A Velux loft conversion is a thoughtful utilisation of what might otherwise be an underused part of your home. Because this type of conversion doesn’t alter the external roof structure, it’s often the most straightforward and cost-effective option available. It’s a particularly attractive choice if you’re constrained by planning regulations that make other types of conversions unfeasible. While a Velux conversion can legally transform your loft into a usable room, the options may be somewhat limited, usually to a single bedroom. Additionally, the room’s shape and available headroom will be dictated by your existing roofline and sloping walls.

Here at Visionary Lofts, we’ve turned countless dusty attics into beautiful, functional spaces, and we’re thrilled to share our insights. This all-inclusive guide serves as your ultimate resource, whether you’re a homeowner keen to revitalise that forgotten loft or a professional looking to broaden your skill set.

Understanding Velux Loft Conversions

Definition of Velux Loft Conversion

A Velux Loft Conversion is distinguished by the installation of Velux roof windows that sit flush with the existing roofline. This is an important feature as it means minimal structural alterations to the roof are needed, making it a straightforward, less invasive process. The windows are strategically placed to bring in natural light and ventilation, enhancing the usability of the space.

From our extensive experience at Visionary Lofts, one of the most memorable projects involved converting an attic in a historical property. The challenge was enormous due to the property’s age, but successfully integrating Velux windows while preserving the building’s integrity was a triumph.



More Space

One of the most palpable benefits of a Velux Loft Conversion is the additional living space it provides. Imagine turning that cluttered attic into a home office, a guest bedroom, or even a cosy den to unwind. The possibilities are as endless as they are exciting.


Improved Storage

Gone are the days when attics were dark, inaccessible spaces used only for storing Christmas decorations and old toys. With a Velux Loft Conversion, you can design smart storage solutions that are easy to access and don’t compromise on aesthetics. Built-in wardrobes, shelves, or even a mini-library could find a home in your converted loft.



When it comes to home renovations, the cost is often a significant factor, and here is where Velux Loft Conversions shine. Their relatively simple installation process means fewer labour hours and materials, translating into lower overall costs when compared to more complex types of loft conversions.


Energy Efficiency

One feature that is often overlooked but highly beneficial is the energy efficiency that Velux windows offer. Designed to provide excellent thermal insulation, these windows can help keep your new space warm in the winter and cool in the summer, reducing your energy bills in the long run.

Cost of Velux Loft Conversion [2023]

Factors Influencing Cost

Determining a price quote for a Velux Loft Conversion involves understanding a multitude of variables. While this type of conversion is often more budget-friendly than others, the final price can be shaped by numerous factors. 

These range from the dimensions and intricacy of your planned conversion to the number and kind of Velux windows you opt for. The existing state of your roof and loft also come into play and of course labor costs. Additional expenditures might include planning permissions and custom features like tailored storage solutions or special insulation materials.

Average Costs

Based on a wide range of projects we’ve completed at Visionary Lofts, a Velux Loft Conversion can cost between £15,000 to £30,000, including VAT. This gives you a more nuanced understanding of the budget you should consider for your Velux conversion project. Please note that these are general guidelines and the actual costs can vary depending on the specifics of your individual project.

Average Costs of Velux Loft Conversions in the UK

Importance of Professional Quotes

Getting a quote from a reputable contractor like Visionary Lofts offers you a comprehensive understanding of your project’s financial scope. It is an invaluable resource for understanding not just what you’re paying for, but also for avoiding any hidden costs that might surprise you later. Ensure that the quote includes a full breakdown of costs, from materials and labour to any potential additional expenses like planning applications or structural assessments.

Financial Benefits of Velux Loft Conversion

Return on Investment

The financial gains from a Velux Loft Conversion aren’t merely confined to the added utility or aesthetic enhancement of your property; they also include a substantial return on investment (ROI). Based on our extensive experience, a loft conversion can add up to 20% to the value of a property. When you consider that against the initial investment, the ROI can be quite appealing.

Property Value Increase

Adding a functional, well-designed space to your home is a surefire way to increase its market value. Whether you’re planning to sell immediately or keep it as a long-term investment, the added value can be substantial. Moreover, unlike other home improvement projects that might go out of style over time, the universal appeal of extra space remains a constant draw for potential buyers.

