Tell us what you need to find a matching loft conversion specialist
Get free quotes from professionals near you
Compare offers and choose the one that best matches your need
A Complete Guide to Velux Loft Conversion Cost
- A standard Velux conversion for a medium-sized loft of 30-40m2 with 3-4 Velux windows costs between £20,000 and £30,000.
- Velux conversions are the most cost effective and require less work than other loft conversions, such as Dormer or Hip-to-Gable, for the same area.
- This accounts for work such as reinforcing the floor, adding insulation and staircase, electrical wiring and fitting Velux windows.
- Converting your attic into a functional space can boost your home’s value by 20-25%, often exceeding the initial investment.
Besides raising your property’s value, a Velux loft conversion offers income opportunities through rentals, Airbnb, etc. This makes it an appealing choice if you’re looking to expand your income and maximise your home’s potential.
In this guide, we’ll discuss the expenses involved in converting your attic to a Velux loft and the potential benefits you can gain despite these costs.
- Describe your needs
- Get free quotes
- Choose the best offer
How Much Does a Velux Loft Conversion Cost?
In the UK in 2024, a full small—to medium-sized Velux loft conversion costs range from £15,000 to £30,000. However, the cost will be higher if the conversion area is larger. This cost range includes strengthening the current floor, installing flooring, insulation, plasterboard, Velux windows, and a staircase.
Here’s a more detailed breakdown of Velux loft conversion cost range by small, medium and large-sized areas:
- Velux Loft Space 20-30m2: The cost for properties of this size range, including two Velux windows (78cm x 98cm), usually falls between £15,000 and £20,000. This cost range includes floor strengthening, basic flooring, thermal insulation, plaster boarding, electrical installation, and window and stair installation.
- Velux Loft Space 30-40m2: The typical cost for a loft conversion in this range is between £20,000 and £30,000. This cost normally involves placing 3-4 Velux windows, either small MK04 (78 cm x 98cm) or larger sizes, like MK08 (78cm x 140cm). This price estimate includes labour and materials.
- Velux Loft Space 40-50m2 +: A loft conversion of this size typically costs between £30,000 and £45,000 and above. The cost range includes 4-6 mixed Velux windows, labour, and additional interior work.
It’s important to know that prices vary based on location, finishing materials and professional fees. Consult your local architect or structural engineer for more accurate prices based on your loft size and interior finishings.
Still, Velux loft conversions are the easiest and most affordable option for UK homeowners in 2024. They require fewer structural alterations and no permits (unless in a conservation area). They also have faster completion times than other conversions, making them more cost-effective.
Converting dormers, for instance, can cost approximately £30,000 for a comparable area of 20m2. Additionally, the complexity of their construction and the structural modifications contribute to the higher costs associated with hip-to-gable and mansard conversions, which can exceed £40,000.
Let’s discuss the factors that affect the cost of Velux loft conversions in more detail.
Velux Loft Conversion Cost By Type of Window
When selecting a Velux window for your loft conversion, consider its impact on your home’s appearance and how you can make it cheaper to heat and keep warm.
This guide summarises the different Velux windows, their main features and estimated prices.
| Pitched Roof Types | Features | Cost + Installation |
|---|---|---|
| Centre-Pivot | Standard operation | £929 – £1324 |
| Top-Hung | Unobstructed view | £1,253 – £1,850 |
| Top-Hung w/ Thermo | Enhanced insulation | £1,300 – £2,000 |
| Integra Electric/Solar | Remote operation | £1434 – £2,250 |
| Cabrio Balcony | Balcony access | £4,300 – £6,800* |
| Conservation | For old, listed buildings | £1,200 – £2,200 |
| Prices include VAT |
These approximate prices can fluctuate based on size, type and additional features such as glazing, solar, electric or manual. Always check with your local Velux window distributors or Velux websites.
What Affects The Costs Of Your Velux Loft Conversion?
Various factors influence the cost of a Velux loft conversion, which we’ll discuss here.
