London Renovation & Building Contractors
From period kitchen renovations to listed building extensions, we bring 15+ years of London building expertise to every project — managing everything from planning to completion.
Islington · Kitchen renovation · 2024
A Papillon kitchen renovation is built around how you actually live. From open-plan layouts in Victorian terraces to full galley redesigns in period flats, we handle every trade in-house — no subcontractor delays, no surprises.
Wandsworth · Bathroom renovation · 2024
From en-suite wet rooms to full principal bathroom transformations, we combine skilled tiling, plumbing, and joinery under one contract. Trusted by London homeowners across Wandsworth, Notting Hill, Lambeth, and beyond.
Notting Hill · Rear extension · 2023
We design and build single and double-storey extensions throughout London, including rear, side, and wrap-around configurations. We manage planning applications, structural engineering, and party wall matters — so you don't have to.
South Kensington · Dormer loft conversion · 2024
Turn unused roof space into a beautiful bedroom, home office, or en-suite. We specialise in Velux, dormer, hip-to-gable, and mansard conversions — the full spectrum of London loft types across terraced, semi-detached, and detached homes.
Kensington · Grade II listed renovation · 2023
We are one of a small number of London contractors with deep experience in grade II listed and conservation area renovations. Where other builders say no, we know how to work within planning constraints — maintaining character while delivering genuinely modern living standards.
Chelsea · Basement conversion · 2024
London's most valuable square footage is often beneath your feet. We handle full basement dig-outs, structural underpinning, tanking, and fit-out — transforming unused cellars into gyms, cinema rooms, guest suites, or entirely new living floors.
Lambeth · Flat roof replacement · 2024
Whether you need a full pitched re-roof, a flat roof replacement on a rear addition, or a new roof lantern for a kitchen extension — our roofing team works across all London property types, including Victorian and Edwardian terraces.
Chandelier & Structural Work
Load-bearing wall removal, steel beam installation, and structural underpinning require builders confident enough to take full responsibility. We work with structural engineers and provide all calculations, certificates, and building control sign-off.
Our process
What our clients say
"We'd had three builders turn down our Kensington listed building extension. Papillon said yes — and delivered exactly what the conservation officer approved. Remarkable work."
"Our Victorian terrace in Notting Hill needed a complete rear extension and kitchen overhaul. Papillon handled planning, the party wall, and every trade. Finished on time, on budget."
"The basement conversion added an entire floor to our home. Papillon managed the underpinning, tanking, and fit-out seamlessly. Our house value went up significantly."
London coverage
We work across all London boroughs and the surrounding home counties, including Islington, Hackney, Camden, Wandsworth, Lambeth, Southwark, Kensington & Chelsea, Hammersmith & Fulham, Tower Hamlets, Lewisham, Greenwich and beyond. Not sure if we cover your area? Get in touch — we almost certainly do.
Tell us what you have in mind. We'll visit, assess, and give you a detailed quote within 5 working days — no obligation.
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