited internal gain. Each option carries its own design, planning and structural considerations.
Where a conversion faces the front elevation, visual impact and the surrounding street scene must be carefully considered. Many authorities restrict significant alterations to front-facing roofs unless permitted development rights apply. Rear-facing conversions typically allow greater flexibility, subject to volume limits and building regulations.
To learn more about the process involved in Loft Conversions, check out our Step-by-Step Guide.