Extensions · Conversions · Refurbishments
Gavett delivers exacting residential building services across London. We partner with architects and homeowners to deliver high-quality structural work.
Building services for London homes
From rear extensions and structural openings to full-house refurbishments, we manage residential construction projects with structural clarity and architectural care.
Extensions
Rear, side-return, and wraparound extensions engineered to expand ground-floor living space while maintaining existing brickwork character.
Loft conversions
Dormer, mansard, and hip-to-gable conversions tailored to roof structures across Victorian and Edwardian terraced houses.
Basement conversions
Sub-surface excavation, underpinning, and waterproofing to establish quiet, habitable spaces beneath existing footprints.
Refurbishments & renovations
Complete whole-house renovations coordinating structural repairs, bespoke interior joinery, and updated mechanical services.
Structural alterations
Load-bearing wall removals, steel beam insertions, and chimney breast removals delivered with exacting engineering oversight.
Portfolio Showcase
Selected residential works across London
Principal contracting on complex extensions, conversions, and structural renovations for private homeowners and architect-led teams.
Canonbury Victorian Villa
Islington N1Lower ground floor excavation, structural steel frame installation, and floor-to-ceiling flush architectural glazing.
Clapham Common Mansard
Clapham SW4Double mansard roof alteration with zinc cladding, bespoke timber staircase insertion, and reconfigured load-bearing partitions.
Belsize Park Garden Apartment
Belsize Park NW3Retrofit basement waterproof tanking, reinforced concrete underpinning, and lightwell excavation with structural walk-on glass.
Dulwich Village Edwardian Home
Dulwich SE21Reclaimed London stock brickwork integration, open-plan structural alterations, and continuous microcement flooring.
For architects & professionals
Principal contractor services for architect-led residential schemes
We partner with architects, structural engineers, and contract administrators across London to execute complex structural alterations, extensions, and whole-house refurbishments to exact specification. We provide clear programmes, proactive site management, and dependable cost reporting from pre-tender through to handover.