Loft Conversions in South London & Kent
Transform Your Living Space With A Bespoke Loft Conversion
Turn your loft space into an additional living space with our custom loft conversions. Whether you want to add an extra bedroom, playroom, or transform your unused attic into an entire floor, our in-house architects and conversion specialists deliver affordable solutions.
Loft Conversion Types
The right loft conversion for your property depends on its roof structure, size, and your personal preferences. We offer a variety of conversion types for detached, semi-detached, terraced, and bungalow homes.
We’ll arrange a free consultation to assess your home and determine which conversion best meets your property’s structure, needs, and budget.
Hip to Gable Loft Conversions
When a property has a hipped roof, converting one hipped side to a gable can unlock usable floor area and stair placement. Common on semi-detached and detached homes with adequate ridge height. Often achievable under Permitted Development (subject to limits/conditions).
Good to Know: A hip-to-gable conversion enhances headroom in a large bedroom with an en-suite layout. However, internal steelwork is often required.
Dual Hip to Gable Loft Conversions
Some homes have hips on both sides. Where structure and planning allow, converting both to gables can create a near full-width space. Your survey will confirm viability and any party wall/planning considerations.
Good to Know: These conversions can maximise the footprint of a suitable semis/detached property. The engineering and envelope works are more extensive than a single hip-to-gable.
Rear Dormer Loft Conversions
On many pitched roofs, a rear dormer is the most practical way to form a full-height room. We replace a section of the rear slope with a vertical dormer face to increase headroom and usable floor area. Set-back requirements vary by local planning guidance.
Good to Know: Ideal for standard terrace/semi layouts and easy to pair with a straight-run stair. Often PD compliant within volume limits.
L-Shaped Lofts
Properties with L-shaped rear additions (common in Victorian/Edwardian homes) typically require an L-shaped dormer to follow the footprint and unlock continuous head height across both sections.
Good to Know: L-Shape conversions are effective on period terraces with a back outrigger. They offer layout flexibility for 2 rooms + a shower room where space permits.
Velux (Rooflight) Loft Conversion
Where the existing roof volume is already adequate and the structure/planning context suits, a rooflight-only conversion can be appropriate. We retain the roofline and introduce Velux/roof windows for natural light and ventilation.
Good to Know: Velux conversions require the least external alteration and often provide the quickest route, provided there is sufficient head height. However, they’re not a fit for every roof.
Mansard Loft Conversion
When space is your main priority, a mansard loft conversion is the go-to option. They take existing roof slope designs and turn them into large rooms that span the length of your house.
These conversions are ideal if you want to add an extra level to your home, but they require more construction work, typically require planning permission, and command a larger investment.
Good to Know: Mansard conversions maximise internal volume where permitted. They also come with a higher build scope and planning sensitivity.
Bungalow Conversions
Bungalows often have generous roof volume. Suitability depends on load-bearing walls, ridge height and stair strategy. Our team confirms where strengthening or redesign is needed to create a comfortable upper floor.
Good to Know: Popular ways to add bedrooms/bathrooms without moving. Structural alterations are common.
Trussed Roof Conversions
Modern trussed roofs can often be converted by replacing internal W/M webs with engineered steels and joists, subject to calculations and Building Control approval.
Good to Know: Trussed roofs require more structural work than traditional cut roofs. For example, careful sequencing is required to maintain the shell’s stability during conversion.
Maisonette Loft Conversions
Upper-floor maisonettes can be suitable for conversion, subject to title, freeholder and planning. The survey determines whether a dormer, hip-to-gable or rooflight-only scheme is appropriate.
Good to Know: Permissions and party wall matters are typical; we guide you through the process.
How Our Loft Conversion Specialists Work
Our loft conversion specialists follow a set process, designed to minimise disruptions and create usable space:
- Site Survey: We conduct a comprehensive site survey to provide a clear picture of your roof structure and size. Our specialists will assess potential conversion options and stair positioning and provide advice on planning constraints.
- Design and Permission: While many roof conversions fall under permitted development rights, it depends on your home’s location, listed building status, and whether the conversion could cause disruptions to neighbouring properties. We aim to design solutions that reduce the need for planning permission, while supporting you through the application process if necessary.
- Build and Sign-Off: We aim to keep all planning and building work in-house to ensure quality. Wherever possible, our specialists will work from the outside to avoid disruptions.
- Aftercare: Once we have completed all works, a conversion expert will walk you through the project, resolve any agreed snags, and arrange a building control inspection certificate.
Which Loft Conversion Style Works for My Home?
The right loft conversion for your house depends on its style, location, and the existing roof structure. Our experts will carefully assess your property and discuss all possible options with you.
