Loft Conversion London | Add Value & Space
Looking to add more space and value to your London home without the hassle of moving? A loft conversion is the perfect solution! At AstraStone Construction, we are experts in loft conversions, providing high-quality, affordable services to transform your unused attic space into a functional, stylish room.
Whether you need an extra bedroom, a home office, or a luxurious living area, our team of skilled builders and structural engineers will deliver a loft conversion tailored to your needs.

Why Choose a Loft Conversion?
A well-designed loft conversion can significantly increase the value of your home. On average, a loft conversion adds up to 20% to the market value of a property. In a competitive London housing market, this can be a substantial return on investment, making it an ideal solution for growing families or homeowners looking to make the most of their space.
How Much Does a Loft Conversion Cost?
The cost of a loft conversion in London depends on several factors, including the type of conversion, the size of your loft, and the complexity of the project.
Here’s a general guide to loft conversion costs:
Velux Loft Conversion: Starting from £25,000
Dormer Loft Conversion: Starting from £35,000
Hip to Gable Loft Conversion: Starting from £40,000
Mansard Loft Conversion: Starting from £50,000
These prices include design, planning permissions, and construction.
We offer a free, no-obligation quote to give you a clear idea of your project’s total cost based on your unique requirements.
Types of Loft Conversions
At AstraStone Construction Ltd, we offer a variety of loft conversion types to suit your property’s structure and your personal needs:
1. Velux Loft Conversion
This is the simplest and most cost-effective type of loft conversion, where Velux windows are installed within the roof’s existing structure. It requires minimal construction and is perfect if you’re looking to create an additional room without altering the roofline. Ideal for homes with plenty of roof height.
2. Dormer Loft Conversion
A Dormer conversion adds a box-like structure to your existing roof, increasing both floor space and headroom. This type is very popular in London as it maximizes the usable space in smaller homes. Dormer loft conversions are versatile and can be adapted for different layouts.
3. Hip to Gable Loft Conversion
If your home has a sloped roof, a hip to gable conversion can provide more space by straightening the sloping side of your roof. This type of conversion is common in semi-detached and end-of-terrace homes in London, offering substantial additional space.
4. Mansard Loft Conversion
The Mansard loft conversion involves significant changes to your roof’s structure, creating a flat roof and almost vertical walls. It offers the most internal space of any loft conversion type, making it a great option if you want to add multiple rooms. Due to its extensive nature, it often requires planning permission.
Why Choose AstraStone Construction Ltd, for Your Loft Conversion?
At AstraStone Construction Ltd, we provide a full-service loft conversion experience, from planning and design to construction and finishing touches.
Our team of qualified structural engineers, experienced builders, and contractors ensure that every project is completed to the highest standard.
We take care of all aspects of the build, including obtaining necessary permits and approvals from London authorities.
- Experienced team of builders and structural engineers
- Tailored designs to match your lifestyle and budget
- Transparent pricing with no hidden costs
- Dedicated project management from start to finish
Get a Free Quote Today
Ready to transform your loft into a beautiful living space? Contact AstraStone Construction Ltd today for a free consultation and quote.
We’ll work closely with you to understand your vision and deliver a loft conversion that enhances both your home and its value.