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For professional loft conversion services that will give you more space to enjoy the home you know and love.


    Services cover all sorts of buildings from listed structures in conservation areas to relatively new properties.

    Whether you want a new-build Loft extension as the first owner of a new home or you would like a dormer conversion to add more height to the space you have available in your home, Lanext Construction is the Company to talk to. We have a great deal of experience in all sorts of loft conversion projects including Velux attic extensions, L-shaped loft conversions, and bungalow attic conversions, among others. With top-quality bespoke construction methods and finishes that are delivered to a very high standard, why look anywhere else for your dream loft conversion project?


    Whether you are converting just part of your loft space or extending the entire footprint of your home upwards, we can help.

    We deal with properties of all sizes including terraced, semi-detached and detached homes. Our no-nonsense approach will mean tailoring our service to meet your needs. Whether you are working to a tight deadline or have a particular budget in mind, why not speak to us today to find out more about our exemplary attic conversion services? We can help with all aspects of the design and construction of new attic spaces including running water, electrics and soundproofing, where necessary.

    • London
    • Essex
    • Surrey
    • Hertfordshire
    • Hampshire

    We have the experience to undertake everything from dormer attic conversions to the conversion of an L-shaped roofline.

    We’ll carefully consider all of your Loft conversion options so you end up with the right style for your property. Perhaps you’ve heard of Mansard conversions or hip-to-gable attic extensions but aren’t completely clear about the differences, for example. If so, we will guide you and discuss all the approaches you might take depending on your budget and architectural preferences. Whether or not you’re extending your home outwards as well as up, our loft extension service is second-to-none.

    Professionally managed Loft conversion projects throughout the Southeast region.


    For Attic conversions in all types of property

    Sustainable Materials

    We’ll ensure your loft conversion will be built sustainably.

    • FSC wood procured
    • Thermal insulation added
    • Considerate construction processes
    • Sustainable supply chain
    • High-quality Velux windows and skylights

    Tailored To You

    Design and build project management.

    • Bespoke designs and finishes
    • Convert all or part of your loft
    • Add a bedroom, study or games room
    • Gain extra space with a Mansard extension
    • Add a Juliette balcony

    Homeowners and Residential Landlords Served

    Increase the value of your property with a professional loft conversion.

    • increase rental income with more space
    • Add value to your home
    • Stay in your home as your family grows
    • Gain a guest bedroom
    • Work from home in a dedicated space

    Please feel free to browse some of our recent loft conversion projects to familiarise yourself with the quality and scope of our work.


    Commonly asked questions

    How high should my loft be for a conversion?

    Your roof joists will need to offer a height of 2.3 metres to the apex for conventional attic extensions. If they aren’t this high, then further work may be needed to make the extension practical.

    Who needs planning permission for a loft conversion?

    This will depend on the age and location of your home as well as the scope of the loft conversion – for example, whether a dormer will be added or not and whether side-facing windows will feature. Suffice it to say that we can help you at every step of the loft conversion process whether or not permission will be needed.

    How will I access my Attic conversion?

    Typically, we’ll install stairs from the first floor to the loft that comply with building regulations and fire safety standards. If you want a lift, then let us know and we will work this into the plans.

    Can Lanext Construction convert my bungalow's loft?

    Yes, we can. Although many loft conversions are carried out on two-storey homes, we have the expertise necessary to undertake bungalow loft conversions, too.