Detached House Loft Conversions
Detached homes often have the most flexibility, because there are no shared walls and easier access for construction work.
However, while many detached properties can enjoy versatile loft conversion solutions, this also depends on the style of your home, whether you live in a conservation area, and your home’s listed building status.
Popular conversion types for detached homes include:
- Velux Loft Conversions: If you have sufficient head height, a Velux conversion can open up the room and let in more natural light through window placement.
- Dormer Loft Conversions: Dormer conversions are a simple way to maximise space on a steeply pitched roof. By installing a vertical wall, you can turn the roof area into a spacious room.
- Dual Hip to Gable: Dual hip-to-gable conversions are suitable for detached houses and provide extra roof space. However, the work requires more planning, and it can be more intensive.
Semi Detached House Loft Conversions
Semi-detached houses may face more planning restrictions due to the shared wall with the neighbouring property. While basic conversions may not require planning permission, more complex projects will. It depends on the loft conversion you choose.
Solutions for semi-detached properties include:
- L-Shape Conversions: L-Shape loft conversions are popular for Victorian and Edwardian homes. By installing two dormers that meet at a right angle, we can create extra space.
- Hip to Gable: While dual hip-to-gable conversions are suitable for detached homes, a traditional hip-to-gable conversion transforms a sloped roof into a vertical wall.
- Rear Box Conversions: Rear dormer loft conversions can transform your available roof structure into a spacious room that can potentially accommodate a large bedroom or multiple rooms.
Terraced House Loft Conversions
Terraced house conversions can pose more challenges due to limited space and party walls. However, there are solutions available, and our specialists will help you find them. Popular options include:
- Rear Box Conversions: Ideal for adding extra living space, without compromising street views.
- Velux Conversion: The simplicity of Velux conversions appeals to terraced house owners.
- L-Shape Conversions: Older Victorian and Edwardian-style terraced homes may be able to accommodate an L-shape conversion, which typically falls under permitted development rights (though there may be some exceptions).
Why Choose CS Lofts for your Loft Conversion Project?
At CS Lofts, we pride ourselves on offering stunning conversions in South London and Kent.
When you make use of your professional loft conversion specialist, you can take advantage of affordable solutions, full-service support from start to finish, and decades of combined experience.
In-house design & engineering team
We can support your product from start to finish thanks to an in-house team of experts. Our structural engineer and architect will help you plan the conversion and go out of our way to ensure a stress-free process.
We're always on time
You don’t want to wait around for your loft conversion, and we make sure you don’t have to. Once we understand the scope of your project, we’ll provide a timeline. If the project extends beyond this timeline, we’ll deduct £500 from the cost every week.
Guaranteed quality
We aim to keep construction in-house rather than outsourcing to outside contractors, ensuring unparalleled quality. Plus, each conversion project we complete comes with a 10-year guarantee.
Get a Free Quote Today
Whether you want to add extra floor space to your home or upsize without the stress of moving, our experts can help. Please take a look at our previous projects and contact us for a free quote today.
FAQs
How much will my loft conversion cost?
As all our work is bespoke, we don’t offer outright costs. Instead, a professional will visit your home and conduct a free survey. Once we understand the type of loft conversion you need and the project’s scope, you’ll receive a free quote.
Where does CS Lofts operate?
We offer affordable loft conversions across South London and Kent, including Bromley, Bexley, Sutton, Tooting, Redhill, Crystal Palace, Dulwich, Reigate, and many more.
Will I need to apply for planning permission?
It depends on your property and the project’s size. In some cases, the loft conversion may fall under permitted development rights, meaning you won’t need to apply for planning permission.
Once we review your home, our experts will determine whether you need planning permission and support you through the application process.
How do I know which type of loft conversion my home supports?
Your roof dictates the type. Our on-site assessment checks ridge height, roof form, loads, stair placement and planning context, then we confirm the appropriate solution.
Can I convert a trussed roof?
Often, yes, with the right steelwork and design. We’ll confirm feasibility via structural calculations.
Will it add value to my property?
In most cases, yes. A well-designed loft conversion can add up to 20% to your home’s market value, depending on the location and finish. It’s one of the most cost-effective ways to gain extra living space, especially if it adds a bedroom and bathroom, which typically boost resale appeal. During your consultation, we can provide guidance on achieving the best return.
Do I need building regulations approval?
Yes. All attic conversions must meet Building Regulations to ensure structural safety, fire protection, insulation, ventilation and staircase compliance. We’ll handle the application and liaise with Building Control throughout the build, ensuring your project is fully signed off before completion.