Loft Conversions — KK Construction London Ltd
    Loft Conversions

    Loft Conversions
    Across London

    Bespoke dormer, mansard and hip-to-gable loft conversions — designed and built to add a stunning new floor to your London home.

    Fully Insured
    NHBC Registered
    On-Time Guarantee
    Family Run Since 2005
    Built for London Homes

    A whole new floor, without losing your garden

    Loft conversions are the smartest way to add valuable living space to a London home — a master suite, home office, guest bedroom or playroom — without sacrificing footprint or outdoor space. We deliver bespoke dormer, mansard, L-shape, Velux and hip-to-gable conversions for period and contemporary properties across London and the Home Counties.

    Two decades of premium residential experience, a single point of contact, transparent fixed-price quotes — and craftsmanship that adds long-term value to your property.

    Premium loft conversion in London
    Why Convert

    Benefits of a Loft Conversion

    The highest-return improvement you can make to a London home — added space, added value, added light.

    Add Valuable Living Space

    Unlock an extra bedroom, ensuite or home office without sacrificing garden or footprint — the smartest way to extend a London home.

    Boost Property Value by Up To 20%

    A well-designed loft conversion is consistently one of the highest-ROI improvements you can make to a London property.

    Light-Filled Bespoke Interiors

    Rooflights, dormers and Juliet balconies flood your new space with natural light and far-reaching London views.

    Often No Planning Permission Needed

    Most conversions fall under Permitted Development. We handle Building Regs, party walls and structural calcs end-to-end.

    Our Specialisms

    Types of Loft Conversions

    From minimally invasive Velux conversions to full mansard transformations — we build them all.

    Dormer Loft Conversions

    The most popular loft conversion in London. Dormer extensions create additional headroom, increase usable floor space, and provide room for bedrooms, home offices, or en-suite bathrooms.

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    Mansard Loft Conversions

    Ideal for period properties and urban homes, mansard loft conversions maximise living space by extending the roof structure and creating a near-vertical rear wall.

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    Velux & Hip-to-Gable Loft Conversion

    Cost-effective loft conversion options that increase usable space and natural light. Ideal for properties with existing roof height or semi-detached homes requiring additional room.

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    Featured Work

    Featured Loft Conversion Projects

    A selection of completed loft conversions across London & Home Counties.

    How It Works

    Our 4-Step Process

    A clear, transparent journey from first conversation to handover.

    1

    Consultation

    Free in-home loft survey — we assess headroom, structure and planning route before quoting.

    2

    Design & Planning

    Architectural drawings, structural calcs, party-wall agreements and a fixed-price quote.

    3

    Build

    Scaffold, steels, dormer construction, insulation, electrics, plumbing and bespoke joinery — managed end-to-end.

    4

    Handover

    Building Regs sign-off, snagging, deep clean and a fully guaranteed new floor of your home.

    Areas We Serve

    Loft Conversions Across London & Richmond

    Looking for a loft conversion specialist closer to home? Explore our dedicated location pages.

    FAQs

    Frequently Asked Questions

    Ready to Transform Your Loft?

    Book a free in-home consultation with our team — no obligation, just honest advice.