- Your location: Location plays a significant role in determining the cost of your loft conversion. For example, you can expect to pay 60.23% less in a country like Durham than in London, where the cost of living, earnings and professional services are much higher.
- Roof and loft space: The size of your loft and its current condition also matter. Larger lofts require more materials and labour, especially if you aim for well-lit and ventilated spaces with additional or larger Velux windows. Also, ensuite lofts can double the cost to somewhere between £6,000 and £10,000, according to MyJobQuote. And with premium materials, prices can go up.
- Velux Windows–types and number: The choice of Velux windows affects the cost, too. Options like energy-efficient glazing or electric opening mechanisms, while pricier upfront, offer long-term savings and comfort. However, more affordable window options are also available to suit budget constraints.
- Structural Alterations: Structural alterations, such as reinforcing the floor or changing the roof structure to meet building regulations, can increase the project’s complexity and cost.
Design and Finishes: The design and finishes you choose will also affect the ultimate price. Basic designs and finishes cost less, while custom, high-end choices raise the budget.
The costs of a Velux loft conversion can vary based on factors such as your preference and budget. We’ll explore additional costs further.
To give an initial idea, we’ve broken down the expense for a standard 30m2 Velux loft conversion that doesn’t involve changing the roof structure.
| Project | Total Approx. Cost Range(incl Labour) |
|---|---|
| Velux Windows Installation2 standard | £1,185 – £1,285 |
| Reinforcing Floor | £4,750 – £6,000 |
| Thermal Insulation | £600 – £1,600 |
| Soundproofing Wall | £1,700 – £2,100 |
| Electrical Wiring | £550 – £1,000 |
| Staircase | £1,000 – £1,500 |
| Drywall, Plasterboarding | £1,150 – £2,300 |
| Flooring (e.g. Carpets) | £250 – £1,000 |
| Decorating & Painting | £1000 – £2,000 |
Additional Expenses
Besides the essential elements of a Velux loft conversion, extra costs may arise depending on the details of your project. These additional expenses can include things like structural engineering, which we will cover. The property’s location usually determines such expenses, the existing loft’s condition, and your preferences.
Scaffolding (optional): If you plan to alter your roof structure, you may require additional support. However, if you wish to install small to medium-sized Velux windows, you can do so from inside your house without scaffolding. However, you will need scaffolding to install bigger or more complex windows. The cost of the scaffolding job can range from £100 to £200, or £22.50 per m2 per day, and depending on the complexity of the work, it may take 2 – 4 weeks.
Temporary Roof (optional): This may be needed if significant portions of the existing roof are altered or removed, ensuring the property remains weatherproof during construction. The typical cost ranges from £90 per m2 or £1,000 – £2,500 per 12-week rental.
Skip Rental Per 8 Yards: Construction waste, such as old roofing materials, plaster, and other waste generated during a conversion, must be disposed of through skips. If you plan a Velux conversion that does not require major structural alterations to the roof, an 8-yard skip is suitable for removing the waste generated during a small to medium-sized loft conversion project. The standard duration period for skip hire is usually 14 days, with prices ranging from £200 to £400 depending on location and the skip hire company you choose.
Professional Services and Costs
Structural Engineering: A structural engineer might need to assess the loft’s existing structure to ensure it can support the conversion, including any additional weight from new windows or internal finishes. This is crucial for planning any necessary reinforcements or alterations. The typical rate for a structural engineer on a half-day basis is around £400-£500, although this rate may differ depending on the location of employment, according to HouseHow.
Architect: Although hiring an architect may not always be necessary, it’s highly recommended for large and complex loft conversions. Architects can help save costs by finding smart ways to use your existing roof structure instead of making expensive changes. If you live in a conservation area, an architect can help create plans that meet the requirements. They also know current building regulations and can guide you through the process, avoiding costly delays. Their fees usually range from £500 to £2,000, which covers advice on materials, designs, and layouts.
Electrician: An electrician must ensure that your electrical wiring is installed properly and complies with UK electrical wiring regulations. These regulations guarantee a reliable and safe approach to nationwide electrical works and wiring. The cost of hiring an electrician ranges between £300 and £400 per day, but this may vary depending on the location and the individual fees charged by the professional.