Financial Benefits of Velux Loft Conversions

This chart indicates that the return on investment is often the more significant financial benefit.

Evaluating Velux Loft Conversion Worth

Pros and Cons of Velux Loft Conversion

Like any significant investment, it’s crucial to weigh the pros and cons before diving in. On the plus side, Velux Loft Conversions are less disruptive to your daily life during construction, offer excellent energy efficiency, and generally don’t require planning permission. 

On the downside, they are limited by the existing structure of your roof and might not offer as much headroom as other types of loft conversions.

Pros of Velux Loft Conversion Cons of Velux Loft Conversion
Less disruptive during construction Limited by existing roof structure
Excellent energy efficiency May offer less headroom
Generally doesn’t require planning permission

Is Velux Conversion Right for You?

Determining if a Velux Loft Conversion is the right choice for you involves considering various factors such as your budget, the existing structure of your home, and your long-term plans. If you’re looking for a relatively quick, less disruptive, and cost-effective way to add value and space to your home, then a Velux conversion could be an excellent fit.

Who Should Consider Velux Loft Conversion?

Target Audience

The target audience for a Velux Loft Conversion is incredibly diverse, spanning from young couples in need of an extra bedroom for a growing family to empty-nesters looking to transform unused loft space into a cosy home office or a luxurious en-suite bedroom. From our perspective at Visionary Lofts, we’ve seen an increasing number of property developers keen to make their listings more attractive with Velux Loft Conversions.

Reasons to Choose Velux

While there are several types of loft conversions, Velux stands out for its simplicity, cost-effectiveness, and quick installation time. For properties with ample headroom and a relatively steep pitch, a Velux Loft Conversion can offer a straightforward solution that preserves the original roofline and often doesn’t require planning permission. We find velux conversions ideal for people who want a less intrusive form of construction and are comfortable with the existing loft space’s basic shape and size.

Room Types Possible with Velux


Transforming a loft into a bedroom is often the dream, and with the inflow of natural light, the ambiance is genuinely soothing. If you’re planning to use the loft space for your child, consider positioning the bed near a Velux window. Youngsters tend to love cosy, snug spaces, and the window adds a magical touch. In our work, we’ve transformed many lofts into charming bedrooms, and the joy it brings to families makes every project special.


In an era where remote work is becoming increasingly prevalent, having a dedicated home office is a boon. A Velux Loft Conversion can provide a secluded space, free from the household’s hustle and bustle. The natural light can increase productivity and reduce eye strain, making it an excellent choice for a home office.


For families with children, a Velux Loft Conversion can provide the perfect playroom. The ample natural light and possibility of integrating clever storage solutions make it an ideal space for both fun and functionality.


While not as common, it’s entirely feasible to include a bathroom in your Velux Loft Conversion. The natural light streaming in through the Velux windows can create a spa-like atmosphere, though plumbing complexities may require a more significant investment.

Possible Room Types with Velux Loft Conversions

As you can see, bedrooms are the most commonly created rooms, making up 60% of the conversions. Offices come next at 25%, followed by playrooms at 10%, and bathrooms at 5%.

Building Requirements for Velux Conversion

Headroom and Roof Strength

Before embarking on your Velux Loft Conversion journey, you’ll need to assess your existing structure’s suitability. Headroom is a crucial factor. A general rule of thumb is a minimum height of 2.2 metres from the floor to the highest point in the loft. Also, the strength of your existing roof structure needs to be assessed to ensure it can support the new conversion.

Roof Types

The type of roof you have can also influence your Velux conversion’s feasibility and cost. Gabled roofs are usually the most straightforward and cost-effective to convert. However, more complex roof types like hipped roofs may involve additional work and costs.

Expert Consultation

It’s crucial to consult a structural engineer or a loft conversion specialist for an initial assessment. Here at Visionary Lofts, our first consultation isn’t just about giving you a quote; it’s an invaluable session where we share insights on what’s feasible given your existing structure, down to the type of Velux windows that would best suit your needs.

