Dormer Loft Conversions
Full-height, light-filled rooms built into your roof space, the most popular loft conversion type for maximum space and headroom across Stockport and Cheshire.
Unlock Your Loft's Full Potential
A dormer loft conversion is the most popular type in the UK, and for good reason. By extending outward from the existing roof slope, a dormer creates full standing headroom and significantly more usable floor space than a Velux or hip-to-gable conversion.
Types of Dormer Conversion
We build all types of dormer loft conversions, each suited to different property types and budgets.
Flat Roof Dormer
The most common and cost-effective dormer type. A flat-roofed box extends from the rear slope, creating maximum internal floor space and headroom. Suitable for almost all property types.
L-Shaped Dormer
An L-shaped dormer wraps around two sides of the roof, creating an even larger space, typically used for a master bedroom with en-suite, or two separate rooms with a landing area.
Pitched Roof Dormer
A dormer with a traditional pitched (tiled) roof that matches the existing roof style. More visually appealing from the outside and often preferred in conservation areas or for front-facing dormers.
What's Included in Every Dormer Conversion
We provide a complete, turnkey dormer loft conversion service. Everything from initial survey to final snagging is included in our fixed-price quotation.
What a Dormer Adds to Your Home
A dormer conversion doesn't just add a room, it transforms your entire home's functionality and value.
Extra Bedroom
A full-size double bedroom with proper headroom, fitted wardrobes, and natural light, the most common use for a dormer conversion.
Master Suite
A large master bedroom with a luxury en-suite bathroom or shower room, creating a private retreat on the top floor.
Home Office
A quiet, dedicated workspace away from the main living areas, increasingly popular for remote workers.
Playroom / Den
A children's playroom, teen den, or gaming room that keeps the ground floor peaceful and organised.
Building Regulations & Staircase Design
Every dormer loft conversion must comply with Building Regulations. Here are the key requirements we handle for you.
Fire Safety
A third-storey loft requires a protected escape route with fire doors, smoke detectors, and (in some cases) a fire-rated staircase enclosure from loft to ground floor.
Staircase Access
A permanent, Building Regulation-compliant staircase must be installed. We design staircases that minimise impact on the floor below, often above the existing stairwell.
Insulation & Ventilation
Loft rooms require higher insulation standards than standard rooms. We insulate walls, roof, and floor to exceed current Building Regulation U-values with proper ventilation.
Head Height
A minimum of 2.2m head height is required in the centre of the room at the ridge. We assess this during our free site survey to confirm feasibility.
Dormer Loft Conversion FAQs
Answers to the most common questions about dormer conversions.
How much does a dormer loft conversion cost?
A dormer loft conversion typically costs between 35,000 and 65,000 depending on size, specification, and whether an en-suite is included. An L-shaped dormer will be at the higher end. We provide a fixed-price quotation after our free survey.
Do I need planning permission for a dormer?
Most rear dormers fall within permitted development and don't require planning permission. Front-facing dormers, dormers in conservation areas, and dormers that exceed volume limits will need planning approval. We check your eligibility during our free survey.
How long does a dormer conversion take?
A typical dormer loft conversion takes 8 to 12 weeks from scaffolding going up to completion. Most of the work is done from outside via scaffolding, so disruption inside the home is minimal until the final fit-out stages.
Is my house suitable for a dormer conversion?
Most houses with a ridge height of at least 2.2m in the loft are suitable. We assess head height, roof structure (cut timber vs. trussed), access for a staircase, and any planning restrictions during our free site survey.
Can I add an en-suite bathroom to a dormer conversion?
Absolutely, it's one of the most requested features. We design compact but fully functional en-suites with shower, WC, and basin. Plumbing is typically run through the floor and connected to the existing soil stack.