Knowledge Centre
In-depth articles, cost guides, planning advice and project inspiration — written by our specialist team. New guides published every week.
Most loft conversions are funded by remortgaging to release equity or a secured home improvement loan. Here's how each option works and which is right for your situation.
Loft conversion insulation must achieve a U-value of 0.18 W/m²K under Part L. Here's what that means in practice, which insulation type to use, and what inspectors check.
Converting a flat's loft is possible but legally complex — you need freeholder consent, a licence to alter, and planning permission. Here's when it works and when it doesn't.
A Velux (roof light) conversion is the most affordable type, starting from £15,000, and rarely needs planning permission. Here's everything you need to know.
The practical minimum for a habitable loft room is 2.2m at the ridge. Here's how to measure your loft, what to do if headroom is marginal, and how a dormer can solve it.
Most terraced and semi-detached loft conversions require a party wall agreement. Here's when it applies, what the process involves, and what it costs.
Velux conversions take 4–6 weeks; dormer conversions 6–10 weeks; mansard conversions 10–14 weeks. Here's the full week-by-week build timeline and what causes delays.
Loft conversions usually add more value per pound than rear extensions. We compare both on cost, return, planning risk, and disruption for your London home.
Building regulations approval is required for every loft conversion in the UK. Here's what inspectors check — from structural calculations to fire escape routes and staircase standards.
Got a hipped roof? We explain hip-to-gable versus rear dormer conversions in plain English — and why combining both gives you the most usable space.
A loft conversion adds 10–25% to your home's value in the UK. Here's which types deliver the best return, the London areas with highest uplift, and what estate agents actually say.
Most loft conversions fall under Permitted Development and need no planning permission. Here's when you do need it, plus conservation areas and Article 4.
Dormer or mansard? We compare the two most popular full-height loft conversions on space, planning, and cost — and which one suits your property.
London loft conversions run from £15,000 for a Velux to £35,000+ for a mansard. Here's the full 2026 cost breakdown and what drives your final price.
Our editorial calendar — new guides go live on the dates below.
An en-suite loft conversion costs £35,000–£55,000 in London and adds 18–23% to your property's value. Here's what's involved, how much space you need, and design options.
The key questions to ask any loft conversion company before signing: Is the price fixed? Who handles building regs? What warranty do you provide? Red flags to watch for.
If your loft conversion planning application is refused, you can appeal, resubmit with amendments, or redesign for Permitted Development. Here's how each route works.
Victorian terraces are ideal for loft conversions. A rear dormer is almost always the right choice — £28,000–£48,000 and usually Permitted Development.
Converting your loft into a home office costs £15,000–£35,000 and adds 10–15% to your property's value. Here's how to design it for all-day comfort and future flexibility.
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