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Loft Conversion

Through a unique combination of engineering, construction and design disciplines and expertise.

Loft Conversion

Through a unique combination of engineering, construction and design disciplines and expertise.

Welcome to Studio20 Architects

At Studio20 Architects, we specialise in loft conversions in London, UK, transforming underused lofts into bright, functional living spaces. A loft conversion London project can be complex, but we make the entire process stress-free and straightforward. From the initial site survey and concept design to planning permission, construction oversight, and final detailing, our team guides you at every stage. As a trusted choice for anyone searching for a loft conversion near me, we’re committed to delivering beautiful results that elevate your home.

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Loft Conversion

Loft Conversions

Loft conversions are one of the most effective ways to extend your home and increase its value. Whether you want a home office, an extra bedroom, or a cosy hobby room, a loft conversion London solution can unlock the hidden potential of your property. As specialists in loft conversions in London, UK, we’ve delivered numerous successful projects tailored to unique needs and spaces. From small loft conversion designs to complex dormer loft conversion builds, we help you choose the right option for your home. If you’re searching for a loft conversion near me, our team provides expert guidance on layouts, loft conversion stairs, planning, and design, bringing your vision to life with precision and care.

Loft Conversion Architects, Designers & Planning Consultants

Transforming unused lofts into bright, functional spaces is one of our key specialities at Studio20 Architects. With extensive experience across London homes, we provide a complete loft conversion London service that suits Victorian terraces, semis, and modern properties. Our architects, designers, and planning consultants guide you through every stage, from measured surveys and concept design to securing loft conversion planning permission and preparing Building Regulation drawings. Whether you’re searching for a loft conversion near me, we ensure your project is compliant, beautifully designed, and maximises your home’s potential.

Loft Conversion

Loft Conversion Planning Permissions

At Studio20 Architects, we make the loft conversion planning permission process simple, clear, and stress-free. Our experts specialise in loft conversions in London, UK, with deep knowledge of borough requirements across Richmond, Kingston, Wandsworth, and nearby areas. Whether you’re exploring a loft conversion London upgrade or searching for a loft conversion near me, we create approval-focused design strategies that maximise success even in conservation areas. From assessing feasibility to handling council negotiations, we manage every step. Contact our specialists today to secure planning permission for a loft conversion with confidence.

Why Choose Our Architects In London?

Thinking about a loft conversion? Book a free consultation with our team and explore how we can turn your unused loft into a beautiful, functional living space.

Transform your unused attic into a stunning new living space with a bespoke loft conversion that London homeowners choose for architectural excellence and contemporary elegance. Studio 20 Architects delivers premium, concept-driven loft designs with meticulous attention to detail, ensuring a refined transformation that elevates both lifestyle and property value.

Sustainability & Efficiency

Whether you need a small loft conversion or a dormer loft conversion, we focus on eco-friendly materials, high-performance insulation, and energy-efficient design. Homeowners searching for a loft conversion near me rely on us to create sustainable spaces that reduce energy costs while enhancing long-term comfort and environmental performance.

Cost & Budget

We provide clear, transparent pricing for every stage, from loft conversion stairs design to complete structural upgrades. Our team ensures your loft conversion London budget stays controlled through innovative planning, value-led solutions and expert guidance on loft conversion planning permission, helping you avoid delays, hidden costs, or costly redesigns.

Loft Conversion Process

Our streamlined workflow manages everything from initial concept to completion, including obtaining planning permission for the loft conversion smoothly and efficiently. Whether it’s a small loft conversion or a complete dormer loft conversion, we deliver precise architectural detailing, stress-free council approvals, and a seamless build experience for all loft conversions in London, UK clients.

Get A Free Quote For Your Loft Conversion Project

Whether you already have a vision in mind or need guidance exploring your design possibilities, our team is here to help. We’ll schedule an initial consultation at your convenience, where our experts will review your ideas, offer custom advice, and guide you on loft conversion planning permission. You’ll also receive a detailed, no-obligation quote for your loft conversion in London.

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Here’s what our clients have to say.

Types of Loft Extensions

Loft Conversion

Dormer Loft Conversion​

A Dormer Loft Conversion is one of the most refined and functional ways to expand your home, offering a substantial increase in usable headroom and natural light. By extending the roof to form a vertical face, the dormer creates a spacious, full-height environment that feels like a natural continuation of the existing property. This intelligent configuration is particularly ideal for homeowners seeking a loft conversion London solution crafted by seasoned loft conversion specialists who deliver practicality and architectural elegance without compromising the roofline.

Why Choose a Dormer Loft Conversion?

Explore our Wood Green Loft Conversion for a beautifully detailed dormer design:  https://studio20architects.co.uk/wood-green-loft/

Loft Conversion

Mansard Loft Conversion

A Mansard Loft Conversion offers one of the most transformative ways to unlock a whole additional floor within your property. Defined by its near-vertical rear roof slope and elegant proportions, the mansard creates expansive interior height and generous usable space. This style is especially popular in loft conversions in London, UK, where homeowners value architectural refinement paired with significant spatial enhancement delivered by an experienced loft conversion architect.

Why Choose a Mansard Loft Conversion?