Additional Features
Adding extra features to your Velux windows can make the loft more convenient, functional, and smart. While these additions may initially raise the overall cost, they can increase comfort.
Here, we summarised the additional Velux window features and their average cost:
| Features | Benefits | Cost Range |
|---|---|---|
| Solar-Powered Blinds | Heat protection, Blackout | £80 – £500 |
| Remote-Controlled | Automation | £100 + |
| VELUX ACTIVE with NETATMO | App control | £50 – £280 |
| Poles and adaptors | Manual control | £10 – £36 |
Building Regulations And Permits Cost
When considering a Velux loft conversion in the UK, it’s crucial to consider the expenses of regulation and permit fees. These requirements are necessary to guarantee safety, compliance, and respect for neighbours and contribute to the project’s total cost.
Let’s explore them.
- Planning Permission: £200
- Party Wall Fees: £800 to £1,500
- Building Control Fees: £800 to £1000
What they mean for you:
- Planning Permission: According to the UK Planning Portal, Velux loft conversions are often classified as “Permitted Development” and rarely require planning permission in the UK. However, planning permission is necessary if your property is in a conservation area or Listed Building or if you plan to change the roofline significantly. The cost of applying for planning permission is around £200 but may vary depending on your location and the governing body in your local area.
- Party Wall Fees: If the work on your loft conversion affects a wall shared with your neighbours (also known as a party wall), you must adhere to the regulations outlined in the Party Wall Act 1996. You need to inform your neighbours about the work you plan to do, and you might need to hire a party wall surveyor to create an agreement. The cost of hiring a surveyor for a party wall may vary depending on the complexity of the agreement and whether both parties need to hire surveyors. To cover party wall fees, budget roughly £800 to £1,500, say Harding Chartered Surveyors. This expense can be higher for mid-terraced homes because Party Wall agreements are required on both sides of the property.
- Building Control Fees: To ensure that your loft conversion project meets health and safety standards, it is vital to comply with building regulations. You must submit detailed plans and specifications of your project to the local building control body for approval to ensure compliance with the rules. The cost of obtaining building control approval may vary depending on the size and location of your project. Build Partner UK says the price can range from £800 to £1000.
How Much Value Does a Velux Loft Conversion Add?
A Velux loft conversion is a smart investment that can add value to your overall property and improve functionality, appeal and comfort.
- Add more room space: You can increase the number of rooms in your house by transforming the under-used attic space into functional areas, such as 2-3 bedrooms or even an ensuite room. These additions can help you live comfortably, especially with a growing family. You can also rent out the new space, bringing in additional income and adding value to your property.
- Real Estate Appeal: Installing premium Velux windows in a well-designed loft conversion can enhance the appearance and provide natural light and ventilation that potential home buyers will appreciate. By creating a functional and aesthetically pleasing space, you can significantly boost the market value of your property.
- Return on your investment (ROI): Loft conversions are among the most profitable home improvement projects, offering considerable returns on investment. A Velux loft conversion expands your living space and enhances your home’s dimensions. Such a project can boost your property’s market value by 25%, says Nationwide UK. Sometimes, this increase may even exceed the conversion cost at the time of sale.
For example, increasing your floor area by 10% can add around £10,000 to your property’s value. Adding a well-sized bedroom could further boost your home’s worth by approximately £22,100, an 11% increase. A double bedroom with an ensuite bathroom of a loft conversion can raise your property value by 20%, says building specialists GoodDesignBuild. However, in urban areas like London, adding a loft to a two-bedroom property can increase its value by almost 25%, according to Unbiased UK.
In essence, Velux loft conversions cost less than Dormer or Mansard, even with additional costs involved. These can transform your attic into a functional space, adding value to your home’s market appeal.
FAQ
Rousanna is an SEO content writer at Household Quotes with a background in digital marketing and copywriting. She creates informative, well-researched home improvement content based on practical ideas to help readers make informed decisions.