Requirement Description
Headroom Minimum height of 2.2 metres required
Roof Strength Existing roof structure must be strong enough to support the conversion
Roof Types Gabled roofs are usually the most straightforward to convert

Planning Permission for Velux

General Guidelines

Generally, Velux Loft Conversions are considered “Permitted Development,” which means they often don’t require formal planning permission. However, this rule applies only if the conversion doesn’t significantly alter the property’s external appearance. It’s always prudent to check local planning guidelines, as they can vary depending on your location. For example, if you reside in a Conservation Area or a listed building, more stringent rules might apply.

Special Cases

Beyond the typical scenarios, there are some exceptions where planning permission may be necessary. We’ve navigated the complexities of planning permissions in various London boroughs, and the experience has been a learning curve, to say the least. But every successful project justifies the initial hurdles.

If your Velux windows face a highway, or if the conversion includes a balcony or raised platform, planning permission is likely required. Additionally, some local councils have particular guidelines about changing a property’s façade or external appearance, making it essential to consult local planning offices for specific regulations.

Starting Your Velux Loft Conversion

Initial Consultation

The first step in your Velux Loft Conversion journey should be a consultation with professionals like Visionary Lofts. This isn’t just about obtaining quotes but also about understanding what’s feasible with your existing structure. We at Visually Lofts can offer invaluable insights into the practical aspects, such as the type of Velux windows that would best suit your needs, or if your existing heating and electrical systems will suffice for the new space.

Key Considerations

Before you start, there are several key points you must consider. These include, but are not limited to, structural integrity, electrical and plumbing modifications, and insulation requirements. You’ll also want to think about the overall design aesthetic, ensuring it blends seamlessly with the rest of the house. Our most memorable projects often involved overcoming unique challenges, like customising a reading nook by a Velux window or figuring out a complex insulation requirement. It’s these complexities that make the outcome so rewarding.

Importance of Daylight in Velux Conversions

Daylight Benefits

Natural light is more than just a luxury; it’s a necessity for good health, both physical and emotional. The Velux windows in your loft conversion will provide an abundance of natural light, which can improve mood, enhance productivity, and even offer Vitamin D exposure. Furthermore, natural light can make a space look larger and more inviting, a definite advantage in a loft space that might otherwise feel cramped or confined.

While Velux windows are excellent for bringing in natural light, it’s essential to calculate the ideal daylight ratio for your specific needs. This calculation involves the proportion of window area to floor area and can vary depending on the room’s intended use. For instance, an office may require a different daylight ratio compared to a bedroom or a playroom.

Skylight Options

Apart from the standard Velux windows, you might want to consider skylights as an alternative or an addition. Skylights can be particularly useful in areas where wall space is limited, or where you want to bring in light from above. They also come in various styles and functionalities, including ones that can open for ventilation or even provide an emergency exit.

Tips for Successful Velux Conversion

Maximising Roof Space

One of the inherent advantages of a Velux Loft Conversion is the efficient use of existing roof space. To maximise this space, consider employing built-in storage solutions like drawers in the eaves or custom shelving units. Additionally, strategic placement of Velux windows can help illuminate dark corners, making the room feel more spacious and welcoming.

Roof Maintenance

Your roof is going to bear the brunt of the weather, and it’s essential to keep it in prime condition, especially after installing new Velux windows or skylights. Regular inspections for leaks, cracks, and wear and tear can prolong the lifespan of your conversion and prevent costly future repairs. Ensure that your chosen contractor provides a thorough post-installation guide on how to maintain your new roof features.

Insulation Tips

Insulation is vital for the comfort, energy efficiency, and longevity of your loft conversion. The type of insulation—be it blanket, loose-fill, or foam boards—will depend on various factors such as roof structure, climate, and intended room use. Acoustic insulation is another consideration if the room will serve a purpose requiring sound-proofing, like a home office or a media room.

Velux Loft Conversion: Real Life Stories

One of the most compelling ways to understand the impact and potential of Velux Loft Conversions is through real-life case studies.

