Loft Conversion & Extension
Loft Conversion & Extension Specialists — UK-Wide Delivery
Unlock the full potential of your home with a professionally managed loft conversion. Vantix Group handles planning, structural work, build and fit-out from start to finish.
A loft conversion is one of the most effective ways to add significant floor area to a house without losing garden space or changing the street elevation. Done well, it adds a bedroom, a bathroom, a home office, or a combination of all three — and it adds value to the property that typically exceeds the cost of the work. Done badly, it creates structural problems, planning complications, and a space that doesn't function as intended.
Vantix Group manages loft conversions as a complete service. We assess the structural feasibility, handle the planning application or permitted development confirmation, manage the Party Wall Act process where it applies, carry out the structural work, and complete the fit-out to the standard you specify. You deal with one team throughout — not a series of separate contractors who each do their bit and then move on.
We work across the whole of the UK on loft conversion projects. Whether your home is in a city, a market town, or a rural area, you get the same team and the same standard of delivery. You can see examples of completed loft conversion projects on our projects page.
JCT-Backed Contracts
Every project protected by a formal JCT contract.
Single Point of Contact
One person accountable from brief to handover.
Party Wall Act Compliant
We handle notices, surveyors and the full process.
Signs a Loft Conversion Is Right for Your Home
The clearest sign is that you've run out of space but you don't want to move. A loft conversion is almost always cheaper than moving — when you factor in stamp duty, agent fees, legal costs, and the cost of the move itself, the gap between what you'd spend on a conversion and what you'd spend on a larger house is significant.
Other indicators: you have a loft that's currently used only for storage, your roof pitch is steep enough to create usable headroom (typically 2.2m or more at the ridge), and you're in a property type where loft conversions are common — Victorian and Edwardian terraces, semis, and detached houses all convert well. Bungalows and properties with complex roof structures require more careful assessment.
The warning signs that a loft conversion project is going wrong before it starts: a contractor who quotes without assessing the structural feasibility, a quote that doesn't include the planning or building regulations process, and a programme that seems too short for the scope of work. A typical loft conversion takes 8–12 weeks from start to handover — less than that usually means corners are being cut.
Our Loft Conversion Options
A dormer loft conversion is the most common type we build — it involves extending the roof vertically to create a box-shaped structure with vertical walls and a flat or pitched roof. Dormers can be built to the rear, the side, or both, and they create the most usable floor area of any loft conversion type. A hip-to-gable conversion extends the sloping hip end of a roof to create a vertical gable wall, which is then combined with a rear dormer to maximise the usable space. This is particularly effective on semi-detached and detached properties.
A mansard loft conversion involves rebuilding the roof structure entirely to create a near-vertical rear slope with a flat roof on top. Mansards create the most floor area of any conversion type and are common in London and other urban areas where planning policy permits them. They typically require full planning permission rather than permitted development. A Velux or roof light conversion is the simplest type — it involves adding roof lights to the existing roof structure without changing its profile. It's the most cost-effective option but creates less usable space than a dormer or mansard.
An L-shaped dormer combines a rear dormer with a side dormer to create an L-shaped addition that maximises the floor area of the conversion. This is particularly effective on Victorian terraces where the rear outrigger creates a natural L-shape. All of our loft conversion work is managed under our construction project management approach — single point of contact, formal programme, and a clear handover process.
Why Choose Vantix Group for Your Loft Conversion?
Every Vantix Group loft conversion is backed by a JCT contract, full public liability and professional indemnity insurance, and a formal programme agreed before work starts. We handle the planning process, the Party Wall Act compliance, the structural design coordination, and the full build and fit-out. You get a single point of contact throughout — the same person who takes your brief is accountable for the handover.
Read more about how we work on our about page, or get in touch to discuss your loft conversion.
Loft Conversion Types Covered
Ready to Discuss Your Loft Conversion?
Send us a brief and we'll respond within one business day. No hard sell — just a straight conversation about your project.