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Completed loft conversion with natural light and skylights
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Loft Conversions

About This Service

A loft conversion is one of the most cost-effective ways to add genuine living space to your home without losing any garden. You get an extra bedroom, a home office, a bathroom — or all three — without moving house. In Worthing and across West Sussex, where property prices mean moving up is expensive, making the most of what you already have just makes sense. We handle four main types of loft conversion. A dormer conversion adds a box-shaped extension to the roof slope, giving you full-height headroom and plenty of floor space — it's by far the most popular choice. A hip-to-gable conversion extends the sloping hip end of the roof out to a vertical gable, ideal for semi-detached and detached properties in areas like Goring-by-Sea, Findon Valley and Broadwater. A mansard conversion creates a near-vertical rear roof with a flat top, maximising every square metre. And a Velux (rooflight) conversion is the most straightforward option when headroom is already adequate — roof windows are fitted without altering the roof line, often without planning permission. Our process starts with a site visit. We measure up, assess the structure, and walk you through what's possible for your specific property. We then handle architectural drawings, planning applications and building regulations submissions — there's no need to appoint a separate architect or agent. Once approved, our own team carries out the structural steelwork, carpentry, insulation, plumbing and NICEIC-certified electrics. We source materials through D.J. Redman, one of the South's leading builders' merchants based right here in Worthing, which keeps material costs competitive. Samuels has been doing this in Worthing and the surrounding areas of West Sussex for over 70 years. That means we know local planning officers, we understand the building stock, and we've earned a reputation that is built on word of mouth. Most of our work comes from recommendations — and that's the way we like it.

Family-run since the fifties. Word-of-mouth has kept us going.
What's Included
  • Dormer, hip-to-gable, mansard & Velux conversions
  • All planning applications and building regs handled
  • Structural steelwork and carpentry by our own team
  • NICEIC-certified electrics and Gas Safe plumbing
  • En-suite bathrooms and bespoke storage
  • Typical completion in 6–10 weeks
Budget Guide
Typically £25,000–£65,000 depending on type and specification
Frequently Asked Questions

Common Questions About Loft Conversions

Most loft conversions fall under permitted development rights, meaning no planning application is needed. However, if your property is in a conservation area, if you want to extend above the existing roof ridge, or if you live in a flat or maisonette, you may need full planning permission. We check this at the initial consultation and handle all applications if required.

A typical loft conversion takes between 6 and 10 weeks from start to completion, depending on the type and complexity. A Velux conversion is usually quicker (around 6 weeks), while a dormer or hip-to-gable conversion typically takes 8-10 weeks. We provide a clear timeline before work begins.

Costs vary depending on the type of conversion and your specifications. A Velux conversion is the most affordable option, while dormer and hip-to-gable conversions cost more due to the additional structural work. We provide a detailed, transparent quote after our initial site visit — no hidden costs.

No. Most of the work happens from the scaffolding outside and within the loft itself. There will be some disruption when we break through for the staircase and connect services, but most families stay in their homes throughout the entire project.

The four main types are: Velux (roof windows only, no structural changes), dormer (a box-shaped extension to the roof slope), hip-to-gable (extending the sloping hip to a vertical wall), and mansard (a near-vertical rear wall with flat top). We will advise which suits your property at the consultation.

Take the Next Step

Ready to discuss your loft conversions?

Get in touch today for a quote. We cover Worthing and all of West Sussex.

01903 239076