Unlock the hidden potential in your attic space. We create beautiful, functional loft conversions tailored to your needs, whether you want an extra bedroom, a home office, or a playroom. Our expert team ensures all structural requirements and building regulations are met to the highest standards.
Also serving: Loft Conversions in Penarth · Caerphilly

A dormer loft conversion is one of the most popular ways to expand your home in Cardiff. By extending vertically from the sloping roof, it creates significant headroom and floor space. Our bespoke dormer conversions are perfect for adding master bedrooms, en-suites, or spacious home offices. At All Aspects CDF LTD, we manage the entire dormer conversion process, from architectural design and planning permissions to structural work and finishing touches. We ensure the new structure seamlessly blends with your property’s exterior while providing maximum natural light inside.
ENQUIRE NOW
If you already have sufficient headroom in your attic, a Velux or rooflight conversion is a fantastic, cost-effective way to create new living space without altering your roof structure. This type of conversion rarely requires planning permission and can be completed faster than other styles. We install high-quality Velux windows to flood your new room with natural light, along with complete insulation, flooring, and electrical work. It’s an ideal solution for creating a peaceful home office, a bright playroom, or an additional guest bedroom.
ENQUIRE NOW
A Mansard loft conversion typically involves raising the party wall and altering one or both sides of your roof to create a steeply sloping lower section and a flat top. This style provides the maximum amount of interior space, essentially adding a whole new storey to your property. Our expert team has extensive experience designing and building complex Mansard conversions across Cardiff. We handle the strict building regulations and planning permissions often required for this style, delivering a stunning, expansive new living area.
ENQUIRE NOW
Ideal for semi-detached or detached properties with a sloping "hipped" side roof, a hip-to-gable conversion extends the sloping side vertically to create a flat gable end. This transforms a cramped, low-ceiling attic into a vast, usable living space. We specialise in seamless hip-to-gable extensions that match your home’s existing brickwork and roofing perfectly. Whether you need a large master suite or two additional bedrooms, we construct a durable, beautifully finished space tailored to your family's needs.
ENQUIRE NOW
A high-quality loft conversion is one of the smartest investments you can make, instantly boosting your property’s value while providing the extra space you desperately need. Our loft conversion services in Cardiff are renowned for exceptional craftsmanship and bespoke design.
Ready to transform your dusty attic into your favorite room in the house? Call us today or request a free quote. As Cardiff’s trusted loft conversion specialists, we guarantee a smooth, stress-free build and an incredible final result.
ENQUIRE NOWMany loft conversions, such as Velux/rooflight and some dormers, fall under Permitted Development and don't require planning permission. However, larger alterations like Mansard or Hip-to-Gable often do. We assess your property and handle all necessary planning applications for you.
Most lofts can be converted, provided there is enough headroom (usually a minimum of 2.2m from the floor joists to the ridge timber). We offer a free, no-obligation site survey to assess your loft's suitability and discuss your options.
A simple Velux conversion might take 4-6 weeks, while a more complex Dormer or Mansard conversion typically takes 8-10 weeks. We provide a clear, realistic timeline before work begins and work efficiently to minimize disruption.
Absolutely. A well-executed loft conversion that adds a bedroom and bathroom can increase the value of a property by up to 20%, making it one of the most profitable home improvements you can undertake.
Whether you're planning a small renovation or a complete transformation, we're here to help. Get in touch with our team to discuss your project, request a free quote, or arrange a consultation. We'll guide you through every step of the process.
11a Royal Buildings, Stanwell Road
Penarth, CF64 3ED
info@allaspectsconstruction.co.uk
02920 036 677
Nick (Direct): 07519 377053
120 Nantgarw Rd
Caerphilly, CF83 1AP
info@allaspectsconstruction.co.uk
02920 036 677
Nick (Direct): 07519 377053
Cardiff, Barry Town, Penarth & Sully, Dinas Powys, Caerphilly
Visit our sister company, Cardiff & Caerphilly Construction.