See how our Merton Loft Conversion showcases spatial transformation using a mansard-inspired design:
https://studio20architects.co.uk/merton-loft-extension/

Loft Conversion

Hip-to-Gable Loft Conversion

A Hip-to-Gable Loft Conversion is a highly effective way to expand homes with sloping hip roofs, especially semi-detached and detached properties. By replacing the angled hip with a vertical gable wall, this conversion unlocks substantial internal space and becomes even more valuable when combined with tailored loft conversion services that ensure structural efficiency and aesthetic harmony. It is ideal for anyone searching for a loft conversion near me that delivers efficient expansion without altering the home’s core character.

Why Choose a Hip-to-Gable Loft Conversion?

See spatial optimisation in our Wood Green Loft Conversion, suitable for hip-to-gable opportunities:
https://studio20architects.co.uk/portfolio/wood-green-loft-conversion-london-planning-residential-architecture/

Loft Conversion

L-shaped Loft Conversion​

An L-Shaped Loft Conversion is one of the most generous and architecturally distinctive options available, combining two dormers at right angles to create exceptional volume. This style is particularly recommended for homeowners seeking loft conversion London solutions delivered by a premium loft conversion company that understands how to maximise period-home potential while respecting heritage character.

Why Choose an L-Shaped Loft Conversion?

Explore multi-zone possibilities in our Dartford Longfield & New Barn Loft Conversion:
https://studio20architects.co.uk/dartford-longfield-and-new-barn-loft-conversion/

Loft Conversion

Roof-Light (Velux) Loft Conversion

A Roof-Light Loft Conversion is the most cost-efficient and least disruptive way to convert your loft, ideal for homes with sufficient existing headroom. Without altering the roof structure, this design introduces new life into the attic through strategically placed roof windows. It is particularly suitable for clients navigating planning permission for a loft conversion while seeking a refined loft conversion design that preserves the roofline’s integrity.

Why Choose a Roof-Light Loft Conversion?

See light-enhancing solutions in our Wandsworth Loft project:
https://studio20architects.co.uk/wandsworth-putney-heath-loft-conversion/

Loft Conversion

Piggy-Back Loft Conversion

A Piggy-Back Loft Conversion is an innovative solution designed for homes with an existing rear outrigger, creating a new raised loft level above it. This unique style offers significant structural and spatial advantages, particularly for homeowners requiring thoughtful loft conversion planning while maximising volume in urban properties. The elevated design dramatically increases vertical clearance and overall footprint, making it an excellent choice for London homeowners seeking advanced space optimisation.

Why Choose a Piggy-Back Loft Conversion?

See elevation-led spatial design in our Kingston Loft Conversion:
https://studio20architects.co.uk/kingston-loft-conversion/

Frequently Asked Questions About Loft Conversions​

Most simple loft conversions can be completed under permitted development rights, meaning formal planning permission is often not required. However, you must still adhere to specific limits and conditions, especially in conservation areas or if altering the roofline significantly.

Yes, a well-executed loft conversion adds value to your property by providing extra usable space, often increasing the property's value by 15% to 20%. The final return depends on the quality of the finish and the resulting increase in bedrooms/bathrooms.

On average, the process to complete a loft conversion typically takes between 6 to 12 weeks, depending on the complexity (e.g., whether it’s a simple Velux conversion or a complex hip-to-gable or Dormer).

Absolutely. Unlike planning permission, building regulations for a loft conversion are mandatory for every project. These regulations cover critical aspects like fire safety, structural integrity, insulation, and the safe escape route in case of a fire.

Yes, many straightforward projects, like rear Dormer loft conversions, fall under permitted development. This allows you to bypass the full planning application process, provided you follow size restrictions and do not significantly alter the front elevation.

Unfortunately, not every home is suitable. The primary limiting factors for a loft conversion are the existing head height, the roof pitch, and the structure of the existing trusses or framework.

Popular Questions, you may be interested in

Not always. Many straightforward loft conversions and smaller home extensions can fall under Permitted Development, provided the design stays within the allowed size and roof alteration limits. However, if your home is in a Conservation Area, subject to an Article 4 direction, part of a terraced street with stricter controls, or if the proposal significantly alters the roofline, then a full planning application will be required.
Studio20 reviews your property in detail and advises the correct route before any drawings are produced.

Yes. All structural building works  including loft conversions, extensions, and internal structural changes  legally require Building Regulations approval. This ensures compliance with essential standards covering structural stability, fire safety, insulation, ventilation, and staircase requirements.
Studio20 prepares all Building Regulation drawings and coordinates approvals and inspections on your behalf.

Not legally, but it is strongly recommended. An architect or experienced architectural designer ensures your home gains maximum space and long-term value while remaining fully compliant with planning and Building Regulations. Studio20 develops tailored designs, manages applications, handles technical drawings, and reduces costly on-site issues through proper pre-construction planning.

The process begins with a measured survey and detailed architectural drawings. These, along with supporting site plans and application forms, are submitted electronically to your Local Planning Authority.
Studio20 manages the entire process of preparation, submission, communication with the council, responding to queries, and negotiating until a decision is issued.

You can request a quote via phone, email, or by completing the form on our website. Studio20 currently offers a free site survey (worth £350) as part of our campaign for loft conversions and extensions. After a brief consultation and property review, we provide a detailed, no-obligation quote along with a customised proposal.

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