Nimira Velji: “We recently hired Visionary Lofts to transform our attic into a beautiful living space, and we are thrilled with the results! From start to finish, the team were professional, friendly, and attentive to every detail. The entire process was smooth and stress-free, thanks to the expertise and communication of their team. They listened carefully to our ideas and concerns and provided expert advice and guidance to help us make informed decisions every step of the way. The craftsmanship of the work is exceptional, and the attention to detail is evident in every aspect of the finished space. The loft is now a stunning, functional, comfortable addition to our home, and we couldn’t be happier with the outcome. We highly recommend Visionary Lofts to anyone looking to transform their home. They provided an outstanding service. Five stars all around!”

Natacha Derian Schmitt: “Visionary Lofts recently completed our first floor extension and we could not of asked for a better standard of work and professionalism from their amazing team. Our Edwardian two story flat is already built into the roof so we didn’t have a loft extension as an option. We have two children approaching teenagers so we really needed to turn our two bedroom flat into three so the boys could have their own rooms. The only option was a small space extending out on our first floor & above our downstairs neighbours bathroom (with her consent) After the second planning application was approved we set about looking for a company to help us achieve this. We had site visits and quotes from many companies before we made our decision. From the first meeting and site visit with JP and Marius (Visionary’s project manager) they were by far the most professional. They took their time to think about every detail and gave us realistic advice on what could be achieved. They were patient with any changes and requests and nothing was too much trouble. There was great communication and we were always kept up to date with what would be happening next & any questions we had were answered. On Saturday’s Kasia would come for a meeting to summarise the work compleated the schedule of the week ahead which was really helpful. Their team of highly skilled workmen were always on time and cracked on with the job to a very high standard always leaving the area clean after work was completed and hardly stopping for the tea and biscuits I was constantly offering them! With all the building nightmare’s you hear about we never dreamed it could all go so smoothly- and like us many of our neighbours who watched the work in progress could not believe how quickly the build was completed. It’s great to use a local company based in West Norwood and couldn’t recommend Visionary Lofts team enough.”


Navigating the world of Velux Loft Conversions might seem straightforward at first glance, but as we’ve seen, it’s a journey laden with multiple considerations, from cost factors to building regulations. At Visionary Lofts, we’ve had the privilege of overseeing numerous loft conversion projects, each with its unique set of challenges and rewards. The satisfaction we felt after successfully navigating these challenges and delivering a space that the homeowners loved was unparalleled. It’s moments like these that make all the hard work worthwhile.

The bottom line is that Velux conversions offer a compelling blend of simplicity, cost-effectiveness, and aesthetic appeal, making them an excellent choice for many. However, the process isn’t without its intricacies. Professional advice, therefore, isn’t just a luxury; it’s a necessity. Here at Visionary Lofts, we’re committed to providing that expert guidance every step of the way, ensuring your loft conversion not only meets but exceeds your expectations.

FAQs About Velux Loft Conversions

How much is a Velux loft conversion?

The cost of a Velux loft conversion can vary widely depending on various factors such as location, size, and complexity. However, they are generally considered one of the more affordable types of loft conversion, with prices often starting at around £20,000 to £25,000.

Are Velux loft conversions worth it?

The “worth” of a Velux loft conversion can be subjective and depends on your specific needs and goals. However, they are generally praised for offering good value for money. They are less complex than other types of loft conversions, which usually means they are quicker to complete and less expensive. Plus, they can add significant value to your property and provide additional usable space.

Can I do a Velux loft conversion?

Generally, Velux loft conversions are suitable for properties with ample headroom and a relatively steep pitch in the existing roof. You’ll also need to consider planning permissions and building regulations. It’s always advisable to consult professionals for a thorough assessment.

What height should a Velux loft conversion be?

The minimum height for any loft conversion, including Velux, is usually 2.2 metres from the floor to the highest point in the loft. This ensures enough headroom to move around comfortably once the conversion is complete.

What is the cheapest way to convert lofts?

Velux conversions are often cited as the most cost-effective type of loft conversion because they generally don’t require drastic changes to the existing structure of the home. However, the cheapest way can depend on various factors like the condition of your existing loft space and what you intend to use it for.