Loft Conversion London, Loft Extension Specialists

A loft conversion is one of the most effective ways to add liveable space without extending into your garden. Home Renovation Services London delivers loft conversion services in London, turning unused attics into bright bedrooms, home offices, and ensuite spaces. We manage the full build from structural assessment and design through to RSJ installation, dormer or mansard construction, insulation, staircase fitting, and final finishing. Every stage is planned to meet Building Regulations and to suit the style and layout of your property.

From a Velux conversion through to a rear dormer, hip-to-gable, or mansard loft extension, we tailor the approach to your roof type, head height, and how you want to use the new space. We focus on practical layouts, strong structural detailing, and a clean finish, so the loft feels like a natural part of your home rather than an add-on.

What Our Loft Conversion Service Covers

• Measured survey, head-height checks, and feasibility advice for your loft conversion
• Architectural layout planning and structural engineering calculations
• Structural steel RSJ supply and installation to support new floor and roof loads
• Dormer loft conversions, mansard loft extensions, and hip-to-gable roof alterations
• Velux roof window installation to bring in natural light and improve ventilation
• New loft staircase design and installation to suit the existing hallway layout
• High-performance insulation and soundproofing to meet Building Regulations
• Electrical works including sockets, lighting, smoke alarms, and heat detector upgrades
• Plumbing and heating runs for radiators, hot and cold feeds, and ensuite bathrooms where required
• Plasterboarding, plastering, and skim finishes for walls and sloped ceilings
• Joinery and built-in storage to maximise awkward eaves space
• Building Control coordination, inspections, and completion sign-off

A typical loft conversion follows a structured sequence, depending on roof structure and the type of conversion. It often starts with scaffolding and opening up the loft space, followed by strengthening the floor and installing structural steels to support the new loads. Where dormers or roof alterations are required, we frame and weatherproof the new structure before moving into internal works. We also aim to reduce disruption by keeping access controlled and protecting the rest of the home from dust.

Once the structure is secure and watertight, we complete first-fix electrics and plumbing, install insulation, and fit the staircase. Walls and ceilings are then plasterboarded and skimmed, followed by second-fix electrics, joinery, flooring, and decoration. If an ensuite is included, we coordinate waterproofing, tiling, and sanitaryware fitting in the correct order. We finish with snagging and a full clean before handover, subject to the agreed scope.

Our Loft Conversion Process

Frequently asked questions