London Loft Conversions
Bespoke Loft Conversions in London
At Alpha Migss, we specialise in transforming underutilised lofts into vibrant living spaces across London. Our team of experienced designers and builders collaborates closely with homeowners to create bespoke loft conversions that enhance both functionality and property value. Whether you’re envisioning an extra bedroom, a home office, or a personal retreat, we tailor our services to meet your unique needs. With years of experience in attic conversions throughout London, our loft renovation specialists deliver custom loft designs that perfectly balance aesthetics and practicality.

Why Choose Us?
Pushing the limits of design
Customised Designs: Tailored to your lifestyle and preferences, ensuring your loft conversion reflects your personal style and meets your specific requirements.
Premium Quality Materials: Using only the finest materials to ensure durability, style, and longevity in every project we undertake.
Experienced Construction Team: Our skilled professionals are dedicated to excellence, bringing expertise and craftsmanship to every aspect of your loft conversion.
Comprehensive Project Management: Seamless coordination from concept to completion, keeping you informed and involved throughout the process.
Sustainable Practices: Incorporating eco-friendly materials and energy-efficient solutions to reduce environmental impact and improve your home’s energy performance.
What we do
Homes Designed Around you

Kitchens

Bathrooms

Living
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LOFT CONVERSIONS
Our Loft Conversion Services
Dormer Loft Conversions
Expand headroom and floor space with our expertly crafted dormer extensions. These popular conversions extend vertically from the slope of your existing roof, creating additional floor space and headroom. Suitable for various property styles across London, dormer conversions offer excellent value for money and versatility in design.
Mansard Loft Conversions
Achieve maximum space with a flat roof and steeply sloping sides. Mansard conversions typically run along the entire length of your property’s roof, substantially increasing interior space. Ideal for urban properties in London, these conversions offer a distinctive aesthetic and exceptional space utilisation.
Hip-to-Gable Loft Conversions
Extend the hip roof to a vertical gable, significantly increasing interior space. This conversion type is common in semi-detached and detached homes, particularly those with a hipped roof. By straightening the sloped side of the roof, we create valuable additional floor space perfect for bedrooms or living areas.
Velux (Roof Light) Loft Conversions
Install roof windows without altering the roof structure for a cost-effective and less invasive solution. Velux conversions maintain the original shape of your roof while flooding your new space with natural light. This option is particularly suitable for properties where external alterations are restricted or for homeowners seeking a more budget-friendly solution.
L-Shaped Loft Conversions
Combine two dormer builds for extensive space, perfect for creating multiple rooms. Typically used in properties with an existing extension, L-shaped conversions maximise available space and offer exceptional versatility. Create a master bedroom with en-suite, multiple children’s bedrooms, or a combination of living and sleeping areas.


FAQ
Frequently Asked Questions
Do I need planning permission for a loft conversion in London?
Many loft conversions in London fall under permitted development rights, meaning planning permission isn’t required. However, if your property is in a conservation area, listed, or you’re planning significant alterations that extend beyond permitted development parameters, planning permission will be necessary. Our team will assess your specific circumstances during the initial consultation and guide you through any required applications.
How much does a loft conversion cost in London?
Loft conversion costs in London typically range from £30,000 to £60,000, depending on the conversion type, size, and specifications. Velux conversions are generally the most affordable, while mansard and L-shaped conversions represent the higher end of the price spectrum. Factors influencing the budget include structural work, finishing quality, bathroom installations, and additional features like balconies or premium glazing.
How long does the loft conversion process take?
The timeline varies depending on the project scope, but typically:
- Planning and design: 4-6 weeks
- Building regulations approval: 2-3 weeks
- Construction: 8-12 weeks
From initial consultation to completion, most projects take approximately 3-5 months. We’ll provide a detailed timeline specific to your project during the planning phase.
Can my loft be converted?
Most lofts can be converted, but certain factors determine suitability. The main considerations include:
- Minimum head height of 2.2m (ideally 2.4m+)
- Sufficient space for a compliant staircase
- Roof structure (trussed roofs require more modification)
- Property type and local planning regulations
We’ll assess these factors during our site survey and advise on the feasibility of your conversion.
What disruptions should I expect during construction?
While we strive to minimise inconvenience, loft conversions do involve some disruption. The most intensive work typically occurs during the first few weeks when we create the new floor structure and open the roof. During this phase, you might experience noise, dust, and increased activity in your home. We implement dust barriers, protective floor coverings, and work within agreed hours to minimise impact. Many clients continue living in their homes throughout the project, though having alternative accommodation during the most disruptive phases is sometimes preferable.
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Pushing the limits of design


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THE PROCESS
Our Process – How We Work
Step 1: Initial Consultation & Site Survey
Understanding your requirements and assessing your property is our first priority. Our experienced consultants will visit your home, discuss your vision, and evaluate the feasibility of your loft conversion. We’ll provide initial advice on the most suitable conversion type for your property and outline potential design options.
Step 2: Design & Planning
After the initial consultation, our design team develops architectural plans tailored to your preferences and property. We’ll handle all necessary planning applications and building regulations approvals, ensuring your project complies with local requirements and permitted development rights.
Step 3: Construction & Project Management
Once plans are approved, our construction team executes the build with precision and care. Our project managers provide regular updates and conduct quality checks throughout, ensuring your loft conversion progresses smoothly and meets our exacting standards.
Step 4: Completion & Handover
Before project completion, we conduct rigorous final inspections to ensure every aspect meets our quality benchmarks. We’ll walk you through your new space, explaining features and answering any questions. Only when you’re completely satisfied will we consider the project complete.
